Witold A. Krzymień - Publications and Patents
(since 1989)

 

1. Articles in refereed archival journals.

1.         B. Banerjee, R. C. Elliott, W. A. Krzymień and I. Maljević, “Improved coverage of massive MIMO HetNets modeled using stochastic geometry techniques”, IEEE Open Journal of Vehicular Technology, Early Access, DOI: 10.1109/OJVT.2024.3517580.

2.         B. Banerjee, R. C. Elliott, W. A. Krzymień and M. Medra, “Machine-learning-aided TDD massive MIMO downlink transmission for high-mobility multi-antenna users with partial uplink channel state information”, IEEE Transactions on Wireless Communications, vol. 24,
no. 1, January 2025, pp. 101-117, DOI: 10.1109/TWC.2024.3485128.

3.         B. Banerjee, R. C. Elliott, W. A. Krzymień and M. Medra, “Hybrid beamforming for mmWave massive MIMO systems using conditional generative adversarial networks”, IEEE Transactions on Vehicular Technology, vol. 73, no. 10, October 2024, pp. 15803-15808,
DOI: 10.1109/TVT.2024.3409192.

4.         R.C. Elliott and W.A. Krzymień, “Corrections, improvements, and comments on some Gradshteyn and Ryzhik integrals”, SCIENTIA, Series A: Mathematical Sciences, vol. 34 (2024), pp. 5-22.

5.         M. Ataeeshojai, R.C. Elliott and W.A. Krzymień, C. Tellambura and I. Maljević, “Symbiotic backscatter communication underlying a cell‐free massive MIMO system”, IEEE Internet of Things Journal, vol. 10, no. 19, 1st October 2023, pp. 16758-16777.

6.         F. Kasem, K. Rambabu, A.K. Iyer and W.A. Krzymień, “A reduced-complexity load-modulated MIMO transmitter readily scalable in 5G massive MIMO transmitters”, IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 70, no. 8, pp. 2849-2853, August 2023.

7.         B. Banerjee, R. C. Elliott, W. A. Krzymień and M. Medra, “Access point clustering in cell-free massive MIMO using conventional and federated multi-agent reinforcement learning,” IEEE Transactions on Machine Learning in Communications and Networking, vol. 1,
pp. 107-123, 2023.

8.         B. Banerjee, R.C. Elliott, W.A. Krzymień and H. Farmanbar, “Downlink channel estimation for FDD massive MIMO using conditional generative adversarial networks”, IEEE Transactions on Wireless Communications, vol. 22, no. 1, January 2023, pp. 122-137.

9.         M. Ataeeshojai, R.C. Elliott, W.A. Krzymień, C. Tellambura and I. Maljević, “Iterative matrix inversion methods for precoding in cell‐free massive MIMO systems”, IEEE Transactions on Vehicular Technology, vol. 71, no. 11, November 2022, pp. 11972-11987.

10.     F. Kasem, R. Winter, R. Feghhi, K. Rambabu and W. A. Krzymień, "Design of a low-cost low-profile energy efficient 64-QAM load modulator", IEEE Transactions on Microwave Theory and Techniques, vol. 70, no. 4, April 2022, pp. 2246-2257.

11.     M. Ataeeshojai, R.C. Elliott, W.A. Krzymień, C. Tellambura and J. Melzer, “Energy‐efficient resource allocation in single‐RF load‐modulated massive MIMO HetNets”, IEEE Open Journal of the Communications Society, vol. 1, pp. 1738-1764, 2020.

12.     M. Soleimani, R.C. Elliott, W.A. Krzymień, J. Melzer and P. Mousavi, "Hybrid beamforming for mmWave massive MIMO systems employing DFT-assisted user clustering", IEEE Transactions on Vehicular Technology, vol. 69, no. 10, October 2020, pp. 11646-11658.

13.     C. Wang, R.C. Elliott, D. Feng, W.A. Krzymień, S. Zhang and J. Melzer, "A framework for MEC-enhanced small-cell HetNet with massive MIMO", IEEE Wireless Communications Magazine, vol. 27, no. 4, August 2020, pp. 64-72.

14.     M. Soleimani, M. Mazrouei-Sebdani, R.C. Elliott, W.A. Krzymień and J. Melzer, "Simplified user grouping algorithm for massive MIMO on sparse beam-space channels", IEICE Transactions on Communications, vol. E102-B, no. 3, March 2019, pp.623-631.

15.     C. Chen, R.C. Elliott, W.A. Krzymień and J. Melzer, "Modeling of cellular networks using stationary and nonstationary point processes", IEEE Access, vol. 6, September 2018, pp. 47144-47162 .

16.     P. Herath, W.A. Krzymień and C. Tellambura, "Coverage probability analysis of three uplink power control schemes: Stochastic geometry approach", EURASIP Journal on Wireless Communications and Networking, 2018:141 (7 June 2018), pp. 1-14, doi: 10.1186/s13638-018-1120-7.

17.     H. Purmehdi, R.C. Elliott, W.A. Krzymień, J. Melzer, "Rotating cluster mechanism for coordinated heterogeneous MIMO cellular networks", EURASIP Journal on Wireless Communications and Networking, 2018:59 (14 March 2018), pp. 1-20, doi: 10.1186/s13638-018-1061-1.

18.     C. Chen, R.C. Elliott and W.A. Krzymień, "Empirical distribution of nearest-transmitter distance in wireless networks modeled by Matern hard core point processes", IEEE Transactions on Vehicular Technology, vol. 67, no. 2, February 2018, pp. 1740-1749 (to see the paper with the typo in Fig 7 corrected, please click: https://drive.google.com/file/d/1MYgkwY_k42pU24kp5Y9GXB3O6SzU-GzQ/view?usp=sharing).

19.     M. Soleimani, M. Mazrouei-Sebdani, R. C. Elliott,W. A. Krzymień and J. Melzer, "Robust precoder design for massive MIMO with peak total power constrained single-RF-chain transmitters", IET Communications, vol. 11, no. 17, 30 November 2017, pp. 2667-2672.

20.     P. Herath, W.A. Krzymień and C. Tellambura, "Coverage and rate analysis for limited information cell association in stochastic-layout cellular networks", IEEE Transactions on Vehicular Technology, vol. 65, no. 9, September 2016, pp. 6962-6971.

21.     H. Purmehdi, R.C. Elliott and W.A. Krzymień, "Reduced-complexity user scheduling algorithms for coordinated heterogeneous MIMO networks", IEEE Transactions on Vehicular Technology, vol. 65, no. 8, August 2016, pp. 6184-6203.

22.     M. Mazrouei-Sebdani, W.A. Krzymień and J. Melzer, "Massive MIMO with non-linear precoding: large-system analysis", IEEE Transactions on Vehicular Technology, vol. 65, no. 4, April 2016, pp. 2815-2820.

23.     G.O. Okeke, W.A. Krzymień, Y. Jing and J. Melzer, "A novel low-complexity joint user-relay selection and association for multi-user multi-relay MIMO uplink", IEEE Wireless Communications Letters, vol. 4, no. 3, June 2015, pp. 309-312.

24.     S. Sigdel and W.A. Krzymień, "Low complexity user scheduling, ordering and transmit covariance matrix optimization algorithms for successive zero-forcing precoding", Wireless Personal Communications - An International Journal (Springer), vol. 75, no. 4, April 2014, pp. 2467-2484.

25.     M. Mazrouei-Sebdani and W.A. Krzymień, "On MMSE vector-perturbation precoding for MIMO broadcast channels with per-antenna-group power constraints", IEEE Transactions on Signal Processing, vol. 61, no. 15, August 2013, pp. 3745-3751.

26.     M. Eslami, R.C. Elliott, W.A. Krzymień, M. Al-Shalash, "Location-assisted clustering and scheduling for coordinated homogeneous and heterogeneous cellular networks", Transactions on Emerging Telecommunications Technologies (ETT), Special Issue: Multi-Carrier Transmission, LTE & LTE-Advanced, vol. 24, no. 1, January 2013, pp. 84-101.

27.     G.O. Okeke, W.A. Krzymień, Y. Jing, "Beamforming in non-regenerative MIMO broadcast relay networks", IEEE Transactions on Signal Processing, vol. 60, no. 12, December 2012, pp. 6641-6654.

28.     M. Mazrouei-Sebdani and W.A. Krzymień, "Vector perturbation precoding for network MIMO: sum rate, fair user scheduling and impact of backhaul delay", IEEE Transactions on Vehicular Technology, vol. 61, no. 9, November 2012, pp. 3946-3957.

29.     R.C. Elliott, S. Sigdel and W.A. Krzymień, "Low complexity greedy, genetic, and hybrid user scheduling algorithms for multiuser MIMO systems with successive zero-forcing", Transactions on Emerging Telecommunications Technologies (ETT), vol. 23, no. 7, November 2012, pp. 604-617.

30.     S. Kaviani, O. Simeone, W.A. Krzymień and S. Shamai (Shitz), "Linear precoding and equalization for network MIMO with partial cooperation", IEEE Transactions on Vehicular Technology, vol. 61, no. 5, June 2012, pp. 2083-2096.

31.     S.D. Muruganathan, W.A. Krzymień and A.B. Sesay, "A null-subcarrier-aided reference symbol mapping scheme for 3GPP LTE downlink in high-mobility scenarios", IEEE Transactions on Vehicular Technology, vol. 61, no. 2, Feb. 2012, pp. 624-638.

32.     M. Eslami, W.A. Krzymień, "Net throughput maximization of per-chunk user scheduling for MIMO-OFDM downlink", IEEE Transactions on Vehicular Technology, vol. 60, no. 9, Nov. 2011, pp. 4338-4348.

33.     R.C. Elliott and W.A. Krzymień, "Improved and weighted sum rate maximization for successive zero-forcing in multiuser MIMO systems", EURASIP Journal on Wireless Communications and Networking, Special Issue on Recent Advances in Multiuser MIMO Systems, 2011:133 (14 October 2011), pp. 1-16, doi:10.1186/1687-1499-2011-133.

34.     K.R. Jacobson, W.A. Krzymień, "Multihop relaying and multiple antenna techniques - performance trade-offs in cellular systems", EURASIP Journal on Wireless Communications and Networking, 2011:65 (18 August 2011), pp. 1-19, doi:10.1186/1687-1499-2011-65.

35.     R.C. Elliott and W.A. Krzymień, "On the convergence of genetic scheduling algorithms for downlink transmission in multi-user MIMO systems", Wireless Personal Communications - An International Journal (Springer), vol. 58, no. 3, June (I) 2011, pp. 469-481.

36.     R. C. Elliott and W. A. Krzymień, "Correction to ′Downlink scheduling via genetic algorithms for multiuser single-carrier and multicarrier MIMO systems with dirty paper coding′", IEEE Transactions on Vehicular Technology, vol. 60, no. 4, May 2011, pp. 1977-1979.

37.     S. Kaviani, W.A. Krzymień, "Optimal multiuser zero-forcing with per-antenna power constraints for network MIMO coordination", EURASIP Journal on Wireless Communications and Networking, Special Issue on Recent Advances in Multiuser MIMO Systems, vol. 2011, article ID 190461 (10 March 2011), 12 pages, doi:10.1155/2011/190461.

38.     Y. Fu, W.A. Krzymień, C. Tellambura, "Covariance precoding schemes for MIMO-OFDM over transmit-antenna and path-correlated channels", European Transactions on Telecommunications, vol. 21, issue 7, pp. 611-623, November 2010.

39.     A. Talebi, W.A. Krzymień, "Cooperative MIMO multiple-relay system with optimized beamforming and power allocation", IET Communications, vol. 4, issue 14, pp. 1677-1686, 24 September 2010.

40.     C. Bai, W.A. Krzymień, I.J. Fair, "Hybrid-ARQ for layered space time MIMO systems with channel state information only at the receiver", IET Communications, vol. 4, issue 14, pp. 1765-1773, 24 September 2010.

41.     M. Eslami, W.A. Krzymień, "Efficient transmission schemes for multiuser MIMO downlink with linear receivers and partial channel state information", EURASIP Journal on Wireless Communications and Networking, vol. 2010, article ID 572675, 12 pages.

42.     M. Eslami, W.A. Krzymień, "An efficient low-complexity detector for spatially multiplexed MC-CDM", IEEE Transactions on Signal Processing, vol. 58, no. 8, pp. 4286-4297, August 2010.

43.     S.D. Muruganathan, A.B. Sesay, and W.A. Krzymień, "Analytical query response time evaluation for a two-level clustering hierarchy based wireless sensor network routing protocol", IEEE Communications Letters, vol. 14, no. 5, pp. 486-488, May 2010.

44.     Z. Chen, T. Brandon, D.G. Elliott, S. Bates, W.A. Krzymień, and B.F. Cockburn, "Jointly designed architecture-aware LDPC convolutional codes and high-throughput parallel encoders/decoders", IEEE Trans. on Circuits and Systems - Part I: Regular Papers, vol. 57, no. 4, April 2010, pp. 836-849.

45.     B. Mielczarek, W.A. Krzymień, "Comparison of partial CSI encoding methods in multi-user MIMO systems", Wireless Personal Communications - An International Journal (Springer), vol. 52, no. 1, January 2010, pp. 177-193.

46.     S. Sigdel, W. A. Krzymień, "Antenna and user subset selection in downlink multiuser orthogonal space-division multiplexing", in ibid, pp. 227-240.

47.     K.R. Jacobson, W.A. Krzymień, "System design and throughput analysis for multi-hop relaying in cellular systems", IEEE Transactions on Vehicular Technology, vol. 58, no. 8, October 2009, pp. 4514-4528.

48.     R. C. Elliott and W. A. Krzymień, "Downlink scheduling via genetic algorithms for multiuser single-carrier and multicarrier MIMO systems with dirty paper coding," IEEE Transactions on Vehicular Technology, vol. 58, no. 7, September 2009, pp. 3247-3262.

49.     Y. Fu, W.A. Krzymień, C. Tellambura, "Precoding for orthogonal space-time block-coded OFDM downlink: mean or covariance feedback? ", IEEE Transactions on Vehicular Technology, vol. 58, no. 7, September 2009, pp. 3263-3270.

50.     M. Eslami, W.A. Krzymień, "On the performance of spatially multiplexed MC-CDM with zero-forcing unified successive interference cancellation detection", IET Communications, vol. 3, no. 8, August 2009, pp. 1410-1419.

51.     S. Sigdel, W.A. Krzymień, "Simplified fair scheduling and antenna selection algorithms for multiuser MIMO orthogonal space division multiplexing downlink", IEEE Trans. on Vehicular Technology, vol. 58, no. 3, March 2009, pp. 1329-1344.

52.     G. Li, I.J. Fair, W.A. Krzymień, "Density evolution for nonbinary LDPC codes under Gaussian approximation", IEEE Transactions on Information Theory, vol. 55, no. 3, March 2009, pp. 997-1015.

53.     B.C. Lim, W.A. Krzymień, C. Schlegel, "Efficient sum rate maximization and resource allocation in block diagonalized space-division multiplexing", IEEE Transactions on Vehicular Technology, vol. 58, no. 1, January 2009, pp. 478-483.

54.     Y. Fu, C. Tellambura, W.A. Krzymień, "Limited-feedback precoding for closed-loop multiple-user MIMO OFDM systems with frequency offsets", IEEE Transactions on Wireless Communications, vol. 7, no. 11, Nov. 2008, pp. 4155-4165.

55.     M. Elkashlan, I.B. Collings, Z. Chen, W.A. Krzymień, "Decentralized dynamic allocation of subchannels in multiple access networks", IEEE Communications Letters, vol.12, no. 10, October 2008, pp. 761-763.

56.     M. Elkashlan, Z. Chen, I.B. Collings, W.A. Krzymień, "Selection based resource allocation for decentralized multi-user communications", Physical Communication (Elsevier), vol. 1, no. 3, September 2008, pp. 194-208.

57.     J. Liu, W.A. Krzymień, "A novel nonlinear joint transmitter-receiver processing algorithm for the downlink of multi-user MIMO systems", IEEE Transactions on Vehicular Technology, vol. 57, no. 4, July 2008, pp. 2189-2204.

58.     C. Bai, B. Mielczarek, I.J. Fair, W.A. Krzymień, "Sub-block recovery scheme for iterative decoding of turbo codes with the sub-block structure", IEICE (Japan) Transactions on Communications, vol. E91-B, no. 5, May 2008, pp. 1375-1386.

59.     B. Mielczarek, W.A. Krzymień, "Adaptive hybrid ARQ systems with BCJR decoding", IEEE Transactions on Vehicular Technology, vol. 57, no. 3, May 2008, pp. 1606 - 1619.

60.     G.G. Messier, W.A. Krzymień, "A Gaussian symbol-level model for CDMA forward link intracell interference", IEEE Transactions on Vehicular Technology, vol. 56, no. 6, part 2, Nov. 2007, pp. 3927 - 3931.

61.     Y. Fu, W.A. Krzymień, C. Tellambura, "A technique for multiuser and intercarrier interference reduction in multiple-antenna multiuser OFDM downlink", IEEE Trans. on Wireless Communications, vol. 6, no. 10, October 2007, pp. 3493 - 3497.

62.     D.J. Mazzarese, W.A. Krzymień, "Scheduling algorithms and throughput maximization for the downlink of packet-data cellular systems with multiple antennas at the base station", Wireless Personal Communications - An International Journal (Springer), vol. 43, no. 2, October 2007, pp. 215-260.

63.     S. Sigdel, W.A. Krzymień, "Performance evaluation of spatially multiplexed MIMO systems with subset antenna transmission in interference limited environments", ibid., pp. 623-644.

64.     J. Liu, W.A. Krzymień, "Improved Tomlinson-Harashima precoding for the downlink of multi-user MIMO systems", Can. J. of Electrical & Computer Engineering, vol. 32, no. 3, Summer 2007, pp. 133-144.

65.     J. Liu, W.A. Krzymień, "A novel nonlinear precoding algorithm for the downlink of multiple antenna multi-user systems", Wireless Personal Communications - An International Journal (Springer), vol. 41, no. 2, April 2007, pp. 207-223.

66.  R. Novak, W.A. Krzymień, "Diversity combining options and low-complexity MMSE equalization for spread spectrum OFDM systems in frequency selective fading channels", Wireless Personal Communications - An International Journal (Springer), vol. 41, no. 2, April 2007, pp. 281-300.

67.     C. Bai, B. Mielczarek, W.A. Krzymień, I.J. Fair, "Improved analysis of list decoding and its application to convolutional codes and turbo codes", IEEE Trans. Information Theory, vol. 53, no. 2, February 2007, pp. 615-627.

68.     Y. Fu, C. Tellambura, W.A. Krzymień, "Transmitter precoding for ICI reduction in closed-loop MIMO OFDM systems", IEEE Trans. Veh. Technol., vol. 56, no.1, January 2007, pp.115-125.

69.     G.G. Messier, W.A. Krzymień, "Performance of turbo coding with improved interference estimation on the CDMA space time transmit diversity forward link", IEEE Transactions on Vehicular Technology, vol. 55, no. 3, May 2006, pp.1074-1079.

70.     G. Li, I.J. Fair, W.A. Krzymień, "Low-density parity-check codes for space-time wireless transmission", IEEE Trans. on Wireless Commun., vol. 5, no. 2, February 2006, pp.312-322.

71.     G.G. Messier, W.A. Krzymień, "Improved channel decoding for the CDMA forward link chip-level LMMSE receiver", IEEE Trans. Veh. Technol., vol.55, no.1, January 2006, pp. 405 - 410.

72.     G.G. Messier, W.A. Krzymień, "Improving channel decoder performance on the CDMA forward link", IEEE Trans. on Wireless Commun., vol. 4, no. 3, May 2005, pp.1064 - 1072.

73.     A.C.K. Soong, W.A. Krzymień, Y.C. Yoon, "CDMA2000 evolution: 1x EV-DV", Guest Editorial for the Special Feature Topic, IEEE Communications Magazine, vol. 43, no. 4, April 2005, pp. 34-35.

74.     M. V. Burnashev, C. B. Schlegel, W. A. Krzymień, and Z. Shi, "Analysis of the dynamics of iterative interference cancellation in iterative decoding", Problems of Information Transmission, vol. 40, no. 4, October 2004, pp. 297-317.

75.     R. Novak, W.A. Krzymień, "Efficient packet data service in a spread spectrum OFDM cellular system with 2-dimensional radio resource allocation", 4th Special Issue on Multi-Carrier Spread Spectrum of the European Transactions on Telecommunications, vol. 15, no. 3, May/June 2004, pp. 185-199.

76.     R.C. Elliott, W.A. Krzymień, "Scheduling algorithms for high throughput packet data service in cellular radio systems", Can. J. of Electrical & Computer Engineering, Special Issue on Advances in Wireless Communications and Networking, vol. 29, no. 1/2, January/April 2004, pp. 117-127.

77.     P. Goud Jr., C. Schlegel, W.A. Krzymień, R. Hang, "Multiple antenna communication systems - an emerging technology", Can. J. of Electrical & Computer Engineering, Special Issue on Advances in Wireless Communications and Networking, vol. 29, no. 1/2, January/April 2004, pp. 51-59.

78.     R. Hang, W.A. Krzymień, C.L. Despins, "Improved MAC protocol for reverse link packet data transmission in wideband DS-CDMA", IEEE Transactions on Wireless Communications, vol. 2, no. 1, January 2003, pp. 162-174.

79.     S. Sun, W.A. Krzymień, Q. Shen, B. Darian, "Rapid access protocols for discontinuous transmission in DS-CDMA systems", Wireless Personal Communications - An International Journal (Springer), vol. 21, no. 2, May 2002, pp. 201-218.

80.     S. Sun, W.A. Krzymień, "Hybrid ARQ and optimal signal-to-interference ratio assignment for high-quality data transmission in DS-CDMA", European Transactions on Telecommunications, vol.12, no 1, January/February 2001, pp. 19-29.

81.     S. Kaiser, W.A. Krzymień, K. Fazel, "SS-MC-MA systems with pilot symbol aided channel estimation in the asynchronous uplink", European Transactions on Telecommunications (2nd Special Issue on Multi-Carrier Spread Spectrum), vol. 11, no. 6, November-December 2000, pp. 605-610.

82.     S. Kaiser, W. A. Krzymień, "Performance effects of the uplink asynchronism in a spread spectrum multi-carrier multiple access system", European Transactions on Telecommunications (Special Issue on Multi-Carrier Spread Spectrum), vol. 10, no. 4, July/August 1999, pp. 399-406.

83.     L. Tomba, W.A. Krzymień, "An analysis of the effect of chip timing jitter in MC-CDMA systems", IEEE Transactions on Vehicular Technology, vol. 48, no. 6, November 1999, pp. 1889-1898.

84.     L. Tomba, W.A. Krzymień, "Sensitivity of the MC-CDMA access scheme to carrier phase noise and frequency offset", IEEE Transactions on Vehicular Technology, vol. 48, no. 5, September 1999, pp. 1657-1665.

85.     Q. Shen, W.A. Krzymień, "Optimum power assignment for maximum throughput in CDMA personal communication systems with integrated voice/data traffic", Wireless Personal Communications - An International Journal (Springer), vol. 8, no. 3, December 1998, pp. 277-289.

86.     D. Liu, C.L. Despins, W.A. Krzymień, "Low-complexity performance evaluation of binary and quaternary DS-SSMA over Rician fading channels via the characteristic function method", Special Issue on CDMA for Universal Personal Communications Systems of the Wireless Personal Communications - An International Journal, vol. 7, no. 2/3, August 1998, pp. 257-273.

87.     A.C.K. Soong, W.A. Krzymień, "Reference symbol assisted multi-stage successive interference cancellation for CDMA wireless communications: Robustness to parameter imperfections with biphase and quadriphase spreading", Wireless Personal Communications - An International Journal (Springer), vol. 7, no. 1, May 1998, pp. 1-23.

88.     L. Tomba, W.A. Krzymień, "Downlink detection schemes for MC-CDMA systems in indoor environments", Special Issue on Personal Communications, IEICE (Japan) Transactions on Communications, vol. E79-B, no. 9, September 1996, pp. 1351-1360.

89.     A.C.K. Soong, W.A. Krzymień, "A novel CDMA multiuser interference cancelling receiver with reference symbol aided estimation of channel parameters", Special Issue on Code Division Multiple Access Networks III, IEEE Journal on Selected Areas in Communications, vol. 14, no. 8, October 1996, pp. 1536-1547.

90.     W.A. Krzymień, A. Jalali, P. Mermelstein, "Rapid acquisition algorithms for synchronization of bursty transmissions in CDMA microcellular and personal wireless systems", Special Issue on Wireless Local Communications I, IEEE Journal on Selected Areas in Communications, vol. 14, no. 3, April 1996, pp. 570-579.

91.     G.J. Erker, D.E. Dodds, W.A. Krzymień, "ISDN loop extension using a mid-span amplifier", Intl. J. of Communication Systems (John Wiley & Sons), vol. 8, no. 3, May-June 1995, pp. 219-224.

92.     W.D. Grover, W.A. Krzymień, J.C. Chin, "Strategies for management of connection-oriented data sessions employing the idle times in cellular telephony", IEEE Transactions on Vehicular Technology, vol. 44, no. 2, May 1995, pp. 244-252.

93.     M.Y. Cheung, W.D. Grover, W.A. Krzymień, "Combined framing and error correction coding for the DS3 signal format", IEEE Transactions on Communications, vol. 43, no. 2/3/4, Feb./March/April 1995, Part III, pp. 1365-1374.

94.     W. Zhuang, W.A. Krzymień, P.A. Goud, "Trellis-coded CPFSK and soft decision-feedback equalization for micro-cellular wireless applications", Wireless Personal Communications - An International Journal (Springer), vol. 1, no. 4, 1994/1995, pp. 271-285.

95.     W. Zhuang, W.A. Krzymień, P.A. Goud, "Adaptive channel precoding for personal communications", Electronics Letters, vol. 30, no. 19, 15 Sept. 1994, pp. 1570 - 1571.

96.     R.G. Kusyk, W.A. Krzymień, T.E. Moore, "Analysis of techniques for the reduction of jitter caused by SONET pointer adjustments", IEEE Transactions on Communications, vol. 42, no. 2/3/4, Feb./March/April 1994, Part III, pp. 2036 - 2050.

97.     I.J. Fair, W.A. Krzymień, "Analysis of the self-framing performance of mBnB line codes", Intl. J. of Digital and Analog Communication Systems (Wiley), vol. 6, no. 3, July-September 1993, pp. 127 - 142.

98.     K.P. Benterud, W.A. Krzymień, W.D. Grover, "Quasi-orthogonal subcarrier multiplexing for high capacity optical data links", Canadian Journal of Electrical & Computer Engineering, vol. 18, no. 4, 1993, pp. 159 - 169.

99.     R. Sharma, W.D. Grover, W.A. Krzymień, "Forward-error-control (FEC) - assisted adaptive equalization for digital cellular mobile radio", IEEE Transactions on Vehicular Technology, vol. 42, no. 1, February 1993, pp. 94 - 102.

100. W.A. Krzymień, T.D. Bilodeau, "Performance evaluation study of signal design and equalization options for high-bit-rate digital subscriber line transceivers", Intl. J. of Digital and Analog Communication Systems (Wiley), vol. 5, no. 1, 1992, pp. 15-28.

101. T.D. Bilodeau, W.A. Krzymień, "Simulation study of trellis-coded transceivers for high-bit-rate digital subscriber loops", IEE Proceedings - Part I: Communications, Speech & Vision, vol. 138, no. 6, December 1991, pp. 503-510 (1991/92 A.H. Reeves Premium Award).

102. W.D. Grover, W.A. Krzymień, A. Shen, "Simulation and experimental studies on the concept of a rate-adaptive digital subscriber loop (RA-DSL)", IEEE J. on Selected Areas in Communications, vol. 9, no. 6, August 1991, pp. 941-950.

103. I.J. Fair, W.D. Grover, W.A. Krzymień, R.I. MacDonald, "Guided scrambling: a new line coding technique for high bit rate fiber optic transmission systems", IEEE Transactions on Communications, vol. 39, no. 2, Feb. 1991, pp. 289-297.

104. W.D. Grover, W.A. Krzymień, "A proposal to use the justification bits of a DS-3 stream for signalling", IEEE Transactions on Communications, vol. 38, no. 10, Oct. 1990, pp. 1657-1658.

105. T.E. Moore, R.G. Kusyk, W.A. Krzymień, "Waiting time jitter results for a reduced complexity SONET interface circuit", Electronics Letters, vol. 26, no. 22, 25th Oct. 1990, pp. 1884-1886.

106. R.G. Kusyk, T.E. Moore, W.A. Krzymień, "Spectral analysis of waiting time jitter in the presence of stuff threshold modulation", Electronics Letters, vol. 26, no. 8, 14th April 1990, pp. 526-528.

107. J.J. Brown, W.A. Krzymień, "A modified ISDN network layer protocol suitable for implementation in hardware", INFOR - The Canadian Journal on Information Systems and Operational Research, vol. 27, no. 4, November 1989, pp. 465-473.

108. W.A. Krzymień, "Transmission performance analysis of a new class of line codes for optical fibre systems", IEEE Trans. on Communications, vol. 37, no. 4, April 1989, pp. 402-404.

2. Book chapters.

1. S. Sigdel, W. A. Krzymień, "Simplified channel-aware greedy scheduling and antenna selection algorithms for multiuser MIMO systems employing orthogonal space division multiplexing", Chapter 2 in Advances in Mobile and Wireless Communications. Heidelberg, Germany: Springer 2008, pp. 23 - 51.

3. Papers in refereed conference proceedings.

1.         B. Banerjee, R. C. Elliott, W. A. Krzymień and M. Medra, “Machine learning assisted DL CSI estimation for high-mobility multi-antenna users with partial UL CSI availability in TDD massive MIMO systems,” in Proc. IEEE GLOBECOM 2022 Workshop on Emerging Topics in 6G Communications, Rio de Janeiro, Brazil (hybrid conference), Dec. 2022, pp. 1579-1585.

2.         B. Banerjee, R.C. Elliott, W.A. Krzymień, H. Farmanbar, “Access point clustering in cell‐free massive MIMO using multi‐agent reinforcement learning”, in Proc. 33rd IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 2022), September 2022 (held virtually), pp. 794-800.

3.         B. Banerjee, R.C. Elliott, W.A. Krzymień, H. Farmanbar, “Towards FDD massive MIMO: Downlink channel covariance matrix estimation using conditional generative adversarial networks”, in Proc. 32nd IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 2021), Helsinki, Finland (held virtually), September 2021, pp. 940-946; PIMRC 2021 Best Student Paper Award.

4.         B. Banerjee, R.C. Elliott, W.A. Krzymień, J. Melzer, “Correlated placement of small cell base stations: a coverage enriched HetNet with massive MIMO”, in Proc. 91st IEEE Vehicular Technology Conference (VTC 2020-Spring), Antwerp, Belgium (held virtually), May 2020, 6 IEEE-format pages.

5.         M. Soleimani, R.C. Elliott, W. A. Krzymień, J. Melzer, P. Mousavi, "Hybrid beamforming and DFT-based channel estimation for millimeter wave MIMO systems", in Proc. 28th IEEE Intl. Symp. on Personal, Indoor & Mobile Radio Comm. (PIMRC 2017), Montreal, Canada, Oct. 2017, 7 IEEE-format pages.

6.         M. Soleimani, M. Mazrouei-Sebdani, W. A. Krzymień, J. Melzer, "A path selection algorithm for sparse massive MIMO channels", in Proc. 50th Asilomar Conference on Signals, Systems and Computers (ASILOMAR 2016), Pacific Grove, CA, USA, Nov. 2016, pp. 208-212.

7.         P. Herath, C. Tellambura, W.A. Krzymień, "Stochastic geometry modeling of cellular uplink power control under composite Rayleigh-lognormal fading", in Proc. 82nd IEEE Vehicular Technology Conference (VTC 2015-Fall), Boston, USA, Sept. 2015.

8.         H. Purmehdi, R.C. Elliott, W.A. Krzymień, J. Melzer, "Effect of cluster rotation speed in coordinated heterogeneous MIMO cellular networks with proportionally fair user scheduling", in Proc. 48th Asilomar Conference on Signals, Systems and Computers (ASILOMAR 2014), Pacific Grove, CA, USA, Nov. 2014, pp. 1816-1820.

9.         P. Herath, W.A. Krzymień, C. Tellambura, "A novel base stations - mobile stations association policy for cellular networks", in Proc. 80th IEEE Vehicular Technology Conference (VTC 2014-Fall), Vancouver, Canada, Sept. 2014, 5 IEEE-format pages.

10.     H. Purmehdi, R.C. Elliott, W.A. Krzymień, J. Melzer, "Rotating clustering with simulated annealing user scheduling for coordinated heterogeneous MIMO cellular networks", in Proc. 2014 IEEE International Conference on Communications (ICC 2014), Sydney, Australia, June 2014, pp. 5304-5309.

11.     G.O. Okeke, W.A. Krzymień, Y. Jing, "Distributed beamforming in multi-cell cooperative MIMO cellular networks with non-regenerative relays: An LTE-Advanced framework", in Proc. IEEE GLOBECOM 2013, Atlanta, USA, Dec. 2013, pp. 4240-4245.

12.     M. Mazrouei-Sebdani, W.A. Krzymień, "Massive MIMO with clustered pilot contamination precoding", in Proc. 47th Asilomar Conference on Signals, Systems and Computers (ASILOMAR 2013), Pacific Grove, CA, USA, Nov. 2013, pp. 1218-1222.

13.     C. Chen, R.C. Elliott, W.A. Krzymień, "Downlink coverage analysis of N-tier heterogeneous cellular networks based on clustered stochastic geometry", in ibid., pp. 1577-1581.

14.     M.M. Misiewicz, R.C. Elliott, K.R. Jacobson, W.A. Krzymień, "Eigenmode scheduling via simulated annealing for multiuser MIMO downlink with successive zero-forcing precoding", in Proc. 10th Intl. Symp. on Wireless Communication Systems, Ilmenau, Germany, August 2013, pp. 552-556.

15.     H. Purmehdi, R.C. Elliott, W.A. Krzymień, "Simulated annealing user scheduling for coordinated heterogeneous MIMO networks", in Proc. 46th Asilomar Conference on Signals, Systems and Computers (ASILOMAR 2012), Pacific Grove, California, USA, Nov. 2012, pp. 1157-1161.

16.     M. Mazrouei-Sebdani, W.A. Krzymień, "On MMSE vector-perturbation precoding for MIMO broadcast channels with per-antenna-group power constraints", in Proc. 2012 IEEE International Conference on Communications (ICC 2012), Ottawa, Canada, June 2012, pp. 6363-6367.

17.     S. Sigdel, W.A. Krzymień, M. Al-Shalash, “Greedy and progressive user scheduling for CoMP wireless networks”, in ibid., pp. 5762-5767.

18.     M. Mazrouei-Sebdani, W.A. Krzymień, “Sum rate of p-sphere encoding for MIMO broadcast channels with reduced peak power”, in Proc. 75th IEEE Vehicular Technology Conference (VTC’12-Spring), Yokohama, Japan, May 2012, 5 IEEE-format pages.

19.     S. Kaviani, W.A. Krzymień, “Robust joint precoder and equalizer design in MIMO communication systems”, in Proc. IEEE 2012 Wireless Communications and Networking Conference (WCNC’12), Paris, France, April 2012, pp. 277-282.

20.     S. Kaviani, O. Simeone, W.A. Krzymień, S. Shamai, “Linear MMSE precoding and equalization for network MIMO with partial cooperation”, in Proc. IEEE GLOBECOM 2011, Houston, USA, Dec. 2011, 6 IEEE-format pages.

21.     G.O. Okeke, Y. Jing, W.A. Krzymień, ” Beamforming in MIMO broadcast relay networks with multiple antenna users”, in Proc. 45th  Asilomar Conference on Signals, Systems and Computers (ASILOMAR 2011), Pacific Grove, California, USA, Nov. 2011, pp. 1222-1226.

22.     M. Eslami, W.A. Krzymień, M. Al-Shalash, “A hybrid mode user-location-aware network MIMO with limited feedback for cellular downlink”, in Proc. 8th International Workshop on Multi-Carrier Systems & Solutions (MC-SS’11), Herrsching, Germany, May 2011, 4 IEEE-format pages.

23.     M. Mazrouei-Sebdani, W.A. Krzymień, “Vector perturbation precoding and user scheduling for network MIMO”, in Proc. 2011 IEEE Wireless Communications and Networking Conference (WCNC’11), Cancun, Mexico, March 2011, pp. 203-208.

24.     S. Kaviani, W.A. Krzymień, “Multi-cell scheduling in network MIMO”, in Proc. IEEE GLOBECOM 2010, Miami, Florida, USA, Dec. 2010, 5 IEEE-format pages.

25.     M. Eslami, W.A. Krzymień, “A limited feedback user location-aware network MIMO coordination scheme for cellular downlink”, in Proc. 21st IEEE Intl. Symp. on Personal, Indoor & Mobile Radio Comm. (PIMRC’10), Towards IMT-Advanced & Beyond Workshop, Istanbul, Turkey, Sept. 2010, pp. 413-418.

26.     S. Sigdel and W.A. Krzymień, “User scheduling for network MIMO systems with successive zero-forcing precoding”, in Proc. 72nd  IEEE Vehicular Technology Conference (VTC’10-Fall), Ottawa, Canada, Sept. 2010, 6 IEEE-format pages.

27.     S.D. Muruganathan, W.A. Krzymień, A.B. Sesay, “Null sub-carrier aided reference symbol mapping for improved channel estimation in 3GPP LTE downlink”, in Proc. 71st IEEE Vehicular Technology Conference (VTC’10-Spring), Taipei, Taiwan, May 2010, 5 IEEE-format pages.

28.     R.C. Elliott, S. Sigdel, W.A. Krzymień, M. Al-Shalash, A.C.K. Soong, “Genetic and greedy user scheduling for multiuser MIMO systems with successive zero-forcing”, in Proc. 5th IEEE Broadband Wireless Access Workshop (co-located with the IEEE GLOBECOM 2009), Honolulu, USA, Nov-Dec 2009, 6 IEEE-format pages.

29.     K.R. Jacobson, W.A. Krzymień, “Cooperative vs. multihop relaying in cellular systems”, in Proc.20th IEEE Intl. Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC’09), Tokyo, Japan, Sept. 2009, pp. 1853-1857.

30.     B. Mielczarek, W.A. Krzymień, “Adaptive CSI prediction in linear multi-user MIMO systems”, in Proc. 70th IEEE Vehicular Technology Conference (VTC’09-Fall), Anchorage, USA, Sept. 2009, 5 IEEE-format pages.

31.     S. Sigdel, R.C. Elliott, W.A. Krzymień, and M. Al-Shalash, “Greedy and genetic user scheduling algorithms for multiuser MIMO systems with block diagonalization”, in ibid., 6 IEEE-format pages.

32.     S. Sigdel and W.A. Krzymień, “Simplified user scheduling and mode selection algorithms for limited CSIT feedback linear precoding for multiuser MIMO systems”, in Proc. IWCMC’09 (MIMO Systems Symposium), June 2009, Leipzig, Germany, pp. 1375-1380.

33.     A. Talebi, W.A. Krzymień, “Multiple-antenna multiple-relay system with precoding for multiuser transmission”, in ibid., pp. 1218-1222.

34.     S. Sigdel and W.A. Krzymień, “Simplified transmit covariance optimization and user ordering algorithm for successive zero-forcing precoding”, in Proc. 10th IEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC’09), June 2009, Perugia, Italy, pp. 235-239.

35.     M. Elkashlan, Z. Chen, I. B. Collings, W.A. Krzymień, “General order selection allocation for decentralized multiple access networks”, in Proc. IEEE International Conference on Communications (ICC’09), Dresden, Germany, June 2009, 5 IEEE-format pages.

36.     M. Eslami, W.A. Krzymień, “Limited-feedback multiuser MIMO-OFDM downlink with per-subcarrier / per-antenna user scheduling and linear receivers”, in Proc. 7th International Workshop on Multi-Carrier Systems & Solutions (MC-SS’09), Herrsching, Germany, May 2009, pp. 269-278.

37.     S. Kaviani, W.A. Krzymień, “On the optimality of multiuser zero-forcing precoding in MIMO broadcast channels”, in Proc. 69th IEEE Vehicular Technology Conference (VTC’09-Spring), Barcelona, Spain, April 2009, 5 IEEE-format pages.

38.     S. Sigdel, W.A. Krzymień, “Efficient user selection and ordering algorithms for successive zero-forcing precoding for multiuser MIMO downlink”, in ibid., 6 IEEE-format pages.

39.     Y. Wang, R.C. Elliott, W.A. Krzymień, Y. Liu, “Coordinated MIMO transmission for a cellular downlink”, in Proc. 2009 IEEE Radio and Wireless Symposium (RWS’09), Jan. 2009, San Diego, USA, pp. 626-629.

40.     K.R. Jacobson, W.A. Krzymień, “Multi-hop relaying and MIMO techniques in cellular systems - throughput achievable on Rayleigh/Ricean channels", in Proc. IEEE Globecom’08, Nov/Dec 2008, New Orleans, USA, 5 IEEE-format pages.

41.     S. Kaviani, W.A. Krzymień, “User selection for multiple-antenna broadcast channel with zero-forcing beamforming", in ibid., 5 IEEE-format pages.

42.     M. Eslami, W.A. Krzymień, “Downlink limited feedback transmission schemes for asymmetric MIMO channels”, in Proc. 68th IEEE Semiannual Vehicular Technology Conference (VTC’08-Fall), Calgary, Canada, Sept. 2008, 5 IEEE-format pages.

43.     R.C. Elliott, W.A. Krzymień, “On the convergence of genetic scheduling algorithms for downlink transmission in multi-user MIMO systems”, in Proc. 11th International Symposium on Wireless Personal Multimedia Communications (WPMC 2008), Lapland, Finland, Sept. 2008, 6 IEEE-format pages.

44.     M. Eslami, W.A. Krzymień, “Efficient transmission technique for MIMO-OFDM broadcast channels with limited feedback”, in Proc. 10th IEEE International Symposium on Spread Spectrum Techniques and Applications (ISSSTA 2008), Bologna, Italy, August 2008, 237-241.

45.     A. Talebi, W.A. Krzymień, “Optimized power allocation for multiple-antenna multiple-relay cooperative communication system”, in ibid., pp. 222-226.

46.     S. Plass, R. Raulefs, …, W.A. Krzymień, Li Ping, “Wireless Hybrid Enhanced Mobile Radio Estimators – WHERE”, in  Proc. ICT Mobile Summit 2008, June 2008, Stockholm, Sweden, 7 pages.

47.     Z. Chen, S. Bates, W.A. Krzymień, “High throughput parallel decoder design for LDPC convolutional codes”, in Proc. IEEE Intl. Conf. on Circuits & Systems for Communications (ICCSC’08), Shanghai, China, May 2008, 35-39.

48.     M. Eslami, W.A. Krzymień, “Scheduling for MIMO broadcast channels with linear receivers and partial channel state information”, in Proc. 67th IEEE Semiannual Vehicular Technology Conference (VTC’08-Spring), Singapore, May 2008, pp. 2467-2471.

49.     B. Mielczarek, W.A. Krzymień, “Vector quantized CSI prediction in linear multi-user MIMO systems”, in ibid., pp. 852-857.

50.     A. Talebi, W.A. Krzymień, “Multiple-antenna multiple-relay cooperative communication system with beamforming”, in ibid., pp. 2350-2354.

51.     B.C. Lim, W.A. Krzymień, C. Schlegel, “Simultaneous feedback reduction and sum rate maximization in block diagonalized space-division multiplexing”, in ibid., pp. 2685-2689.

52.     S. Kaviani, W.A. Krzymień, “Sum rate maximization of MIMO broadcast channels with coordination of base stations”, in Proc. 2008 IEEE Wireless Communications and Networking Conference (WCNC’08), Las Vegas, USA, March/April 2008, pp. 1079-1084 (WCNC’08 Best Paper Award).

53.     M. Elkashlan, I.B. Collings, W.A. Krzymień, “Decentralized dynamic channel allocation in correlated Nakagami fading channels: an order statistics analysis”, in Proc. 2008 Australian Comm. Theory Workshop, Christchurch, New Zealand, 30 Jan – 1 Feb 2008, pp. 125-129.

54.     B. Mielczarek, W.A. Krzymień, “CSI quantization in MIMO systems with temporally correlated channels”, in Proc. 10th Intl. Symp. on Wireless Multimedia Personal Communications (WPMC’07), 3-6 December 2007, Jaipur, India, pp. 228-232.

55.     K.R. Jacobson, W.A. Krzymień, “Multi-hop relaying and multiple antenna techniques – Performance trade-offs in cellular systems”, ibid., pp. 913-917.

56.     S. Kaviani, C. Tellambura, W.A. Krzymień, “On the performance of transmit antenna selection using OSTBCs in Ricean MIMO channels”, in Proc. 2007 Tyrrhenian International Workshop on Digital Wireless Communications, Ischia, Italy, September 2007, pp. 39-50.

57.     S. Sigdel, W.A. Krzymień, “Fair Scheduling and Antenna Selection Algorithms for Multiuser MIMO Orthogonal Space Division Multiplexing Downlink”, in Proc. 2007 IST Mobile and Wireless Communications Summit, Budapest, Hungary, July 2007, 7 IEEE-format pages.

58.     Y. Fu, W.A. Krzymień, C. Tellambura, “Precoding for multiuser orthogonal space-time block-coded OFDM: Mean or covariance feedback?”, in Proc. IEEE International Conference on Communications (ICC’07), Glasgow, UK, June 2007.

59.     R.C. Elliott, W.A. Krzymień, “Downlink scheduling for multiple antenna multi-carrier systems with dirty paper coding via genetic algorithms”, in Proc. 6th International Workshop on Multi-Carrier Spread Spectrum (MC-SS’07), Herrsching, Germany, May 2007, pp. 47-56.

60.     R.C. Elliott, W.A. Krzymień, “Downlink scheduling for multiple antenna systems with dirty paper coding via genetic algorithms”, in Proc. IEEE Semiannual Vehicular Technology Conference (VTC’07-Spring), Dublin, Ireland, April 2007, pp. 2339-2343.

61.     B. Mielczarek, W.A. Krzymień, “Influence of CSI feedback errors on capacity of linear multi-user MIMO systems”, in ibid., pp. 2043-2047.

62.     B. Mielczarek, W.A. Krzymień, “Influence of CSI feedback delay on capacity of linear multi-user MIMO systems”, in Proc. 2007 IEEE Wireless Communications and Networking Conference (WCNC’07), Hong Kong, March 2007, pp. 1189-1193.

63.     Y. Fu, C. Tellambura, W.A. Krzymień, “Precoding for multiuser orthogonal space-time block-coded OFDM downlink over spatially-correlated channels”, in ibid., pp. 1308-1313.

64.     C. Bai, W.A. Krzymień, I.J. Fair, “Hybrid-ARQ for layered space time MIMO systems with channel state information only at the receiver”, in ibid., pp. 547-552.

65.     S. Sigdel, W.A. Krzymień, “Simplified antenna selection and user scheduling for orthogonal space-division multiplexing”, in ibid., pp. 1730-1735.

66.     C. Bai, B. Mielczarek, I.J. Fair, W.A. Krzymień, “Turbo coded type-II hybrid ARQ scheme with incremental redundancy using sub-block recovery”, in Proc. IEEE Globecom’06, Nov/Dec 2006, San Francisco, USA.

67.     M. Eslami, W.A. Krzymień, “Turbo coded MC-CDM communications with spatial multiplexing”, in ibid.

68.     B.C. Lim, C. Schlegel, W.A. Krzymień, “Sum rate maximization and transmit power minimization for multi-user orthogonal space division multiplexing”, in ibid.

69.     J. Liu, W.A. Krzymień, “A novel nonlinear joint transmitter-receiver processing algorithm for the downlink of multi-user MIMO systems”, in ibid.

70.     Y. Fu, W.A. Krzymień, C. Tellambura, “Non-linear precoding for OFDM systems in spatially-correlated doubly-selective MIMO channels”, in ibid.

71.     Y. Fu, C. Tellambura, W.A. Krzymień, “Adaptive precoding for switching between spatial multiplexing and diversity in MIMO OFDM with transmit antenna and path correlations”, in ibid.

72.     B.C. Lim, W.A. Krzymień, C. Schlegel, “User selection methods for multi-user downlinks with multiple-antenna terminals”, in Proc. IEEE ICCS’06, Singapore, Oct/Nov 2006.

73.     B.C. Lim, W.A. Krzymień, C. Schlegel, “Transmit antenna selection for sum rate maximization in transmit zero-forcing beamforming”, in ibid.

74.     C. Bai, I.J. Fair, W.A. Krzymień, “SR-ARQ for MIMO OFDM systems with channel state information only at the receiver”, in Proc. IEEE Semiannual Vehicular Technology Conference (VTC’06-Fall), Montreal, Canada, Sept. 2006.

75.     M. Eslami, W.A. Krzymień, “An efficient detector for spatially multiplexed MC-CDM communications”, ibid.

76.      Y. Fu, W.A. Krzymień, C. Tellambura, “Transmitter precoding for orthogonal space-time block coded OFDM in transmit-antenna and path-correlated channels”, ibid.

77.     K.R. Jacobson, W.A. Krzymień, “Cell dimensioning and network throughput in cellular multi-hop relay networks”, ibid.

78.     S. Sigdel, W.A. Krzymień, “Interference suppression through adaptive subset antenna transmission in interference limited MIMO wireless environments”, ibid.

79.     K.R. Jacobson, W.A. Krzymień, “Realistic throughput of cellular multi-hop relay networks with spatial reuse”, in Proc. Intl. Symp. on Wireless Personal Multimedia Communications (WPMC’06), San Diego, USA, Sept. 2006, pp. 966-970.

80.     B.C. Lim, W.A. Krzymień, C. Schlegel, “Impact of receive antenna selection on scheduling for orthogonal space division multiplexing”, ibid., pp. 840-844.

81.     J. Liu, W.A. Krzymień, "Minimum bit-error rate design of the zero-forcing criterion based Tomlinson-Harashima precoding for the multi-user MIMO downlink", ibid., pp. 721-725.

82.     B. Mielczarek, W.A. Krzymień, "Comparison of partial CSI encoding methods in multi-user MIMO systems", ibid., pp. 680-685.

83.     S. Sigdel, W.A. Krzymień, "Antenna and user subset selection in downlink multiuser orthogonal space-division multiplexing", ibid., pp. 671-675.

84.     B. Mielczarek, W.A. Krzymień, “Vector quantization of channel information in linear multi-user MIMO systems”, in Proc. IEEE Intl. Symp. on Spread Spectrum Techniques & Applications (ISSSTA’06), Manaus, Brazil, August 2006, pp. 302-306.

85.     B.C. Lim, C. Schlegel, W.A. Krzymień, “Efficient receive antenna selection algorithms and framework for transmit zero-forcing beamforming”, in Proc. IEEE Semiannual Vehicular Technology Conference (VTC’06-Spring), Melbourne, Australia, May 2006, pp. 2241-2245.

86.     J. Liu, W.A. Krzymień, “A minimum mean-square error criterion based nonlinear joint transmitter-receiver processing algorithm for the downlink of multi-user MIMO systems”, ibid., pp. 1982-1987.

87.     C. Bai, B. Mielczarek, I.J. Fair, W.A. Krzymień, “Improved analysis of list decoding and its application to convolutional codes”, in Proc. IEEE Globecom’05, St. Louis, USA, Nov/Dec 2005, pp. 369 - 373.

88.     Y. Fu, C. Tellambura, W.A. Krzymień, “Non-linear limited-feedback precoding for ICI reduction in closed-loop multiple-antenna OFDM systems”, in ibid.,  pp. 3087 – 3091.

89.     C. Bai, B. Mielczarek, I.J. Fair, W.A. Krzymień, “Sub-block recovery scheme for iterative decoding of turbo codes”, in Proc. IEEE VTC’05-Fall, Dallas, USA, Sept. 2005, pp. 1970 - 1974.

90.     S. Sigdel, W.A. Krzymień, “Performance of cellular MIMO spatial multiplexing downlink systems with transmit antenna selection”, in Proc. Intl. Symp. on Wireless Personal Multimedia Communications (WPMC’05), Aalborg, Denmark, September 2005, pp. 624-628.

91.     R.C. Elliott, A. Archipov, R. Raulefs, W.A. Krzymień, “Effective SINR mapping for an MC-CDMA system”, in Proc.5th Intl. Workshop on Multi-Carrier Spread-Spectrum (MC-SS 2005), Oberpfaffenhofen, Germany, Sept. 2005, pp. 361-370. Published as K. Fazel, S. Kaiser (Eds.), Multi-Carrier Spread-Spectrum. Dordrecht, The Netherlands: Springer, 2006.

92.     B. Mielczarek, W.A. Krzymień, “Throughput of heterogeneous multi-cell multi-user MIMO-OFDM systems”, in ibid., pp. 127-136.

93.     J. Liu, W.A. Krzymień, “A null space constraint based block Tomlinson-Harashima precoding technique for the multi-user MIMO downlink”, in Proc. 2005 IEEE Pacific Rim Conference on Communications, Computers & Signal Processing (PACRIM’05), Victoria, Canada, August 2005, pp. 61-64.

94.     B.C. Lim, C. Schlegel, W.A. Krzymień, “Antenna selection and power allocation for transmit channel-inversion beamforming under poor channel conditions”, in Proc. 17th Intl. Conf. on Wireless Comm. (Wireless’05), Calgary, AB, Canada, July 2005, pp. 202-217.

95.     K.R. Jacobson, W.A. Krzymień, “Minimizing co-channel interference in wireless relay networks”, in ibid., pp. 339-346.

96.     S. Sigdel, W.A. Krzymień, “Performance of MIMO spatial multiplexing systems with transmit antenna selection on frequency selective fading channels”, in ibid., pp. 29-38.

97.     D.J. Mazzarese, W.A. Krzymień, “Design rules for efficient scheduling of packet data on multiple antenna downlink”, in Proc. 2005 IST Mobile and Wireless Communications Summit, Dresden, Germany, June 2005.

98.     Yu Fu, W.A. Krzymień, C. Tellambura, “Multiuser and intercarrier interference suppression in OFDM downlink”, in Proc. 2005 IEEE Intl. Workshop on Convergent Technologies (IWCT’05), Oulu, Finland, June 2005, 5 IEEE format pages (CD-ROM).

99.     B. Mielczarek, W.A. Krzymień, “Soft parallel decoding of per-antenna-coded MIMO systems”, in Proc. 2005 IEEE Intl. Conf. on Communications (ICC’05), Seoul, Korea, May 2005, pp. 2256 - 2260.

100. G. Doná, W.A. Krzymień, “MMSE channel estimation using two-dimensional filtering in rapid time-variant environments”, in Proc. 2005 IEEE Vehicular Technology Conf. (VTC’05-Spring), May 2005, Stockholm, Sweden, pp. 490-494.

101. J. Liu, W.A. Krzymień, “A novel nonlinear precoding algorithm for the downlink of multiple antenna multi-user systems”, in ibid., pp. 887-891.

102. B. Mielczarek, W.A. Krzymień, “Flexible channel feedback quantization in multiple antenna systems”, in ibid., pp. 620-624.

103. C. Bai, W.A. Krzymień, I.J. Fair, B. Mielczarek, “Analysis of a sub-block recovery scheme for decoding a concatenated error control code”, in ibid., pp. 719-723.

104. Y. Fu, W.A. Krzymień, C. Tellambura, “Transmitter precoding for ICI reduction in OFDM systems”, in ibid., pp. 1788-1792.

105. J. Liu, W.A. Krzymień, “Improved Tomlinson-Harashima precoding for the downlink of multiple antenna multi-user systems”, in Proc. IEEE WCNC’05, New Orleans, USA, March 2005, pp. 466-472.

106. R. Novak, W.A. Krzymień, “Diversity combining options for spread spectrum OFDM systems in frequency selective channels”, in ibid., pp. 308-314.

107. E. Haas, W.A. Krzymień, “Coherent OFDM receiver with two-dimensional decision-feedback pilot and data symbol correction”, in Proc. 9th Intl. OFDM Workshop, Dresden, Germany, Sept. 2004, 5 IEEE format pages.

108. E. Haas, B. Mielczarek, W.A. Krzymień, “Comparison of channel estimation methods for turbo coded OFDM systems”, in Proc. IEEE WPMC’04, Abano Terme, Italy, Sept. 2004, pp. 392-396.

109. C. Bai, B. Mielczarek, W.A. Krzymień, I.J. Fair, “Efficient list decoding for parallel concatenated convolutional codes”, in Proc. IEEE Intl. Symp. Personal, Indoor and Mobile Radio Communications (PIMRC’04), Barcelona, Spain, Sept. 2004, pp. 2586-2590.

110. B. Mielczarek, W.A. Krzymień, “Throughput of realistic multi-user MIMO-OFDM systems”, in Proc. IEEE Intl. Symp. on Spread Spectrum Techniques & Applications, Sydney, Australia, Sept. 2004, pp. 434-438.

111. E. Haas, W.A. Krzymień, “Improved MC-CDMA reception employing two-dimensional decision-feedback pilot and data symbol correction”, in ibid, pp. 613-617.

112. B. Mielczarek, W.A. Krzymień, “Throughput of heterogeneous multi-user MIMO-OFDM systems”, in Proc. 16th Intl. Conf. on Wireless Comm. (Wireless’04), Calgary, AB, Canada, July 2004, pp. 215-224.

113. J. Liu, W.A. Krzymień, “Signal detection and pre-processing algorithms in layered space-time multiple input multiple output antenna systems”, ibid., pp. 9-21.

114. R. Hang, C. Schlegel, W.A. Krzymień, P. Goud Jr., “A robust timing recovery algorithm for spread-spectrum packet radio systems”, ibid., pp. 446-463.

115. S. Sigdel, W.A. Krzymień, “Performance of interference limited MIMO downlink systems with transmit antenna selection”, ibid., pp. 22-34.

116. Y. Fu, C. Tellambura, W.A. Krzymień, “Intercarrier interference reduction for OFDM with transmit diversity”, ibid., pp. 88-96.

117. D.J. Mazzarese, W.A. Krzymień, “Space-time linear processing and scheduling for the cellular downlink”, in Proc. IST Mobile and Wireless Communications Summit, Lyon, France, June 2004, pp. 85-90.

118. G.G. Messier, W.A. Krzymień, “A new MAP channel decoder trellis path metric for a CDMA mobile subject to channel estimation errors”, in Proc. 2004 IEEE Intl. Conf. on Communications (ICC’04), Paris, France, June 2004, pp. 2879-2883.

119. B. Mielczarek, W.A. Krzymień, “Convergence focused construction of hybrid ARQ systems with turbo codes”, ibid., pp. 351-355.

120. D.J. Mazzarese, W.A. Krzymień, “Linear space-time transmitter and receiver processing and scheduling for the MIMO broadcast channel”, in Proc. 2004 IEEE Vehicular Technology Conf. (VTC’04-Spring), May 2004, Milan, Italy, pp. 752-756.

121. G. Li, W.A. Krzymień, I.J. Fair, “Quasi-regular LDPC codes for space-time wireless transmission”, in Proc. 2004 IEEE Wireless Communications and Networking Conference, Atlanta, USA, March 2004, pp. 2416-2421.

122. R. Novak, W.A. Krzymień, “Packet re-transmission options for the SS-OFDM-F/TA system”, in Proc. 4th Intl. Workshop on Multi-Carrier Spread-Spectrum (MC-SS 2003), Oberpfaffenhofen, Germany, Sept. 2003, pp. 89-100. Published as K. Fazel, S. Kaiser (Eds.), Multi-Carrier Spread-Spectrum. Dordrecht, The Netherlands: Kluwer, 2004.

123. D. J. Mazzarese, W.A. Krzymień, “Throughput maximization and optimal number of active users on the two transmit antenna downlink of a cellular system”, in Proc. 2003 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM’03), Victoria, BC, Canada, August 2003, pp. 498-501.

124. Ge Li, W.A. Krzymień, I.J. Fair, “LDPC coded systems with D-BLAST structure”, ibid., pp. 510-513.

125. P. Goud Jr., C. Schlegel, W.A. Krzymień, R. Hang, et al., “Indoor MIMO channel measurements using dual polarized patch antennas”, ibid., pp. 752-755.

126. G.G. Messier, W.A. Krzymień, “Implementing channel codes with the CDMA forward link chip-level LMMSE receiver”, in the Proc. 15th Intl. Conf. on Wireless Comm. (Wireless’03), Calgary, AB, Canada, July 2003, pp. 411-417.

127. P. Goud Jr., C. Schlegel, R. Hang, W.A. Krzymień, et al., “MIMO channel measurements for an indoor office environment”, in ibid., pp. 423-427.

128. Ge Li, I.J. Fair, W.A. Krzymień, “Analysis of non-binary LDPC codes using Gaussian approximation”, in the Proc. 2003 IEEE Intl. Symp. on Information Theory, Yokohama, Japan, June-July 2003, p. 234 (one-page summary published).

129. G.G. Messier, W.A. Krzymień, “Estimation of in-cell and out-of-cell interference levels for improved CDMA forward link error correction”, in the Proc. 2003 IEEE Intl. Conference on Communications (ICC2003), Anchorage, Alaska, USA, May 2003, pp. 368-372.

130. K.W. Ang, W.A. Krzymień, “Performance of the multi-stage variable group hybrid interference cancellation scheme with timing and phase errors”, in the Proc. 2003 IEEE Semi-Annual Vehicular Technology Conference (VTC’03-Spring), Jeju, Korea, April 2003, pp. 1905-1909.

131. D. Mazzarese, W.A. Krzymień, “High throughput downlink cellular packet data access with multiple antennas and multiuser diversity”, ibid, pp. 1079-1083.

132. G.G. Messier, W.A. Krzymień, “A coloured Gaussian model for CDMA forward link in-cell interference”, ibid, pp. 2052-2056.

133. R. Novak, W.A. Krzymień, “SS-OFDM-F/TA system packet size and structure for high mobility cellular environments”, ibid, pp. 1438-1444.

134. G.G. Messier, W.A. Krzymień, “Improved forward link error correction for CDMA systems with space time transmit diversity”, in the Proc. IEEE Globecom’02, Taipei, Taiwan, November 2002, pp. 992-996.

135. R. Novak, W.A. Krzymień, “An adaptive spread spectrum OFDM packet data system with two dimensional radio resource allocation: Performance in low-mobility environments”, in the Proc. IEEE WPMC’02, Honolulu, Hawaii, USA, October 2002, pp. 163-167.

136. R.C. Elliott, W.A. Krzymień, “Scheduling algorithms for the cdma2000 packet data evolution”, in the Proc. 2002 IEEE Semi-Annual Vehicular Technology Conference (VTC2002-Fall), Sept. 2002, Vancouver, BC, Canada, pp. 304-310.

137. G.G. Messier, W.A. Krzymień, “Improving convolutional and turbo code performance on the CDMA forward link”, in the Proc. IEEE Intl. Symp. on Spread Spectrum Techniques & Applications, Prague, Czech Rep., Sept. 2002, pp. 29-33.

138. R. Tanner, W.A. Krzymień, “A comparison of fading channel state prediction techniques”, in the Proc. 14th Intl. Conf. on Wireless Comm. (Wireless’02), Calgary, AB, Canada, July 2002, pp. 312-317.

139. Ge Li, I.J. Fair, W.A. Krzymień, “Low density parity check codes for space-time wireless transmission”, ibid., pp. 76-82.

140. G.G. Messier, W.A. Krzymień, “Improving convolutional code performance on the CDMA forward link”, in the Proc. Virginia Tech. Symp. on Wireless Personal Comm., Blacksburg, Virginia, USA, June 2002, pp.  163-167.

141. C. H. Rentel, W. A. Krzymień, B. Darian, V. Vanghi, R. Elliott, "Comparative forward link traffic channel performance evaluation of HDR and 1XREME systems", in the Proc. 2002 IEEE Semi-Annual Vehicular Technology Conference (VTC2002-Spring), Birmingham, Alabama, USA, May 2002, pp. 160-164. 

142. M. Yavuz, D. Paranchych, G. Wu, Ge Li, W.A. Krzymień,  “Performance improvement of the HDR system due to hybrid ARQ”, in the Proc. IEEE 2001 Semi-Annual Vehicular Technology Conference (VTC2001-Fall), Atlantic City, NJ, USA, October 2001, pp. 2192-2196.

143. R. Novak, W.A. Krzymień, “A downlink OFDM-F/TDMA packet data system employing multi-user diversity”, in the Proc. 3rd Intl. Workshop on Multi-Carrier Spread-Spectrum & Related Topics (MC-SS 2001),Oberpfaffenhofen, Germany, Sept. 2001, pp. 181-190. Published as K. Fazel, S. Kaiser (Eds.), Multi-Carrier Spread-Spectrum & Related Topics. Dordrecht, The Netherlands: Kluwer, 2002.

144. G.G. Messier, J.S. Nielsen, W.A. Krzymień, “CDMA forward link performance evaluation using propagation measurements”, in the Proc. 2001 Intl. Conference on Communications (ICC2001), Helsinki, Finland, June 2001, pp. 2995-2999.

145. G.G. Messier, W.A. Krzymień, J.S. Nielsen, “Impact of propagation environment and transmit diversity on CDMA forward link performance”, in the Record Intl. Workshop on Wireless Communications & Networking: 3G and Beyond, Istanbul, Turkey, May 2001, 23 pages.

146. G.G. Messier, W.A. Krzymień, “An indoor IS-2000 transmit diversity evaluation using propagation measurements”, in the Proc.2001 Semi-Annual Vehicular Technology Conference (VTC2001-Spring), Rhodes, Greece, May 2001, pp. 423-427.

147. K.W. Ang, W.A. Krzymień, “Effects of different configurations of RAKE receivers on the performance of an interference cancellation scheme in frequency selective channels”, in the Proc. 7th IEEE Singapore Intl. Conf. on Communication Systems, Singapore, November 2000, paper # 953939293, 6 IEEE formatted pages.

148. L.F. Choy, I.J. Fair, W.A. Krzymień, “Complexity-performance trade-offs in turbo codes for IMT-2000”, in the Proc. 2000 IEEE Vehicular Technology Conference (VTC2000-Fall), Boston, USA, September 2000, pp. 2568-2575.

149. M. Jamil, W.A. Krzymień, D. van Wyk, “Performance analysis of constant envelope quadriphase sequences for CDMA”, in the Proc. IEEE Sixth Intl. Symposium on Spread Spectrum Techniques & Applications (ISSSTA2000), Parsippany, NJ, USA, September 2000, pp. 212-215.

150. R. Novak, W. Krzymień, “Cellular performance of a multi-service OFDM-CDMA system with spatially-dependent rate assignment and power control”, in the Proc. 2000 Intl. Conf. on Wireless Communications (Wireless2000), Calgary, Canada, July 2000, pp. 448-459.

151. L.F. Choy, W.A. Krzymień, I.J. Fair, “Turbo coding options for IMT-2000”, ibid., pp. 327-345.

152. S. Sun, W. Krzymień & B. Darian, "A new efficient contentionless protocol for packet data transmission in CDMA systems", in the Proc. 2000 IEEE Vehicular Technology Conference (VTC2000-Spring), Tokyo, Japan, May 2000, pp.36-40.

153. S. Kaiser, W.A. Krzymień, “An asynchronous spread spectrum multi-carrier multiple access system”, in the Proc.1999 Global Telecommunication Conference (Globecom’99), Rio de Janeiro, Brazil, December 1999, pp. 314-319.

154. S. Kaiser, W.A. Krzymień, “Performance tradeoffs in asynchronous spread spectrum multi-carrier multiple access”, in Proc. 2nd Intl. Workshop on Multi-Carrier Spread-Spectrum  & Related Topics (MC-SS’99), Oberpfaffenhofen, Germany, Sept. 1999, pp. 35-42. Published as K. Fazel, S. Kaiser (Eds.), Multi-Carrier Spread-Spectrum & Related Topics. Dordrecht, The Netherlands: Kluwer, 2000.

155. K.W. Ang, W.A. Krzymień, “A method of limiting the processing delay of the variable group hybrid interference cancellation scheme for CDMA systems”, Proceedings of the 1999 IEEE Vehicular Technology Conference (VTC’99-Fall), Amsterdam, The Netherlands, September 1999, pp. 1648-1652.

156. S. Kaiser, W.A. Krzymień, “Asynchronous spread spectrum multi-carrier multiple access system with pilot symbol aided channel estimation”, ibid., pp. 2701-2705.

157. R. Krenz, W.A. Krzymień, “Algorithms for forward link power allocation for packet data transmission in wideband CDMA”, ibid., pp. 2101-2105.

158. K.W. Ang, W.A. Krzymień, “An improved multi-stage variable group hybrid multi-user interference cancellation scheme for CDMA systems”, Proc. of the 1999 IEEE Intl. Symp. on Personal, Indoor and Mobile Radio Communications (PIMRC’99), Osaka, Japan, Sept. 1999, paper B3-3,  6 IEEE formatted pages.

159. Z. Wang, B.F. Cockburn, D.G. Elliott, W.A. Krzymień, “DSP-RAM: A logic-enhanced memory architecture for communication signal processing”, in Proc. 1999 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM’99), Victoria, Canada, August 1999, pp. 475-478.

160. K.W. Ang, W.A. Krzymień, “A novel variable group hybrid interference cancellation scheme for CDMA systems”, Proceedings of the 1999 IEEE Intl. Conference on Telecommunications (ICT’99), Cheju, Korea, June 1999, paper 3A1, 6 IEEE formatted pages.

161. R. Krenz, W.A. Krzymień, “Forward link power allocation in multiservice DS-CDMA wireless systems”, Proceedings of the 3rd European Personal Mobile Communications Conference (EPMCC’99), Paris, France, March 1999, pp. 381-386.

162. S. Sun, W. Krzymień, R. Krenz, A. Jalali, “Reliable hybrid ARQ data transmission with optimal signal-to-interference ratio assignment in CDMA PCS”, Proceedings of the 1998 IEEE Intl. Conf. on Universal Personal Communications (ICUPC’98), 5-9 October 1998, Florence, Italy, pp. 599-604.

163. S. Sun, W.A. Krzymień, A. Jalali, “Optimal forward link power allocation for data transmission in CDMA systems”, Proceedings of the 9-th IEEE Intl. Symposium on Personal, Indoor and Mobile Communications (PIMRC’98), 8-11 September 1998, Boston, USA, pp. 848-852.

164. L. Tomba, W.A. Krzymień, “Comparison of encoding/detection techniques for the reverse link of an MC-CDMA multiple access scheme”, Proceedings of the Fifth IEEE Intl. Symposium on Spread Spectrum Techniques & Applications (ISSSTA’98), 2-4 September 1998, Sun City, South Africa, pp. 195-199.

165. R. Hang, W.A. Krzymień, C.L. Despins, “Performance of an improved MAC protocol for reverse link short packet data transmission in UMTS”, Proceedings of the 1998 Intl. Conf. on Wireless Communications (Wireless’97), 6-8 July 1998, Calgary, Canada, pp. 379-397.

166. R. Krenz, W.A. Krzymień, A. Jalali, “Forward link design issues in multiservice CDMA wireless systems”, ibid.,  pp. 128-137.

167. R. Hang, W.A. Krzymień, C.L. Despins, “A MAC Protocol for Efficient Uplink Data Transmission of Short Packets in Wideband DS-CDMA”, Proceedings of the 1998 ACTS Mobile Communication Summit, 8-11 June 1998, Rhodes, Greece, pp. 19-24.

168. L. Tomba, W.A. Krzymień, “A model for the analysis of timing jitter in OFDM systems”, Proceedings of the 1998 IEEE Intl. Conf. on Communications (ICC’98), 7-11 June 1998, Atlanta, USA, pp. 1227-1231.

169. L. Tomba, W.A. Krzymień, “On the use of chip-level differential encoding for the uplink of MC-CDMA systems”, Proceedings of the 1998 IEEE Vehicular Technology Conference (VTC’98), 18-21 May 1998, Ottawa, Canada, pp. 218-223.

170. S. Sun, W.A. Krzymień, “Call admission policies for data users and capacity analysis of a multi-service CDMA personal communication system with different transmission schemes”, ibid., pp. 958-962.

171. S. Sun, W.A. Krzymień, A. Jalali, Q. Shen, "Performance comparison of two medium access control schemes for packet data traffic in DS-CDMA personal communication systems”, Proceedings of the 1997 IEEE Global Communications Conf. (Globecom’97)/ Communication Theory Mini Conf., 3-8 November 1997, Phoenix, USA, pp. 185-189.

172. A.C.K. Soong, W.A. Krzymień, "Effect of antenna diversity on performance reference symbol assisted interference cancellation in CDMA wireless systems", Proceedings of the 1997 IEEE Intl. Conf. on Universal Personal Communications (ICUPC’97), 12-16 October 1997, San Diego, USA, pp. 202-207.

173. S. Sun, W.A. Krzymień, "Matched filter based synchronizer design for rapid    synchronization of packet data transmissions in DS-CDMA personal    communications systems", Proceedings of the 1997 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PacRim’97), 20-22 August 1997, Victoria, Canada, pp. 5-8.

174. T. Renneberg, W.A. Krzymień, “A wavelet based multi-rate modulation scheme for optimization of a broadcast meteor-scatter communication channel”, Proceedings of the 1997 Intl. Conf. on Wireless Communications (Wireless’97), 9 - 11 July 1997, Calgary, Canada, pp. 188-205.

175. W.K.K. Kong, W.A. Krzymień, “Performance of two adaptive antenna array algorithms for the IS-95 reverse link”, ibid., pp. 480-488.

176. D. Liu, C.L. Despins, W.A. Krzymien, "Efficient and accurate DS-CDMA deterministic signature sequence performance evaluation over wireless fading channels", Proceedings of the 1997 IEEE Intl. Conf. on Communications (ICC’97), 8-12 June 1997, Montreal, Canada, pp. 339-343.

177. F. Fekri, W.A. Krzymień, A. Sesay, "Envelope correlation of wide-band signals in Rayleigh fading and its implication for frequency diversity”, Proceedings of the 1997 IEEE Vehicular Technology Conf. (VTC'97), 4-7 May 1997, Phoenix, USA, pp. 72 – 76.

178. A.C.K. Soong, W.A. Krzymień, "Performance of a reference symbol assisted multi-stage successive interference cancelling receiver with quadriphase spreading", ibid., pp. 460 - 464.

179. L. Tomba, W.A. Krzymień, "An OFDM/SFH-CDMA transmission scheme for the uplink," invited presentation at the First International Workshop on  Multi-Carrier Spread-Spectrum, 24-25 April 1997, Oberpfaffenhofen, Germany.  Published in K. Fazel, S. Kaiser (Eds.), Multi-Carrier Spread-Spectrum. Dordrecht, The Netherlands: Kluwer, 1997, pp. 203-210.

180. L. Tomba, W.A. Krzymień, "Reverse link performance of a coded OFDM/SFH-CDMA transmission scheme", Proceedings of the First IEEE Workshop on Signal Processing Advances in Wireless Communications  (SPAWC'97), 16-18 April 1997, Paris, France, pp. 241 – 244.

181. Q. Shen, W.A. Krzymień, “Power assignment in CDMA personal communication systems with integrated voice/data traffic”, Proceedings of the 1996 IEEE Global Telecommunications Conference (Globecom'96) / Communication Theory Mini-Conference, 18-22 November 1996, London, England, pp. 168-172.

182. L. Tomba, W.A. Krzymień, "Performance enhancement of multicarrier CDMA systems impaired by timing jitter", Proceedings of the 1996 IEEE Intl. Symp. on Spread Spectrum Techniques & Applications (ISSSTA'96), 22-25 September 1996, Mainz, Germany, pp. 136-140.

183. Q. Shen, W.A. Krzymień, "The effect of fading on the Erlang capacity of the IS-95 CDMA cellular system", Proceedings of the 1996 IEEE Intl. Conference on Communications (ICC'96), Dallas, USA, 23-27 June 1996, pp. 1829-1833.

184. L. Tomba, W.A. Krzymień, "Effect of carrier phase noise and frequency offset on the performance of multicarrier CDMA systems", ibid., pp. 1513-1517.

185. L. Tomba, W.A. Krzymień, "On the effect of chip synchronization error in MC-CDMA systems", presented at the 1996 Workshop on Multiaccess, Mobility and Teletraffic for Personal Communications (MMT’96), Paris, France, 20-22 May 1996, and published in Multiaccess, Mobility and Teletraffic for Personal Communications, B. Jabbari, P. Godlewski, X. Lagrange (Editors), Kluwer Academic Publishers, Boston 1996, pp. 43-56.

186. Q. Shen, W.A. Krzymień, "Performance improvement of closed-loop power control in CDMA cellular mobile communication systems", Proceedings of the 1996 IEEE  Vehicular Technology Conference (VTC’96), Atlanta, USA, 28 April - 1 May 1996, pp. 56-60.

187. A.C.K. Soong, W.A. Krzymien, "Robustness of the reference symbol assisted multistage successive interference cancelling receiver with imperfect parameter estimates", ibid., pp. 676-680.

188. A.C.K. Soong, W.A. Krzymień, "Performance of a reference symbol assisted multistage successive interference cancelling receiver in a multi-cell CDMA wireless system", Proceedings of the 1995 IEEE Global Telecommunications Conference (Globecom'95) / Communication Theory Mini-Conference, 13-16 November 1995, Singapore,  pp. 152-156.

189. A.C.K. Soong, W.A. Krzymień, "Performance issues in successive interference cancellation with reference symbol assisted channel estimation", Proceedings of the 1995 IEEE Intl. Conf. on Universal Personal Communications (ICUPC'95), 6-10 November 1995, Tokyo, Japan,  pp. 158-162.

190. B. Yeh, W.A. Krzymień, P.A. Goud, "Diversity combining and decision-feedback equalization for indoor wireless systems using constant envelope modulation", Proc. of the 7th  Intl. Conf. on Wireless Communications  (Wireless'95), Calgary,  Alberta,  July 1995, pp. 209-218.8.

191. A.C.K. Soong, W.A. Krzymień, "CDMA multi-user interference cancellation with reference-symbol aided estimation of channel parameters", Proc. of the 1995 IEEE Pacific Rim Conference on Communications, Computers & Signal Processing (PacRim’95), Victoria, BC, May 1995, pp. 429-432.

192. G.J. Erker, D.E. Dodds, W.A. Krzymień, “Digital loop extension using mid-span amplification”, Proc. of the 1995 IEEE Intl. Symposium on Circuits & Systems, Seattle, USA, 29 April – 3 May 1995, pp. 1452-1455.

193. W.A. Krzymień, A. Jalali, P. Mermelstein, "An improved acquisition algorithm for the synchronization of CDMA personal wireless systems", Proc. of the 5th IEEE Intl. Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC'94), The Hague, The Netherlands, 18-22 September 1994, pp. 444-448.

194. W. Zhuang, W.A. Krzymień, P.A. Goud, "Adaptive channel precoding for slowly fading channels", ibid., pp. 660-664.

195. W.A. Krzymień, A. Jalali, P. Mermelstein, "A rapid initial synchronization algorithm for CDMA microcellular systems", Proc. of the 6th  International Conference on Wireless Communications (Wireless'94), Calgary,  Alberta, 11-13 July 1994, pp. 587-596.

196. W. Zhuang, P.A. Goud, W.A. Krzymień, "Adaptive soft decision feedback equalization for indoor radio communications using trellis-coded CPFSK", Proc. of the 44th IEEE Vehicular Technology  Conference (VTC’94), Stockholm, Sweden, 8-10 June 1994, pp. 1364-1368.

197. W. Zhuang, W.A. Krzymień, P.A. Goud, "Trellis-coded CPFSK for micro-cellular wireless applications",  Proc. of the 5th Intl. Conf. on Wireless Communications (Wireless'93), Calgary, Alberta, Canada, July 1993, pp. 681-688.

198. W.D. Grover, W.A. Krzymień, J.C. Chin, "Background data service for cellular mobile radio", Proc. of the 43rd IEEE Vehicular Technology Conf. (VTC’93), Secaucus, N.J., U.S.A., May 1993, pp. 766-769.

199. R.S. Tse, W.A. Krzymień, "Spread spectrum multiple access with orthogonal convolutional codes for indoor digital radio", Proc. of the 1992 Canadian Conf. on Electrical and Computer Engineering (CCE&CE’92), Toronto, Canada,  September 1992, pp. TM2.16.1-4.

200. D.E. Dodds, G.J. Erker, W.A. Krzymień, "ISDN loop extension using negative impedance amplifier", ibid., pp. WM10.8.1-4.

201. T.E. Moore, W.A. Krzymień, "A simulation study of DS3 waiting time jitter accumulation in SONET", Proc. of the 1991 IEEE Global Telecommunications Conference (Globecom'91), Phoenix, U.S.A., December 1991, pp. 1855 – 1859.

202. R. Sharma, W.D. Grover, W.A. Krzymień, "FEC-assisted adaptive equalization in digital mobile radio", Proc. of the 1991 Canadian Conf. on Electrical and Computer Engineering (CCE&CE’91), Quebec City, Canada, September 1991, pp. 58.3.1 – 4.

203. T.E. Moore, W.A. Krzymień, "A waiting time jitter model", ibid., pp. 50.4.1 – 4.

204. M.Y. Cheung, W.D. Grover, W.A. Krzymień, "Combined framing and FEC coding for digital multiplex signals", Proc. of the 1991 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PacRim’91), Victoria, Canada, May 1991, pp. 205 – 210.

205. D.E. Dodds, W.A. Krzymień, T.D. Bilodeau, "Improved hybrid balance for U-interface ISDN basic access," Proc. of the 1990 Canadian Conference on Electrical and Computer Engineering, Ottawa, Canada, September 1990, pp. 71.1.1 – 4.

206. R.G. Kusyk, W.A. Krzymień, T.E. Moore, "Evaluation of pointer spreading techniques in SONET-based networks," ibid., pp. 71.2.1 – 4.

207. K.P. Benterud, W.D. Grover, W.A. Krzymień, "A novel application of lightwave subcarrier multiplexing to an ultra-high bit rate short distance data transfer problem," Proc. of the 15th Biennial Symposium on Communications, Kingston, Canada, June 1990, pp. 256 – 259.

208. W.D. Grover, W.A. Krzymień, T. Fong, A. Shen, "Turbo-Loop: A rate- adaptive digital subscriber loop technology for advanced ISDN access applications", Proc. of the 1989 IEEE Global Telecommunications Conference (Globecom'89), Dallas, USA, November 1989, pp. 1945-1951.

209. T.D. Bilodeau, W.A. Krzymień, "A simulation study of trellis-coded transceivers for the digital subscriber loop", Proc. of the 1989 Can. Conf. on Electrical & Computer Engineering, Montreal, Canada, September 1989, pp. 568-571.

210. T.E. Moore, J.J. Brown, W.A. Krzymień, "Jitter analysis for DS-3 to SONET interface circuit with reduced complexity", Proc. of the 1989 Pacific Rim Conference on Communications, Computers & Signal Processing, Victoria, Canada, June 1989, pp. 435-438.

211. A. Shen, W.D. Grover, W.A. Krzymień, "A simulation study of the potential digital transmission capability of subscriber loops with a rate-adaptive transmission method", ibid., pp. 36-39.

4. Patents and patent applications.

1.         B. Mielczarek, W.A. Krzymień, "Mitigation of transmission errors of quantized channel state information feedback in multi antenna systems", US Patent No. 8,234,546 B2 (granted 31 July 2012; assigned to Wi-LAN).

2.         B. Mielczarek, W.A. Krzymień, "Quantization of channel state information in multiple antenna systems", US Patent No. 8,116,391 B2 (granted 14 February 2012; assigned to Wi-LAN).

3.         B. Mielczarek, W.A. Krzymień, "Multi-tiered quantization of channel state information in multiple antenna systems", US Patent No. 8,036,282 B2 (granted 11 October 2011; assigned to Wi-LAN).

4.         B. Mielczarek, W.A. Krzymień, "Quantized channel state information prediction in multiple antenna systems", US Patent No. 8,009,778 B2 (granted 30 August 2011; assigned to TRTechnologies).

5.         B. Mielczarek, W.A. Krzymień, "Adaptive hybrid ARQ systems with BCJR decoding", US Patent No. 7,747,922 B2 (granted 29 June 2010; assigned to TRLabs).

6.         B. Mielczarek, W.A. Krzymień, "Mitigation of transmission errors of quantized channel state information feedback in multi antenna systems", International Patent Application No. PCT/CA2009/000464 (filed 21 April 2009; assigned to TRTechnologies).

7.         B. Mielczarek, W.A. Krzymień, "Quantized channel state information prediction in multiple antenna systems", International Patent Application No. PCT/CA2008/001569 (filed 5 September 2008; assigned to TRTechnologies).

8.         R.C. Elliott, W.A. Krzymień, "Scheduling of wireless packet data transmissions", US Patent No. 7,295,513 B2 (granted 13 November 2007, assigned to TRLabs).

9.         G.G. Messier, W.A. Krzymień, "Channel code decoding for the CDMA forward link", US Patent No. 6,996,385 (granted 7 February 2006; assigned to TRLabs).

10.     A. Jalali, W. Krzymień, P. Mermelstein, "A medium access control scheme for data transmission on code division multiple access (CDMA) wireless systems", European Patent EP 0 906 672 B1 (granted 21 January 2004; assigned to Nortel Networks Ltd.).

11.     Q. Shen, W.A. Krzymień, "Closed-loop power control scheme with prediction of power control commands and multi-level transmitted power adjustment", Canadian Patent No. 2183139 (granted 18 November 2003; assigned to TRLabs).

12.     Q. Shen, W.A. Krzymień, "Closed-loop power control scheme for wireless communication systems", US Patent No. 6 529 709 (granted 4 March 2003; assigned to TRLabs).

13.     W.A. Krzymień, S. Sun, "Spread spectrum time-division multiple access communication scheme", US Patent No. 6 493 334 (granted 10 Dec 2002; assigned to TRLabs).

14.     A. Jalali, W.A. Krzymień, P. Mermelstein, "A medium access control scheme for data transmission on code division multiple access wireless systems", US Patent No. 5,828,662 (granted 27 October 1998; assigned to Northern Telecom Ltd.).

15.     W.D. Grover, T. Fong, J.P. Dubuc, W.A. Krzymień, G.D. Fraser, "Method and apparatus for maximizing the transmission capacity of a multi-channel bidirectional communications link", US Patent No. 5,023,869 (granted 11 June 1991; assigned to Alberta Telecommunications Research Centre).

 

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