Library

Witold A. Krzymien

Scientist
Lab: Edmonton
t: (780)441-3811
e:





Publications:

  1. Robert C. Elliott and Witold A. Krzymien, "On The Convergence of Genetic Scheduling Algorithms for Downlink Transmission in Multi-User MIMO Systems", Wireless Personal Communications, September 8, 2010.

  2. Arash Talebi and Witold A. Krzymien, "Multiple-Antenna Multiple-Relay System with Precoding for Multiuser Transmission", The 5th International Wireless Communications and Mobile Computing Conference 2009 (IWCMC'09), June 21-24, 2009, Leipzig, Germany.

  3. Mohsen Eslami and Witold A. Krzymien, "Limited-Feedback Multiuser MIMO-OFDM Downlink with Spatial Multiplexing and Per-Chunk / Per-Antenna User Scheduling", IEEE 7th Workshop on Multi-Carrier Systems & Solutions 2009, Herrsching, Germany, May 5-6, 2009.

  4. Shreeram Sigdel and Witold A. Krzymien, "Efficient User Selection and Ordering Algorithms for Successive Zero-Forcing Precoding for Multiuser MIMO Downlink", IEEE 69th Vehicular Technology Conference 2009 (VTC Spring/April 2009), Barcelona, Spain, pp 1-6.

  5. Shreeram Sigdel and Witold A. Krzymien, "Simplified Fair Scheduling and Antenna Selection Algorithms for Multiuser MIMO Orthogonal Space3-Division Multiplexing Downlink", IEEE Transactions on Vehicular Technology, vol 58, pp 1329-1344, March 2009.

  6. Shreeram Sigdel (supervisor: Dr. Witold A Krzymien), "Multiple Anatenna Processing and User Scheduling Algorithms for High Throughput wireless Communication System", PhD Thesis, University of Saskatchewan, Department of Electrical Engineering, Fall 2008.

  7. Shreeram Sigdel (supervisor: Witold A. Krzymien), "Multiple Antenna Processing and User Scheduling Algorithms for High Throughput Wireless Communications Systems", PhD Thesis, University of Alberta, Department of Electrical and Computer Engineering.

  8. Mohsen Eslami and Witold A. Krzymien, "Downlink Limited Feedback Transmission Schemes for Asymmetric MIMO Channels", IEEE Vehicular Technology Conference 2008 (VTC FALL 2009), Calgary, AB, September 2008.

  9. Aresh Talebi and Witold A. Krzymien, "Optimized Power Allocation for Multiple-Antenna Multiple-Relay Cooperative Communication System", 10TH International Symposium on Spread Spectrum Techniques and Applications (ISSSTA'08), August 25-28, 2008, Bologna, Italy.

  10. Jia Liu and Witold A. Krzymien, "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, pp 2189-2204, July 2008.

  11. Chunlong Bai, Bartosz Mielczarek, Witold A. Krzymien and Ivan J. Fair, "Sub-block Recovery Scheme for Iterative Decodeing of Turbo Codes with the Sub-block Structure", IEICE Transactions on communications, vol E91-B, No. 5, May 2008.

  12. Ahmed Allam (supervisor: Dr. Witold A. Krzymien), "Noise and Quadrature Signal Generation Problems in CMOS Radio Frequency", Ph.D. Thesis, Department of Electrical & Computer Engineering, University of Alberta, April 2008.

  13. Chunlong Bai (supervisors: Dr. Witold A. Krzymien and Dr. Ivan J. Fair), "Improved Forward Error Control Decoding and Hybrid ARQ Techniques for Wireless Systems", Ph.D. Thesis, Department of Electrical and Computer Engineering, University of Alberta, March 2008.

  14. Shreeram Sigdel and Witold A. Krzymien, "Simplified Channel-Aware Greedy Scheduling and Antenna Selection Algorithms for Multiuser MIMO Systems Employing Orthogonal Space Division Multiplexing", Advances in Mobile and Wireless Communications; Views of the 16th IST Mobile and Wireless Communication Summit, Chapter Two, pp 23-51, publisher - Springer, 2008.

  15. Jia Liu and Witold A. Krzymien, "Improved Tomlinson-Harashima Precoding for the Downlink of Multi-user MIMO Systems", Canadian Journal of Electrical and Computer Engineering 2007 (CJECE 2007), vol 32, no 4, pp 133-144, Fall 2007.

  16. Ge Li (supervisors: Dr. W.A. Krzymien and Dr. I.J. Fair), "Analysis, Design, and Application of Nonbinary Low-Density Parity-Check Codes", Ph.D. Thesis, Department of Electrical and Computer Engineering, University of Alberta, September 2007.

  17. Shreeram Sigdel and Witold A. Krzymien, "Fair Scheduling and Antenna Selection Algorithms for Multiuser MIMO Orthogonal Space Division Multiplexing Downlink", 2007 IST Mobile and Wireless Communications Summit, Budapest, Hungary, Pages 1-7, July 1-5, 2007, INVITED Paper.

  18. Jia LIU (supervisor: Dr. Witold Krzymien), "Precoding for Spatial Layer Separation on Multi-User MIMO Downlink", PhD Thesis, University of Alberta, Department of Electrical & Computer Engineering, Spring 2007.

  19. Robert Novak and Witold A. Krzymien, "Diversity Combining Options and Low-Complexity MMSE Equalization for Spread Spectrum OFDM Systems in Frequency Selective Fading Channels", Wireless Communications - An International Journal (Springer), Vol. 41, No. 2, pp. 281-300, April 2007.

  20. Jia Liu and Witold A. Krzymien, "A Novel Nonlinear Precoding Algorithm for the Downlink of Multiple Antenna Multi-user Systems", Wireless Personal Communications, Vol. 41, No. 2, pp. 207-223, April 2007.

  21. Bartosz Mielczarek and Witold A. Krzymien, "Influence of CSI Feedback Errors on Capacity of Linear Multi-user MIMO Systems", 65th IEEE Vehicular Technology Conference 2007 (VTC '07 Spring), Dublin, Ireland, April 2007.

  22. Robert C. Elliott and Witold A. Krzymien, "Downlink Scheduling for Multiple Antenna Systems with Dirty Paper Coding via Genetic Algorithms", IEEE 65th Vehicular Technology Conference (VTC '07 Spring), Dublin, Ireland, April 2007.

  23. Shreeram Sigdel and Witold A. Krzymien, "Simplified Antenna Selection and User Scheduling for Orthogonal Space-Division Multiplexing", IEEE Wireless Communications and Networking Conference(WCNC'07), Hong Kong, pp. 1728-1733, March 2007.

  24. Chunlong Bai, Witold A. Krzymien and Ivan J. Fair, "Hybrid-ARQ for Layered Space Time MIMO Systems with Channel State Information Only at the Receiver", IEEE Wireless Communications and Networking Conference 2007 (WCNC'07), pp. 546-551, March 2007.

  25. Yu Fu, Chintha Tellambura and Witold A. Krzymien, "Precoding for Multiuser Orthogonal Space-Time Block-Coded OFDM Downlink Over Spatially-Correlated Channels", IEEE Wireless Communications and Networking Conference (WCNC '07), Hong Kong, pp. 1307-1312, March 2007.

  26. Bartosz Mielczarek and Witold A. Krzymien, "Influence of CSI Feedback Delay on Capacity of Linear Multi-User MIMO Systems", IEEE Wireless Communications and Networking Conference 2007(WCNC '07), Hong Kong, pp. 1188-1192, March 31-April 3, 2007.

  27. Chunlong Bai, Bartosz Mielczarek, Witold A. Krzymien and Ivan J. Fair, "Improved Analysis of List Decoding and Its Application to Convolutional Codes and Turbo Codes", IEEE Transactions on Information Theory, Vol. 53, No. 2, pp. 615-627, February 2007.

  28. Yu Fu, Chintha Tellambura and Witold A. Krzymien, "Transmitter Precoding for ICI Reduction in Closed-Loop MIMO OFDM Systems", IEEE Transactions on Vehicular Technology, Vol. 56, No. 1, pp. 115-125, January 2007.

  29. Robert C. Elliott and Witold A. Krzymien, "Downlink Scheduling for Multiple Antenna Multi-Carrier Systems with Dirty Paper Coding Via Genetic Algorithms", Multi-Carrier Spread Spectrum 2007 (MC-SS 2007), publisher: Springer-the Netherlands, editor: Simon Plass et al, pp 47-56.

  30. Yu Fu, Chintha Tellambura and Witold A. Krzymien, "Adaptive Precoding for Switching between Spatial Multiplexing and Diversity in MIMO OFDM with Transmit Antenna and Path Correlations", IEEE GLOBECOM 2006, San Francisco, CA, USA, November 27, December 1, 2006.

  31. Yu Fu, Witold A. Krzymien and Chintha Tellambura, "Non-Linear Precoding for OFDM Systems in Spatially-Correlated Frequency-Selective Fading MIMO Channels", IEEE GLOBECOM 2006, San Francisco, CA, USA, November 27-December 1, 2006.

  32. Jia Liu and Witold A. Krzymien, "A Novel Nonlinear Joint Transmitter-Receiver Processing Algorithm for the Downlink of Multi-User MIMO Systems", IEEE GLOBECOM 2006, San Francisco, CA, USA, November 27, December 1, 2006.

  33. Boon Chin Lim, Christian Schlegel and Witold A. Krzymien, "Sum Rate Maximization and Transmit Power Minimization for Multi-User Orthogonal Space Division Multiplexing", IEEE GLOBECOM 2006, San Francisco, USA, November 27-December 1, 2006.

  34. Mohsen Eslami and Witold A. Krzymien, "Turbo Coded MC-CDM Communications with Spatial Multiplexing", IEEE GLOBECOM 2006, San Francisco, CA, USA, November 27-December 1, 2006.

  35. Chunlong Bai, Bartosz Mielczarek, Ivan J. Fair and Witold A. Krzymien, "Turbo Coded Type-II H-ARQ Scheme with Incremental Redundancy Using Sub-Block Recovery", IEEE GLOBECOM 2006, San Francisco, CA, USA, November 27-December 1, 2006.

  36. Boon Chin Lim, Witold A. Krzymien and Christian Schlegel, "Transmit Antenna Selection for Sum Rate Maximization in Transmit Zero-Forcing Beamforming", IEEE International Conference on Communication System (ICCS'06), Singapore, October 30-November 1, 2006.

  37. Boon Chin Lim, Witold A. Krzymien and Christian Schlegel, "User Selection Methods for Multi-User Downlinks with Multiple-Antenna Terminals", IEEE International Conference on Communication Systems (ICCS '06), Singapore, October 30-November 1, 2006.

  38. Shreeram Sigdel and Witold A. Krzymien, "Interference Suppression Through Adaptive Subset Antenna Transmission in Interference Limited MIMO Wireless Environments", IEEE Vehicular Technology Conference (VTC'06-Fall), Montreal, PQ, September 2006.

  39. Yu Fu, Witold A. Krzymien and Chintha Tellambura, "Transmitter Precoding for Orthogonal Space-Time Block-Coded OFDM in Transmit-Antenna and Path-Correlated Channels", IEEE Vehicular Technology Conference (VTC'06-Fall), Montreal, PQ, September 2006.

  40. Mohsen Eslami and Witold A. Krzymien, "An Efficient Detector for Spatially Multiplexed MC-CDM Communications", IEEE Vehicular Technology Conference (VTC'06 Fall), Montreal, PQ, September 2006.

  41. Chunlong Bai, Ivan J. Fair and Witold A. Krzymien, "SR-ARQ for MIMO OFDM Systems with Channel State Information Only at the Receiver", IEEE Vehicular Technology Conference (VTC'06 Fall), Montreal, PQ, September 2006.

  42. Shreeram Sigdel and Witold A. Krzymien, "Antenna and User Subset Selection in Downlink Multiuser Orthogonal Space-Division Multiplexing", International Symposium on Wireless Personal Multimedia Communications (WPMC'06), San Diego, CA, pp. 671-675, September 17-20, 2006.

  43. Bartosz Mielczarek and Witold A. Krzymien, "Comparison of Partial CSI Encoding Methods in Multi-User MIMO Systems", International Symposium on Wireless Personal Multimedia Communications (WPMC 2006), San Diego, Ca, USA, pp. 680-685, September 17-20, 2006 .

  44. Jia Liu and Witold A. Krzymien, "Minimum Bit-Error Rate Design of Zero-Forcing Criterion Based Tomlinson-Harashima Precoding for Multi-User MIMO Downlinks", International Symposium on Wireless Personal Multimedia Communications (WPMC 2006), San Diego, Ca, USA, pp. 721-725, September 17-20, 2006.

  45. Boon Chin Lim, Witold A. Krzymien and Christian Schlegel, "Impact of Receive Antenna Selection on Scheduling for Orthogonal Space Division Multiplexing", International Symposium on Wireless Personal Multimedia Communications (WPMC 2006), San Diego, CA, USA, pp. 840-844, September 17-20, 2006.

  46. Kevin R. Jacobson and Witold A. Krzymien, "Realistic Throughput of Cellular Multi-Hop Relay Networks With Spatial Reuse", WPMC 2006, San Diego, CA, pp. 966-970, September 17-20, 2006.

  47. K.R. Jacobson and W.A. Krzymien, "Cell Dimensioning and Network Throughput in Cellular Multi-Hop Relay Networks", Proceedings of the Vehicular Technology Conference, Fall 2006 (VTC '06), Montreal, PQ, September 2006.

  48. Bartosz Mielczarek and Witold A. Krzymien, "Vector Quantization of Channel Information in Linear Multi-User MIMO Systems", IEEE Ninth International Symposium on Spread Spectrum Techniques & Applications (ISSSTA '06), Manaus, Brazil, pp. 302-306, August 28-31, 2006 .

  49. Jia Liu and Witold A. Krzymien, "A Minimum Mean-Square Error Criterion Based Nonlinear Joint Transmitter-Receiver Processing Algorithm for the Downlink of Multi-User MIMO System", IEEE Vehicular Technology Conference (VTC '06 Spring), Melbourne, Australia, pp. 1982-1987, May 7-10, 2006.

  50. Boon Chin Lim, Christian Schlegel and Witold A. Krzymien, "Efficient Receive Antenna Selection Algorithms and Framework for Transmit Zero-Forcing Beamforming", IEEE Vehicular Technology Conference (VTC '06 Spring), Melbourne, Australia, pp. 2241-2245, May 7-10, 2006.

  51. Geoffrey G. Messier and Witold A. Krzymien, "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, pp. 1074-1079, May 2006.

  52. Ge Li, Ivan J. Fair and Witold A. Krzymien, "Low-density Parity-Check Codes for Space-Time Wireless Transmission", IEEE Transactions on Wireless Communications, Vol. 5, No. 2, pp. 312-322, February 2006.

  53. Robert Novak (supervisor: Dr. Witold A. Krzymien), "Adaptive Spread Spectrum OFDM High Throughput Cellular Data Systems", Ph.D. Thesis, Department of Electrical & Computer Engineering, University of Alberta, January 2006.

  54. Geoffrey G. Messier and Witold A. Krzymien, "Improved Channel Decoding for the CDMA Forward Link Chip-Level LMMSE Receiver", IEEE Transactions on Vehicular Technology, Vol. 55, No. 1, pp. 405-410, January 2006.

  55. Yu Fu, Chintha Tellambura, and Witold A. Krzymien, "Non-Linear Limited-Feedback Precoding for ICI Reduction in Closed-Loop Multiple-Antenna OFDM Systems ", Proceedings of IEEE GLOBECOM 2005, St. Louis, USA, No. WC21-4, pp. 3087-3091, November 2005.

  56. Chunlong Bai, Bartosz Mielczarek, Ivan J. Fair and Witold A. Krzymien , "Improved Analysis of List Decoding and Its Application to Convolutional Codes ", Proceedings of IEEE GLOBECOM 2005, St. Louis, USA, No. GC12-2, pp. 369-374, November 2005 .

  57. David Mazzarese (supervisors: Dr. Ivan Fair and Dr. Witold A. Krzymien), "High Throughput Wireless Downlink Packet Data Access with Multiple Antennas and Multi User Diversity", Ph.D. Thesis, Department of Electrical and Computer Engineering, University of Alberta, October 2005.

  58. Robert Elliott, Alexander Arkhipov, Ronald Raulefs and Witold A. Krzymien, "Effective SINR Mapping for an MC-CDMA System", 5th International Workshop on Multi-Carrier Spread-Spectrum, Oberpfaffenhofen, Germany, September 14-16, 2005 (published as K. Fazel & S. Kaiser (Eds) Multi-Carrier Spread-Spectrum. Dordrecht, The Netherlands: Springer 2006).

  59. Bartosz Mielczarek and Witold A. Krzymien, "Throughput of Heterogeneous Multicell Multi-user MIMO-OFDM Systems", 5th International Workshop on Multi-Carrier Spread-Spectrum, Oberpfaffenhofen, Germany, September 14-16, 2005 (published as K. Fazel & S. Kaiser (Eds) Multi-Carrier Spread-Spectrum. Dordrecht, The Netherlands: Springer 2006).

  60. Chunlong Bai, Bartosz Mielczarek, Witold A. Krzymien, Ivan J. Fair, "Sub-Block Recovery Scheme for Iterative Decoding of Turbo Codes", Proceedings of IEEE 62nd Semi-annual Vehicular Technology Conference (VTC '05 Fall), Dallas, Texas, USA, pp. 1970-1974, September 2005.

  61. Jia Liu, Witold A. Krzymien, "A Null Space Constraint Based Block Tomlinson-Harashima Precoding Technique for the Multi-User MIMO Downlink", 2005 IEEE Pacific Rim Conference on Communications Computers and Signal Processing (PACRIM'05), Victoria, BC, pp. 61-64, September 2005.

  62. Shreeram Sigdel, Witold A. Krzymien, "Performance of MIMO Spatial Multiplexing Systems with Transmit Antenna Selection on Frequency Selective Fading Channels", International Conference on Wireless Communications 2005 (Wireless 2005), Calgary, AB, A-5, pp. 29-38, July 11-13, 2005.

  63. Boon Chin Lim, Christian Schlegel, Witold A. Krzymien, "Antenna Selection and Power Allocation for Transmit Channel-Inversion Beamforming Under Poor Channel Conditions", International Conference on Wireless Communications 2005, Calgary, AB, pp F-4:202-217, July 11-13, 2005.

  64. Kevin R. Jacobson, Witold A. Krzymien, "Minimizing Co-Channel Interference in Wireless Relay Networks", International Conference on Wireless Communications (Wireless'05), Calgary, AB, pp. 339-346, July 11-13, 2005.

  65. Yu Fu, Witold A. Krzymien, Chintha Tellambura, "Multiuser and Intercarrier Interference Suppression in OFDM Downlink", 2005 IEEE International Workshop on Convergent Technologies (IWCT'05), Oulu, Finland, 5 pgs., June 2005.

  66. David J. Mazzarese, Witold A. Krzymien, "Design Rules for Efficient Scheduling of Packet Data on Multiple Antenna Downlink", 14th IST Wireless and Mobile Communications Summit (IST 2005), Dresden, Germany. Vol. 1, No. 1, June 2005.

  67. Bartosz Mielczarek and Witold Krzymien, "Soft Parallel Decoding of Per-Antenna-Coded MIMO Systems", 2005 IEEE International Conference on Communications (ICC'05), Seoul, Korea, pp. 2256-2260, May 2005.

  68. Gabriele Dona, Witold A. Krzymien, "MMSE Channel Estimation Using Two-Dimensional Filtering in Rapid Time-Variant Environments", Proceedings of 2005 IEEE Vehicular Technology Conference (VTC'05-Spring), Stockholm, Sweden, pp. 490-494, May 2005.

  69. Bartosz Mielczarek and Witold Krzymien, "Flexible Channel Feedback Quantization in Multiple Antenna Systems", Proceedings of 2005 IEEE Vehicular Technology Conference (VTC'05-Spring), Stockholm, Sweden, Vol. 1, pp. 620-624, May 2005.

  70. Yu Fu, Witold A. Krzymien, Chintha Tellambura, "Transmitter Precoding for ICI Reduction in OFDM Systems", Proceedings of the 2005 IEEE Vehicular Technology Conference (VTC'05-Spring), Stockholm, Sweden, pp. 1788-1792, May 2005.

  71. Jia Liu, Witold A. Krzymien, "A Novel Nonlinear Precoding Algorithm for the Downlink of Multiple Antenna Multi-User Systems", Vehicular Technology Conference 2005 (VTC'05), Stockholm, Sweden, pp. 887-891, May 2005.

  72. Chunlong Bai, Witold A. Krzymien, Ivan J. Fair, Barosz Mielczarek, "Analysis of a Sub-Block Recovery Scheme for Decoding a Concatenated Error Control Code", Proceedings of IEEE 61st Semi-annual Vehicular Technology Conference (VTC '05 Spring), Stockholm, Sweden, Vol. 2, pp. 719-723,May 2005.

  73. Geoffrey G. Messier, Witold A. Krzymien, "Improving channel Decoder Performance on the CDMA Forward Link", IEEE Transactions on Wireless Communications, vol.4, no.3, pp 1064-1072, May 2005.

  74. Anthony C.K. Soong, Witold A. Krzymien, Young C. Yoon, "CDMA2000 Evolution: 1x EV-DV", Guest Editorial for the Special Feature Topic, IEEE Communications Magazine, pp. 34-35, April 2005.

  75. Robert Novak, Witold A. Krzymien, "Diversity Combining Options for Spread Spectrum OFDM Systems in Frequency", Proceedings of Wireless Communications and Networking Conference (WCNC'05), New Orleans, LA, USA, pp 308-314, March 2005.

  76. Jia Liu, Witold A. Krzymien, "Improved Tomlinson-Harashima Precoding for the Downlink of Multiple Antenna Multi-User Systems", 2005 IEEE Wireless Communications and Networking Conference (WCNC '05), pp 466-472, March 2005.

  77. Eric Haas, Witold A. Krzymien , "Coherent OFDM Receiver with Two-dimensional Decision-feedback Pilot and Data Symbol Correction ", Proceedings of the 9th International OFDM Workshop, (OFDM '04), Dresden, Germany, September 2004.

  78. Shreeram Sigdel, Witold A. Krzymien, "Performance of Cellular MIMO Spatial Multiplexing Downlink Systems with Transmit Antenna Selection ", Proceedings of IEEE WPMC 2004, Aalborg, Denmark, pp 624-628, September 2005.

  79. E. Haas, B. Mielczaarek, W.A. Krzymien, "Improved Channel Estimation Methods for Turbo Coded OFDM Systems", Proceedings of the IEEE Wireless Personal Media Communications (WPMC'04), Abano Terme, Italy, vol. 3, pp 392-396, September 2004.

  80. C. Bai, B. Mielczarek, W.A. Krzymien and I.J. Fair, "Efficient List Decoding for Parallel Concatenated Convolutional Codes", 15th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Barcelona, Spain, September 5, 2004.

  81. Erik Haas, Witold Krzymien, "Improved MC-CDMA Reception Employing Two-Dimensional Decision-Feedback Pilot and Data Symbol Correction", International Symposium on Spread Spectrum Techniques and Applications, (ISSSTA 2004), Sydney, Australia, pp 56-60, August 30-September 2, 2004.

  82. B. Mielczarek, W.A. Krzymien, "Throughput of Realistic Multi-User MIMO-OFDM Systems", International Symposium on Spread Spectrum Techniques and Applications, Sydney, Australia, pp 434-438, September 2004.

  83. Geoffrey Messier (supervisor: Dr. Witold Krzymien), "Techniques for Improved CDMA Forward Link Performance", Ph.D. Thesis, The University of Alberta, August 2004.

  84. S. Sigdel, W.A. Krzymien, "Performance of Interference Limited MIMO Downlink Systems with Transmit Antenna Selection", Wireless 2004 proceedings, Calgary, Alberta, pp. 22-34, July 12-14, 2004.

  85. B. Mielczarek, W. Krzymien, "Throughput of Heterogeneous Multi-User MIMO-OFDM Systems", Wireless 2004 proceedings, Calgary, Alberta, pp. 215-224, July 12-14, 2004.

  86. Yu Fu, Chintha Tellambura, Witold A. Krzymien, "Intercarrier Interference Reduction for OFDM with Transmit Diversity", Proceedings of the 16th International Conference on Wireless Communications (Wireless 2004), Calgary, Alberta, pp 88-96, July 12-14, 2004.

  87. Robert Hang, Christian Schlegel, Witold A. Krzymien, Paul Goud Jr., "A Robust Timing Recovery Algorithm for Spread-Spectrum Packet Radio Systems", Proceedings of the 16th International Conference on Wireless Communications (Wireless 2004), Calgary, Alberta, pp 446-463, July 12-14, 2004.

  88. J. Liu, W.A. Krzymien, "Signal Detection and Pre=Processing Algorithms in Layered Space-Time Multiple Input Multiple Output Antenna Systems", Wireless 2004 proceedings, Calgary, AB, pp 9-21, July 12-14, 2004.

  89. D.J. Mazzarese and W.A. Krzymien, "Space-Time Linear Processing and Scheduling for the Cellular Downlink", 13th IST Wireless and Mobile Communications Summit (IST 2004), Lyon, pp 85-90, June 27, 2004.

  90. B. Mielczarek and W.A. Krzymien, "Convergence Focused Construction of Hybrid ARQ Systems with Turbo Codes", IEEE Intl. Conference on Communications 2004 (ICC '04), June 2004.

  91. G.G. Messier, W.A. Krzymien, "A New MAP Channel Decoder Trellis Path Metric for a CDMA Mobile Subject to Channel Estimation Errors", Proc. 2004 IEEE International Conference on Communications (ICC'04), Paris, France, pp. 2879-2883, June 2004.

  92. D.J. Mazzarese and W.A. Krzymien, "Linear Space-Time Transmitter and Receiver Processing and Scheduling for the MIMO Broadcast Channel", IEEE Semiannual Vehicular Technology Conference (VTC '04-Spring), Milan, Italy, May 17-19, 2004.

  93. Robert Novak, Witold A. Krzymien, "Efficient Packet Data Service in a Spread Spectrum OFDM Cellular System with 2-Dimensional Radio Resource Allocation", European Transactions on Telecommunications; Special Issue on Multi-Carrier Spread-Spectrum, Vol. 15, Issue 5, pp 185-199, May/June 2004.

  94. Ge Li, Witold A. Krzymien, Ivan J. Fair, "Quasi-Regular LDPC Codes for Space-Time Wireless Transmission", Proceedings 2004 IEEE Wireless Communications and Networking Conference, Atlanta, USA, pp 2416-2421, March 2004.

  95. Robert C. Elliott, Witold A. Krzymien, "Scheduling Algorithms for High-throughput Packet Data Service in Cellular Radio Systems", Canadian Journal of Electrical & computer Engineering, Special Issue on Cellular Radio Systems, Vol. 29, No. 1/2, pp. 117-127, January/April 2004.

  96. Paul Goud Jr., Christian Schlegel, Witold A. Krzymien, Robert Hang, "Multiple Antenna Communications Systems - An Emerging Technology", Canadian Journal of Electrical & Computer Engineering, Special Issue on Advances in Wireless Communications and Networking, Vol. 29, No. 1/2, pp. 51-59, January/April 2004.

  97. Robert C. Elliott (supervisor: Dr. Witold Krzymien), "Scheduling Algorithms for High Throughput Packet Data Service in Cellular Radio Systems", M.Sc. Thesis, Department of Electrical and Computer Engineering, University of Alberta, October 2003.

  98. R. Novak, W.A. Krzymien, "Packet Re-Transmission Options for the SS-OFDM-F/TA System", Fourth International Workshop on Multi-Carrier Spread Spectrum & Related Topics (MC-SS 2003), Oberpfaffenhofen, Germany, pp. 89-100, September 17-19, 2003.

  99. G. Li, W.A. Krzymien, I.J. Fair, "LDPC Coded Systems with D-BLAST Structure", IEEE Pacific RIM Conference on Communications, Computers and Signal Processing, Victoria, BC, pp. 510-513, August 28-30, 2003.

  100. D.J. Mazzarese, W.A. Krzymien, "Throughput Maximization and Optimal Number of Active Users on the Two Transmit Antenna Downlink of a Cellular System", IEEE Pacific RIM Conference on Communications, Computers and Signal Processing, Victoria, BC, pp. 498-501, August 28-30, 2003.

  101. P. Goud Jr., C. Schlegel, W.A. Krzymien, R. Hang, Z. Bagley, S. Messerly, M. Nham, V. Rajamani, "Indoor MIMO Channel Measurements Using Dual Polarized Patch Antenna", IEEE Pacific RIM Conference on Communications, Computers and Signal Processing, Victoria, BC, pp. 752-755, August 28-30, 2003.

  102. Carlos Rentel-Gomez (supervisor: Dr. Witold A. Krzymien), "Performance Evaluation of High Bit Rate Cellular packet Data Systems", M.Sc. Thesis, Department of Electrical and Computer Engineering, University of Alberta, July 2003.

  103. P. Goud Jr., C. Schlegel, R. Hang, W.A. Krzymien, Z. Bagley, S. Messerly, P. Watkins, V. Rajamani, "MIMO Channel Measurements for an Indoor Office Environment", Wireless 2003 proceedings, Calgary, Alberta, pp. 423-427, July 7-9, 2003.

  104. G.G. Messier, W.A. Krzymien, "Implementing Channel Codes with the CDMA Forward Link Chip Level LMMSE Receiver", Wireless 2003 proceedings, Calgary, Alberta, pp. 411-417, July 7-9, 2003.

  105. G. Li, I.J. Fair, W.A. Krzymien, "Analysis of Nonbinary LDPC Codes Using Gaussian Approximation", IEEE International Symposium on Information Theory (ISIT2003), Yokohama, Japan, pp. 234, June 29-July 4, 2003.

  106. G.G. Messier, W.A. Krzymien, "Estimation of In-Cell and Out-of-Cell Interference Levels for Improved CDMA Forward Link Error Correction", IEEE International Conference on Communications (ICC 2003), Anchorage, Alaska, USA, Vol. 1, pp. 368-372, May 2003.

  107. K.W. Ang, W.A. Krzymien, "Performance of the Multi-Stage Variable Group Hybrid Interference Cancellation Scheme with Timing and Phase Errors", IEEE 57th Vehicular Technology Conference (VTC2003-spring), Jeju, Korea, pp. 1904-1909, April 2003.

  108. R. Novak, W.A. Krzymien, "SS-OFDM-F/TA System Packet Size and Structure for High Mobility Cellular Environments", IEEE 57th Vehicular Technology Conference (VTC2003-spring), Jeju, Korea, pp. 1438-1444, April 2003.

  109. D.J. Mazzarese and W.A. Krzymien, "High Throughput Downlink Cellular Packet Data Access with Multiple Antennas and Multiuser Diversity", IEEE 57th Vehicular Technology Conference (VTC2003-spring), Jeju, Korea, pp. 1079-1083, April 2003.

  110. G.G. Messier, W.A. Krzymien, "A Coloured Gaussian Model for CDMA Forward Link In-Cell Interference", IEEE 57th Vehicular Technology Conference (VTC2003-Spring), Jeju, Korea, Vol. 3, pp. 2052-2056, April 2003.

  111. R. Hang, W.A. Krzymien, 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, pp. 162-174, January 2003.

  112. G.G. Messier, W.A. Krzymien, "Improved Forward Link Error Correction for CDMA Systems with Space Time Transmit Diversity", IEEE Global Telecommunications Conference (Globecom2002), Taipei, Taiwan, Vol. 1, pp.992-996, November 2002.

  113. Robert Novak, Witold Krzymien, "An Adaptive Spread Spectrum OFDM Packet Data System with Two Dimensional Radio Resource Allocation: Performance in Low-mobility Environments", IEEE International Symposium of Wireless Personal Multimedia Communications 2002 (WPMC'02), Honolulu, Hawaii, pp. 163-167, October 2002.

  114. Robert C. Elliott, Witold A. Krzymien, "Scheduling Algorithms for the cdma2000 Packet Data Evolution", 2002 IEEE Semi-Annual Vehicular Technology Conference (VTC2002-Fall), Vancouver, BC, Vol. 1, pp. 304-310, October 2002.

  115. G.G. Messier, W.A. Krzymien, "Improving Convolutional and Turbo Code Performance on the CDMA Forward Link", IEEE 7th International Symposium on Spread Spectrum Techniques and Applications, Prague, pp. 29-33, September 2-5, 2002.

  116. R. Tanner, W. Krzymien, "A Comparison of Fading Channel State Prediction Techniques", Wireless 2002 Proceedings, Calgary, Alberta, pp. 312-317, July 8-10, 2002.

  117. G. Li, I.J. Fair, W.A. Krzymien, "Low Density Parity Check Codes for Space-Time Wireless Transmission", Wireless 2002, Calgary, AB, pp. 76-82, July 8-10, 2002.

  118. Geoffrey G. Messier and Witold A. Krzymien, "Improving Convolutional Code Performance on the CDMA Forward Link", Virginia Tech/MPRG Symposium on Wireless Personal Communications, Blacksburg, VA, pp. 163-167, June 5-7, 2002.

  119. Songsong Sun, Witold Krzymien, Qiang Shen, Bahman Darian, "Rapid Access Protocols for Discontinuous Transmission", Wireless Personal Communications - An International Journal, Vol. 21, No. 2, pp. 201-218, May 2002.

  120. C.H. Rentel, W.A. Krzymien, B. Darian, V. Vanghi, R. Elliott, "Comparable Forward Link Traffic Channel Performance Evaluation of HDR and 1XTREME Systems", IEEE Vehicular Technology Conference (Spring 2002), Birmingham, AL, USA, pp. 160-164, May 6-9, 2002.

  121. Laura Choy Lai Fun (supervisors: Dr. Witold A. Krzymien and Dr. Ivan Fair), "Turbo Codes for Advanced Wireless Access Systems", M.Sc. Thesis, Department of Electrical and Computer Engineering, University of Alberta, January 31, 2002.

  122. M. Yavuz, D. Paranchych, G. Wu, G. Li, W.A. Krzymien, "Performance Improvement of the HDR System Due to Hybrid ARQ", Semi-Annual Vehicular Technology Conference (VTC 2001-Fall), Atlantic City, NJ, pp 2192-2196, October 2001.

  123. R. Novak, W. Krzymien, "A Downlink SS-OFDM-F/TA Packet Data System Employing Multi-user Diversity", Proceedings of the Third International Workshop on Multi-Carrier Spread-Spectrum (MCSS 2001), Oberpfaffenhofen, Germany, pp. 181-190, September 2001.

  124. G.G. Messier, J.S. Nielson, W.A. Krzymien, "CDMA Forward Link Performance Evaluation Using Propagation Measurements", IEEE 2001 International Conference on Communications Proceedings, Helsinki, Finland, #CR1566, June 2001.

  125. Geoff Messier, Witold Krzymien, John Nielsen, "Impact of Propagation Environment and Transmit Diversity on CDMA Forward Link Performance", Int'l Workshop on Wireless Communications & Networking: 3G and Beyond, Istanbul, Turkey, May 2001.

  126. G.G. Messier, W.A. Krzymien, "An Indoor IS-2000 Transmit Diversity Evaluation using Propagation Measurements", IEEE VTS 53rd Vehicular Technology Conference, Spring 2001, Rhodes, Greece, #P764, May 2001.

  127. Songsong Sun, Witold A. Krzymien, "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, pp 16-29, January/February 2001.

  128. Kay Wee Ang and Witold A. Krzymien, "Effects of Different Configurations of RAKE Receivers on the Performance of an Interference Cancellation Scheme in Frequency Selective Fading Channels", 7th IEEE International Conference on Communication Systems (ICCS'00), Singapore, November 2000.

  129. Stefan Kaiser, Witold A. Krzymien, Khaled 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, pp. 605-610, November-December, 2000.

  130. Lauro F. Choy, Ivan J. Fair, Witold A. Krzymien, "Complexity-Performance Trade-offs in Turbo Codes for IMT-2000", IEEE Vehicular Technology Conference (VTC 2000-Fall), Boston, MA, 4.6.2.4, pp. 2568-2575, September 2000.

  131. Momin Jamil, Witold Krzymien, Danie van Wyk, "Performance Analysis of Constant Envelope Quadriphase Sequences for CDMA", Proceedings of the IEEE 6th International Symposium on Spread Spectrum Techniques & Applications (ISSSTA 2000), pp. 212-215, September 6-8, 2000.

  132. Laura Choy, Witold Krzymien, Ivan Fair, "Turbo Coding Options for IMT-2000", Wireless 2000, Calgary, AB, pp. 327-345, July 10-12, 2000.

  133. Robert Novak, Witold A. Krzymien, "A Cellular Multi-Service OFDM-CDMA System with Spatially-Dependent Rate Assignment", Wireless 2000, Calgary, AB, pp 448-459, July 10-12, 2000.

  134. Songson Sun, Witold A. Krzymien, Bahman Darian, "A New Efficient Contentionless Access Protocol for Packet Data Transmission in CDMA Systems", IEEE Vehicular Technology Conference 2000 (VTC 2000-Spring), Tokyo, Japan, 2.01.3 pp 36-40, May 2000.

  135. Stefan Kaiser and Witold A. Krzymien, "An Asynchronous Spread Spectrum Multi-Carrier Multiple Access System", Global Telecommunication Conference 1999 (GLOBECOM '99), Rio de Janeiro, Brazil, pp. 314-319, December 1999.

  136. L. Tomba, W.A. Krzymien, "An Analysis of the Effect of Chip Timing Jitter in MC-CDMA Systems", IEEE Transactions on Vehicular Technology, vol.48, issue 6, pp 1889-1898, November 1999.

  137. Kay Wee Ang and Witold A. Krzymien, "A Method of Limiting the Processing Delay of the Variable Group Hybrid Interference Cancellation Scheme for CMDA Systems", IEEE Vehicular Technology Conference (VTC'99-Fall), Amsterdam, The Netherlands, pp. 1648-1652, September 1999.

  138. Stefan Kaiser, Witold A. Krzymien, "Performance Tradeoffs in Asynchronous Spread Spectrum Multi-Carrier Multiple Access", 1999 Second International Workshop on Multi-Carrier Spread-Spectrum (MC-SS'99),entitled...Multi-Carrier Spread Spectrum & Related Topics, Oberpfaffenhofen, Germany, September 1999.

  139. Stefan Kaiser, Witold A. Krzymien, "Performance Tradeoffs in Asynchronous Spread Spectrum Multi-Carrier Multiple Access", Multi-Carrier Spread Spectrum & Related topics, September 1999.

  140. L. Tomba, W.A. Krzymien, "Sensitivity of the MC-CDMA Access Scheme to Carrier Phase Noise and Frequency Offset", IEEE Transactions on Vehicular Technology, Vol. 48, No. 5, pp. 1657-1665, September 1999.

  141. R. Krenz, W.A. Krzymien, "Algorithms for Forward Link Power Allocation for Packet Data Transmission in Wideband CDMA", VTC'99, Amsterdam, pp 2101 - 2106, September 1999.

  142. S. Kaiser, W.A. Krzymien, "Asynchronous Spread Spectrum Multi-Carrier Multiple Access System with Pilot Aided Channel Estimation", VTC'99, Amsterdam, pp 2701 - 2706, September 1999.

  143. Kay Wee Ang, Witold A. Krzymien, "An Improved Multi-Stage Variable Group Hybrid Multi-User Interference Cancellation Scheme for CMDA Systems", PIRMC'99, Osaka, Japan, September 1999.

  144. Zixiong Wang, Bruce F. Cockburn, Duncan G. Elliott, Witold A. Krzymien, "DSP-RAM: A Logic-Enhanced Memory Architecture for Communication Signal Processing", Proceedings 1999 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM'99), Victoria, Canada, pp. 475-478, August 1999.

  145. S. Kaiser, W.A. Krzymien, "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, pp. 399-406, July/August 1999.

  146. Kay Wee Ang, Witold A. Krzymien, "A Novel Variable Group Hybrid Interference Cancellation Scheme for CDMA Systems", ITC'99, Cheju, June 1999.

  147. Sun, Songsong (supervisor: Dr. Witold A. Krzymien), "High Data Rate Transmission in Multi-Service Code Division Multiple Access Wireless Communication Systems", Ph.D. Thesis, University of Alberta, Department of Electrical and Computer Engineering, Spring, 1999.

  148. Rafal Krenz and Witold Krzymien , "Forward Link Power Allocation in Multiservice DS-CDMA Wireless Systems", 3rd European Personal Mobile Communications Conference (EPMCC'99), Paris, France, pp. 381-386, March 1999.

  149. Qiang Shen and Witold A. Krzymien, "Optimum Power Assignment for Maximum Throughput in CDMA Personal Communication Systems with Integrated Voice/Data Traffic", Wireless Personal Communications, Vol. 1, No. 3, pp. 277-289, December 1998.

  150. Robert Hang (supervisors: Dr. Witold A. Krzymien and Dr. Charles L. Despins), "An Improved MAC Protocol for Reverse Link Data Transmission in Wideband DS-CDMA", M.Sc. Thesis, University of Alberta, Department of Electrical and Computer Engineering, October 1998.

  151. S. Sun, W. Krzymien, R. Krenz, A. Jalali, "Reliable Hybrid ARQ Data Transmission with Optimal Signal-to-Interference Ratio Assignment in CDMA PCS", Proceedings of the 1998 IEEE International Conference on Universal Personal Communications (ICUPC'98), pp. 599-604, Florence, Italy, October 5-9, 1998.

  152. S. Sun, W. Krzymien, A. Jalali, "Optimal Forward Link Power Allocation for Data Transmission in CDMA Systems", Proceedings of the 9th IEEE International Symposium on Personal, Indoor and Mobile Communications (PIMRC '98), pp. 848-852, Boston, USA, September 8-11, 1998.

  153. L. Tomba, W. Krzymien, "Comparison of Encoding/Detection Techniques for the REverse Link of an MC-CDMA Multiple Access Scheme", Proceedings of the 5th IEEE Internation Symposium on Spread Spectrum Techniques & Applications (ISSSTA'98), pp. 195-199, Sun City, South Africa, September 2-4, 1998.

  154. D. Liu, C.L. Despins, W.A. Krzymien, "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, pp. 257-273, August 1998.

  155. R. Krenz, W.A. Krzymien, A. Jalali, "Forward Link Design Issues in Multiservice CDMA Wireless Systems", International conference on Wireless Communications (Wireless '98), Calgary, AB, Canada, pp.128-137, July 6-8, 1998.

  156. R. Hang, W.A. Krzymien, C.L. Despins, "Performance of an Improved MAC Protocol for Reverse Link Short Packet Data Transmission in UMTS", Proceedings of the 1998 International Conference on Wireless Communications (Wireless '98), Calgary, Canada, pp. 379-397, July 6-8, 1998.

  157. R. Hang, W.A. Krzymien, 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, pp. 19-24, Rhodes, Greece, June 8-11, 1998.

  158. L. Tomba, W.A. Krzymien, "A Model for the Analysis of Timing Jitter in OFDM Systems", Proceedings of the 1998 IEEE International Conference on Communications (ICC'98), Atlanta, USA, pp. 1227-1231, June 7-11, 1998.

  159. S. Sun, W.A. Krzymien, "Call Admission Policies and Capacity Analysis of a Multi-Service CDMA Personal Communication System with Continuous and Discontinuous Transmission", Proceedings of the 1998 IEEE Vehicular Technology Conference (VTC'98), Ottawa, Canada, pp. 218-223, May 18-21, 1998.

  160. L. Tomba, W.A. Krzymien, "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), Ottawa, Canada, pp. 958-962, May 18-21, 1998.

  161. S. Sun, W.A. Krzymien, "Call Admission Policies and Capacity Analysis of a Multi-Service CDMA Personal Communication System with Continuous and Discontinuous Transmission", 48th IEEE Vehicular Technology Conference, VTC '98, vol.1, pp 218-223, May 1998.

  162. A.C.K. Soong, W.A. Krzymien, "Reference Symbol Assisted Multi-Stage Successive Interference Cancellation for CDMA Wireless Communications", Wireless Personal Communications, Vol. 7, No. 1, pp. 1-23, May 1998.

  163. S. Sun, W.A. Krzymien, A. Jalali, Q. Shen, "Performance Comparison of Two Medium Access Control Schemes for Packet Data Traffic in DS-CDMA Personal Communication Systems", IEEE Global Telecommunications Conference (Globecom '97/CTMC'97), pp. 185-189, Phoenix, AZ, USA, November 3-8, 1997.

  164. William King Kwong Kong (supervisor: Dr. Witold A. Krzymien, co-supervisor: Dr. Paul A. Goud), "Performance of Adaptive Antenna Array Algorithms on the IS-95 Reverse Link ", M.Sc. Thesis, University of Alberta, Department of Electrical Engineering, October 1997 .

  165. A.C.K. Soong, W.A. Krzymien, "Effect of Antenna Diversity on Performance of Reference Symbol Assisted Interference Cancellation in CDMA Wireless Systems", 1997 IEEE 6th Internation Conference on Universal Personal Communications (ICUPC '97), San Diego, CA, USA, Volume 1, pp 202-207, October 12-16, 1997.

  166. S. Sun, W.A. Krzymien, "Matched Filter Based Synchronizer Design for Rapid Synchronization of Packet Data Transmissions in DS-CDMA Personal Communications Systems", Proceedings of 1997 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing, Victoria, BC, pp. 5-8, August 20-22, 1997.

  167. William K.K. Kong, Witold A. Krzymien, "Performance of Adaptive Antenna Array Algorithms for the IS-95 Reverse Link", Proceedings of Wireless '97, Calgary, AB, Vol. 2, pp. 480-497, July 9-11, 1997.

  168. Terry Renneburg, Witold A. Krzymien, "A Wavelet Based Multi-Rate Modulation Scheme for Optimization of a Broadcast Meteor Scatter Communication Channel", Proceedings of Wireless '97, Calgary, AB, Vol. 1, pp. 188-205, July 9-11, 1997.

  169. D. Lui, C.L. Despius, W.A. Krzymien, "Efficient & Accurate DS-SSMA Deterministic Signature Sequence Performance Evaluation over Wireless Fading Channels", Proceedings of IEEE 1997 International Conference on Communications (ICC '97), Montreal, Quebec, Vol. 1, pp. 339 - 343, June 8 - 12. 1997.

  170. A. Soong, W.A. Krzymien, "Performance of a Reference Symbol Assisted Multi-Stage Successive Interference Cancelling Receiver with Quadriphase Spreading", Proceedings of IEEE 47th Vehicular Technology Conference 1997 (VTC '97), Phoenix, AZ, Vol. 2, pp. 460-464, May 4-7, 1997.

  171. F. Fekri, W. Krzymien, A. Sesay, "Envelope Correlation of Wide-band Signals in Rayleigh Fading and its Implications for Frequency Diversity", IEEE VTC'97, Phoenix, AZ, USA, pp. 72-76, May 4-7, 1997.

  172. Anthony C. K. Soong (supervisor: Dr. Witold A. Krzymien), "Reference Symbol Assisted Multistage Successive Interference Cancelling Receiver for Code Division Multiple Access Wireless Communication Systems", Ph.D. Thesis, University of Alberta, Department of Electrical and Computer Engineering, Spring 1997.

  173. Luciano Tomba and Witold A. Krzymien, "An OFDM/SFH-CDMA Transmission Scheme for the Uplink", Proceedings of First International workshop on Multi-Carrier Spread-Spectrum, Oberpfaffenhofen, Germany, April 24 - 25, 1997.

  174. L. Tomba, W. Krzymien, "Reverse Link Performance of a Coded OFDM/SFH-CDMA Transmission Scheme", Proceedings of First IEEE Workshop on Signal Processing Advances in Wireless Communications (SPAWC '97), Paris, France, pp. 241 - 244, April 16-18, 1997.

  175. L. Tomba, W. Krzymien, "Reverse Link Performance of a Coded OFDM/SFH-CDMA Transmission Scheme", Proceedings of First IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC'97, Paris, France, pp. 241-244, April 1997.

  176. Q. Shen, W. Krzymien, "Power Assignment in CDMA Personal Communication Systems with Integrated Voice/Data Traffic", 1996 IEEE Global Telecommunications Conference (Globecom '96), Communications Theory Mini Conference Record, Queen Elizabeth II Conference Centre, Westminster, London, pp. 168-172, November 18-22, 1996.

  177. A.C.K. Soong, W.A. Krzymien, "A Novel CDMA Multi-User Interference Cancellation Receiver with Reference Symbol Aided Estimation of Channel Parameters", IEEE Journal on Selected Areas in Communications, Vol. 14, No. 8, pp. 1536-1547, October 8, 1996.

  178. L. Tomba, W.A. Krzymien, "Performance Enhancement of Multicarrier CDMA Systems Impaired by Chip Timing Jitter", Proceedings of the IEEE Fourth International Symposium on Spread Spectrum Techniques & Applications (ISSSTA '96), vol. 1/3, pp. 136-140, Electoral Palace, Mainz, Germany, September 22-25, 1996.

  179. L. Tomba, W.A. Krzymien, "Downlink Detection Schemes for MC-CDMA Systems in Indoor Environments", IEICE Transaction on Communications, Vol. E79-B, No. 9, pp. 1351-1360, September 1996.

  180. Q. Shen, W.A. Krzymien, "The Effect of Fading on the Erlang Capacity of the IS-95 CDMA Cellular System", 1996 IEEE International Conference on Communications (ICC '96), Dallas, TX, Vol. 3, pp. 1829-1833, June 23 - 27, 1996.

  181. L. Tomba, W.A. Krzymien, "Effect of Carrier Phase Noise and Frequency Offset on the Performance of Multicarrier CDMA Systems", 1996 IEEE International Conference on Communications (ICC '96), Dallas, TX, Vol. 3, pp. 1513-1517, June 23 - 27, 1996.

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

  183. A.C.K. Soong, W.A. Krzymien, "Robustness of the Reference Symbol Assisted Multistage Successive Interference Cancelling Receiver with Imperfect Parameter Estimates", Proceedings of IEEE VTS 46th Vehicular Technology Conference, Atlanta, GA, Vol. 2, pp. 676-680, April 28-May 1, 1996.

  184. Q. Shen, W.A. Krzymien, "Performance Improvement of Closed-Loop Power Control in CDMA Cellular Mobile Communication Systems", Proceedings of IEEE VTS 46th Vehicular Technology Conference, Atlanta, GA, Vol. 1, pp. 56-60, April 28-May 1, 1996.

  185. W.A. Krzymien, A. Jalali, P. Mermelstein, "Rapid Acquisition Algorithms for Synchronization of Bursty Transmission of CDMA Microcellular and Personal Wireless Systems", IEEE Journal on Selected Areas in Communications, Vol. 14, No. 3, pp. 570-579, April 1996.

  186. A.C.K. Soong, W.A. Krzymien, "Performance of a Reference Symbol Assisted Multistage Successive Interference Cancelling Receiver in a Multi-Cell CDMA Wireless Systems", GLOBECOM '95,Conference Record Communication Theory Mini-Conference, Singapore, Vol. 1 of 1, pp. 152-156, November 1995.

  187. A.C.K. Soong, W.A. Krzymien, "Performance Issues in Successive Interference Cancellation with Reference Symbol Assisted Channel Estimation", Proceedings of the Fourth 1995 IEEE International Conference on Universal Personal Communications (ICUPC '95), Meiji Kinenkan, Tokyo, Japan, pp. 158-162, November 1995.

  188. B.S. Yeh, W.A. Krzymien, P.A. Goud, "Diversity Combining and Decision Feedback Equalization for Indoor Wireless Systems Using Constant Envelope Modulation", Proceedings of Wireless '95 Conference, Calgary, AB., Vol. I, D-2, pp. 209-217, July 13, 1995.

  189. Greg J. Erker, David E. Dodds and Witold A Krzymien, "ISDN Loop Extension Using a Mid Span Amplifier", International Journal of Communication Systems (John Wiley & Sons), Vol. 8, No. 3, pp. 219-224, May / June 1995.

  190. A.C.K. Soong, W.A. Krzymien, "CDMA Multi-User Interference Cancellation with Reference Symbol Aided Estimation of Channel Parameters", Proceedings of the IEEE Pacific Rim Conference, pp. 429-432, Victoria, BC, May 1995.

  191. W.D. Grover, W.A. Krzymien, 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, pp. 244-252, May 1995.

  192. Greg J. Erker, David E. Dodds, W.A. Krzymien, "Digital Loop Extension Using Mid Span Amplification", 1995 IEEE International Symposium on Circuits & Systems (ISCAS '95), Seattle, WA, pp 1452-1455, April 1995.

  193. M.Y. Cheung, W.D. Grover, W.A. Krzymien, "Combined Framing and Error Correction Coding for the DS3 Signal Format", IEEE Transactions on Communications, Vol. 43, Number 2/3/4/, Part III of Three Parts, pp. 1365-1374, February/March/April 1995.

  194. G.J. Erker, D.E. Dodds, W.A. Krzymien, "ISDN Loop Extension Using a Mid Span Amplifier", International Journal of Communication Systems, Vol. 8, 219-224 (1995).

  195. W. Zhuang, W.A. Krzymien, P.A. Goud, "Trellis-Coded CPFSK and Soft-Decision Feedback Equalization for Micro-Cellular Wireless Applications", Wireless Personal Communications - An International Journal, pp. 271-285, 1995.

  196. W. Zhuang, W.A. Krzymien, P.A. Goud, "Adaptive Channel Precoding for Slowly Fading Channels", Proceedings of Wireless Computer Networks, Personal, Indoor, and Mobile Radio Communications, PIMRC '94, pp. 660-664, September 18-22, 1994.

  197. W.A. Krzymien, A. Jalali, P. Mermelstein, "An Improved Acquisition Algorithm for the Synchronization of CDMA Personal Wireless Systems", Proceedings of the 5th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC '94), The Netherlands, pp. 444-448, September 18-22, 1994.

  198. W. Zhuang, W.A. Krzymien and P.A. Goud, "Adaptive Channel Precoding for Personal Communications", Electronics Letters, Vol. 30, No. 19, pp. 1570-1571, September 15, 1994.

  199. W.A. Krzymien, A. Jalali, P. Mermelstein, "A Rapid Initial Synchronization Algorithm for CDMA Microcellular Systems", Proceedings of Wireless '94 Conference, Calgary, AB., pp. 587-596, July 1994.

  200. W. Zhuang, P.A. Goud, W.A. Krzymien, "Adaptive Soft Decision Feedback Equalization for Indoor Radio Communications Using Trellis-Coded CPFSK", Proceedings of the 44th IEEE Vehicular Technology Conference, pp. 1364-1368, Stockholm, Sweden, June 8-10, 1994.

  201. R.G. Kusyk, W.A. Krzymien, 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, pp. 2036-2050, February/March, 1994.

  202. Zhao Huang (supervisor: Dr. Witold A. Krzymien), "GMSK Performance on Indoor Radio Channels", M.Sc. Thesis, University of Alberta, Department of Electrical Engineering, Fall 1993.

  203. K.P. Benterud, W.A. Krzymien, W.D. Grover, "Quasi-orthogonal Subcarrier Multiplexing for High-capacity Optical Data Links", Canadian Journal of Electrical and Computer Engineering, Vol. 18, No. 4, pp. 159-169, October 1993.

  204. W. Zhuang, W.A. Krzymien, P.A. Goud, "Trellis-Coded CPFSK for Micro-Cellular Wireless Applications", Proceedings of Wireless '93 Conference, Calgary, AB, pp. 681-688, July 1993.

  205. W.D. Grover, W.A. Krzymien, J.C. Chin, "Background Data Service for Cellular Mobile Radio", Proceedings of 43rd IEEE Vehicular Technology Conference, Secaucus, NJ, pp. 766-769, May 1993.

  206. R. Sharma, W.D. Grover, W.A. Krzymien, "Forward Error Control (FEC) - Assisted Adaptive Equalization for Digital Cellular Mobile Radio", IEEE Trans. on Vehicular Technology, Vol. 42, No. 1, pp. 94-102, February 1993.

  207. D.E. Dodds, G.J. Erker, W.A. Krzymien, "ISDN Loop Extension Using a Negative Impedance Amplifier", Proceedings of the Canadian Conference on Electrical and Computer Engineering (CCECE '92), Toronto, ON, paper WM10.8.1, Vol II, September 13-16, 1992.

  208. Richard Tsz Shiu Tse (supervisor: Dr. Witold A. Krzymien), "Spread Spectrum Multiple Access with Orthogonal Convolutional Codes for Indoor Digital Radio", M.Sc. Thesis, University of Alberta, Department of Electrical Engineering, Fall 1992.

  209. R. Tse, W. Krzymien, "Spread Spectrum Multiple Access with Orthogonal Convolutional Codes for Indoor Digital Radio", Proceedings of Canadian Conference on Electrical and Computer Engineering (CCECE '92), Toronto, Ontario, paper TM2.16.1, Vol. 1, September 13-16, 1992.

  210. W. Krzymien, T.D. Bilodeau, "Performance Evaluation Study of Signal Design and Equalization Options for High-Bit-Rate Digital Subscriber Line Transceivers", International Journal of Digital and Analog Communication Systems, Vol 5, pp. 15-28, 1992.

  211. T.D. Bilodeau, W.A. Krzymien, "A Simulation Study of Trellis-Coded Transceivers For High-Bit Rate Digital Subscriber Loops", IEE Proceedings-1, Vol. 138, No.6, pp. 503-510, December 1991.

  212. T.E. Moore, W.A. Krzymien, "A Simulation Study of DS-3 Waiting Time Jitter Accumulation in SONET", Proceedings of IEEE GLOBECOM '91, Phoenix, Arizona, Vol. III, pp. 1855-1859, December 1991.

  213. Man Yau Cheung (supervisors: Dr. W.A. Krzymien and Dr. W.D. Grover), "Combined Framing and FEC Coding for Digital Multiplexed Signals", MSc Thesis, Department of Electrical Engineering, University of Alberta, October 1991.

  214. Rohit Sharma (supervisors: Dr. Witold A. Krzymien and Dr. Wayne D. Grover), "Forward-Error-Control Assisted Adaptive Equalization in Digital Mobile Radio", M.Sc. Thesis, University of Alberta, Department of Electrical Engineering, Fall 1991.

  215. T.E. Moore, W.A. Krzymien, "A Waiting Time Jitter Accumulation Model", Canadian Conference on Electrical and Computer Engineering, Quebec City, Quebec, Vol. II, 50.4.1, September 1991.

  216. R. Sharma, W.D. Grover, W.A. Krzymien, "FEC-Assisted Adaptive Equalization in Digital Mobile Radio", Canadian Conference on Electrical and Computer Engineering, Quebec City, Quebec, Vol. II, 58.3.1, September 1991.

  217. W.D. Grover, W.A. Krzymien, A. Shen, "Simulation and Experimental Studies on the Concept of a Rate-Adaptive Digital Subscriber Loop (RA-DSL)", IEEE J-SAC Special Issue on HDSL, Vol. 9, No. 6, pp. 941-950, August 1991.

  218. M.Y. Cheung, W.D. Grover, W.A. Krzymien, "Combined Framing & FEC Coding for Multiplexed Signals", IEEE Pacific Rim Conference on Communications, Computers and Signal Processing '91, Victoria, BC, pp. 205-210, May 1991.

  219. Kevin P. Benterud (supervisors: Dr. W.A. Krzymien and Dr. W.D. Grover), "A High Speed Optical Data Bus Using Orthogonal Subcarrier Multiplexing ", MSc Thesis, Department of Electrical Engineering, University of Alberta, April 1991.

  220. I.J. Fair, W.D. Grover, W.A. Krzymien, 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, pp. 289-297, February 1991.

  221. W.D. Grover, W.A. Krzymien, "A Proposal to use the Justification Bits of a DS-3 Stream for Signalling", IEEE Transactions of Communications, Vol. 38, No. 10, pp. 1657-1658, October 1990.

  222. T.E. Moore, R.G. Kusyk, W.A. Krzymien, "Waiting Time Jitter Results for a Reduced Complexity SONET Interface Circuit", Electronics Letters, Vol. 26, No. 22, pp. 1884-1886, October 1990.

  223. D.E. Dodds, W.A. Krzymien, T.D. Bilodeau, "Improved Hybrid Balance for U Interface ISDN Basic Access", Canadian Conference on Electrical and Computer Engineering, Ottawa, Vol. II, pp. 71.1.1-71.1.4, September 1990.

  224. R.G. Kusyk, W.A. Krzymien, T.E. Moore, "Reduction of DS-1 Jitter caused by SONET VT1.5 Pointer Adjustments", Canadian Conference on Electrical and Computer Engineering, Ottawa, Ontario, Vol. II, pp. 71.2.1-71.2.4, September 1990.

  225. Richard Glenn Kusyk (supervisor: Dr. Witold A. Krzymien), "Techniques for the Reduction of DS-1 Jitter Caused by SONET VT1.5 Pointer Adjustments", M.Sc. Thesis, University of Alberta, Department of Electrical Engineering, August 1990.

  226. K.P. Benterud, W.D. Grover, W.A. Krzymien, "A Novel Application of Lightwave Subcarrier Multiplexing to an Ultra-High Bit Rate Short Distance Data Transfer Problem", Proceedings of the Queen`s 15th Biennial Symposium on Communications, pp. 256-259, June 1990.

  227. Young-Fei Shen (supervisor: Dr. Witold A. Krzymien), "Evaluation of Digital Subscriber Loop Capabilities for Bit Rate Adaptive Transmission ", M.Sc. Thesis, University of Alberta, Department of Electrical Engineering, Spring 1990.

  228. Thomas D. Bilodeau (supervisor: Dr. Witold A. Krzymien), "Trellis Coded Modulation for High Bit Rate Digital Subscriber Loops", MSc Thesis, University of Alberta, Department of Electrical Engineering, April 1990.

  229. R.G. Kusyk, T.E. Moore, W.A. Krzymien, "Spectral Analysis of Waiting Time Jitter in the Presence of Stuff Threshold Modulation", Electronics Letters, Vol. 26, No. 8, pp. 526-528, April 1990.

  230. W.D. Grover, W.A. Krzymien, T. Fong, A. Shen, J.P. Dubuc, "Turbo-Loop: A Rate-Adaptive Digital Subscriber Loop (RA-DSL) for Advanced ISDN Access Applications", Proceedings of GLOBECOM `89, Dallas, TX, pp. 1945-1951, November 1989.

  231. J.J. Brown, W.A. Krzymien, "A Modified ISDN Network Layer Protocol Suitable for Implementation in Hardware", Information Systems & Operational Research, Vol. 27, No. 4, pp. 476-473, November 1989.

  232. T.D. Bilodeau and W.A. Krzymien, "A Simulation Study of Trellis-Coded Transceivers for Digital Subscriber Loop", Canadian Conference on Electrical and Computer Engineering, Montreal, Quebec, Vol. I. pp. 568-571, September 1989.

  233. Ivan J. Fair (supervisors: Dr. R. Ian MacDonald and Dr. Witold A. Krzymien), "Guide Scrambling: A New Line Coding Technique for Optical Fiber Communication Systems", MSc Thesis, University of Alberta, Department of Electrical Engineering, July 1989.

  234. T.E. Moore, J.J. Brown, W.A. Krzymien, "Jitter Analysis for DS-3 to SONET Interface Circuit with Reduced Complexity", IEEE Pacific Rim Conference on Communications, Computers and Signal Processing '89, Victoria, BC, pp. 435-438, June 1989.

  235. A. Shen, W.D. Grover, W.A. Krzymien, "Simulation and Experimental Studies of a Rate-Adaptive Digital Subscriber Loop (RA-DSL) Transmission Method", IEEE Pacific Rim Conference on Communications, Computers and Signal Processing '89, Victoria, BC, pp. 36-39, June 1989.

  236. Witold A. Krzymien, "Transmission Performance Analysis of a New Class of Line Codes for Optical Fiber Systems", IEEE Transactions on Communications, Vol.37, No.4, pp 402-404, April 1989.

  237. J.P. Dubuc, W.A. Krzymien, "Crosstalk Characteristics of a Subscriber Loop Modelling Facility for ISDN Studies", Proceedings of the Canadian Conference on Electrical and Computer Engineering, Vancouver, BC, pp. 502-505, November 1988.

  238. Myron Borys (supervisor: Dr. Witold Krzymien), "Digital Implementation of a Transmit Line Build-Out Circuit for the DSX-1 Interface", MSc Thesis, University of Alberta, Department of Electrical Engineering, September 1988.

  239. W.D. Grover, W.A. Krzymien, "A Modified Zero-Forcing Control Strategy For Automatic Time-Domain Equalizers In Generalized Partial Response Digital Radio", Proceedings of Queen's Fourteenth Biennial Symposium on Communications, Kingston, Ontario, May 1988.

  240. M.S. Borys, W.A. Krzymien, W.D. Grover, "Digital Implementation of a Transmit Line Build-Out Circuit for the DSX-1 Interface", Proceedings of IEEE WESCANEX '88 Conference, Saskatoon, SK, pp. 55-59, May 1988.

  241. J.J. Brown, W.A. Krzymien, "A Subset Of The ISDN Network Layer Protocol Suitable For Implementation In Hardware", Proceedings of IEEE Infocom'88, pp. 1065-1071, March 1988.

  242. W.A. Krzymien, "A New Class of Balanced Line Codes for Optical Fibre Transmission Systems", Proceedings of the IEEE Pacific Rim Conference on Communications, Computers and Signal Processing, Victoria, BC, pp. 444-446, June 1987.



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