Publications
Book Chapters
  1. W. Choi and J. G. Andrews, "Theoretical Limits of Cellular Systems with Distributed Antennas", invited chapter for Distributed Antenna Systems: Open Architecture for Future Wireless Communications, Auerbach Publications, Talyor & Francis Group, New York, 2007.
Journal Publications
  1. T. W. Ban, W. Choi, and D. K. Sung, "Capacity and energy efficiency of multiuser spectrum sharing systems with opportunistic scheduling," to appear, IEEE Trans. on Wireless Communications.
  2. T. W. Ban, W. Choi, B. C. Jung, and D. K. Sung, "A cooperative phase steering scheme in multi-relay node environments," IEEE Trans. on Wireless Communications, vol. 8, no.1, Jan. 2009.
  3. T. W. Ban, W. Choi, B. C. Jung, and D. K. Sung, "Multiuser diversity in a spectrum sharing system," IEEE Trans. on Wireless Communications, vol. 8, no. 1, Jan 2009.
  4. M. S. Kang, B. C. Jung, D. K. Sung, and W. Choi, "A pre-whitening scheme in a MIMO-based spectrum sharing environment," IEEE Commun. Letters, vol. 12, no.11, pp.831-833, Nov. 2008.
  5. E. Choi, W. Choi, J. G. Andrews, and B. F. Womack, "Power loading using order mapping in OFDM systems with limited feedback," IEEE Signal Processing Letter, vol. 15, pp. 545-548, July 2008 .
  6. W. Choi and J. G. Andrews, "The capacity gain from intercell scheduling in multi-antenna systems," IEEE Trans. on Wireless Communications, vol. 7, no.2, pp. 714-725, Feb. 2008.
  7. J. G. Andrews, W. Choi, and R. W. Heath, Jr., "Overcoming interference in spatial multiplexing MIMO cellular networks," IEEE Wireless Communications Magazine, vol. 14, no. 6, pp. 95-104, Dec. 2007.
  8. W. Choi, A. Forenza, J. G. Andrews, and R. W. Heath, Jr., "Opportunistic space division multiple access with beam selection," IEEE Trans. on Communications, vol. 55, no.12, pp. 2371-2380, Dec. 2007.
  9. W. Choi, J. G. Andrews, and R. W. Heath, Jr., "Multiuser antenna partitioning for cellular MIMO-CDMA systems," IEEE Trans. on Vehicular Technology, vol. 56, no. 5, pp. 2448-2456, Sept. 2007.
  10. W. Choi and J. G. Andrews, "Improved performance analysis for maximal ratio combining in asynchronous CDMA channels", IEEE Trans. on Wireless Communications, vol. 6, no. 9, pp.3297-3305, Sept. 2007.
  11. W. Choi and J. G. Andrews, "Spatial multiplexing in cellular MIMO-CDMA systems with linear receivers: Outage probability and capacity," IEEE Trans. on Wireless Communications, vol. 6, no. 7, pp. 2612-2621, July 2007.
  12. W. Choi and J. G. Andrews, "Downlink performance and capacity of distributed antenna systems in a multicell environment," IEEE Trans. on Wireless Communications, vol. 6, no. 1, pp. 69-73, Jan. 2007.
  13. W. Choi and J. G. Andrews, "Generalized performance analysis of a delay diversity receiver in asynchronous CDMA channels", IEEE Trans. on Wireless Communications, vol. 4, no. 5, pp.2057-2063, Sep. 2005.
  14. W. Choi, C. H. Yi, J. Y. Kim and D. I. Kim, "A new base station receiver for increasing diversity order in a cellular CDMA system," IEEE Trans. on Communications, vol. 52, no. 11, pp.1851-1856, Nov. 2004.
  15. W. Choi and J. Y. Kim, "Performance of a multiuser detector with multicarrier transmission for a DS/CDMA system," Wireless Personal Communications, Springer, vol. 22, no. 1, pp. 71-87, July 2002.
  16. W. Choi and J. Y. Kim, "Joint Erlang capacity of DS/CDMA forward link based on capacity sharing algorithm," IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences (as an invited paper), vol. E84-A, no.6, pp.1406-1412, June 2001.
  17. W. Choi and J. Y. Kim, "Forward link capacity of a DS/CDMA system with mixed multirate sources," IEEE Trans. on Vehicular Technology, vol.50, no.3, pp.737-749, May 2001.
  18. W. Choi, B. Y. Cho, and T. W. Ban, "Automatic on-off switching repeaters for DS/CDMA reverse link capacity improvement," IEEE Communications Letters, vol.5, no. 4, pp. 138-141, April 2001.
Conference Publications
  1. W. Choi, J. Hong, D. I. Kim, and B. H. Kim, "An error detection aided GSC/MRC switching scheme in AF based relay communications," in Proc. of IEEE Vehicular Technology Conference (VTC), Barcelona, Apr. 26-29, 2009.
  2. T. Ban, D. Sung, B. Jung, and W. Choi, "Capacity analysis of an opportunistic scheduling system in a spectrum sharing environment," in Proc. of IEEE Global Communications Conference (Globecom), pp. - , New Orleans, LA, Nov. 30 - Dec. 4, 2008.
  3. E. H. Choi, W. Choi, and B. F. Womack, "An enhanced multimode power loading algorithm applicable to large dimensional OFDM systems," in Proc. of Military Communications Conference (MILCOM), San Diego, CA, Nov. 17-19, 2008.
  4. S. Kim, W. Choi, Y. Choi, J. Lee, and Y. Han, "Capacity Improvement of Cellular Relay Networks by Spectrum Agility," in Proc. of IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), pp. - , Cannes, France, Sept. 15-18, 2008.
  5. S. Kim, W. Choi, Y. Choi, J. Lee, Y. Han, and I. Lee, "Downlink Performance Analysis of Cognitive Radio based Cellular Relay Networks," in Proc. of IEEE International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom), pp. 1-6 , Singapore, May 15-17, 2008.
  6. H. Kim, W. Choi, and H. Park, "Effects of antenna correlation on spatial diversity and multiuser diversity," IEEE Wireless Comm. and Networking Conference (WCNC), pp.65 -69 , Las Vegas, NV, Mar. 31 - Apr. 3, 2008.
  7. B. Jung, T. Ban, W. Choi, and D. Sung, ``Capacity analysis of opportunistic feedback schemes in OFDMA systems," in Proc. of IEEE International Symposium on Communications and Information Technologies (ISCIT), pp. 203-208, Sydney, Oct. 17-19, 2007.
  8. N. Himayat, S. Talwar, W. Choi, et al., ``System performance of transmit diversity schemes for interference-limited cellular systems," in Proc. of IEEE Global Communications Conference (Globecom), pp.4215-4220, Washington, D.C., Nov. 26-30, 2007.
  9. T. Ban, B. Jung, D. Sung, and W. Choi, ``Performance analysis of two relay selection schemes for cooperative diversity," in Proc. of IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), pp. 1-5, Athens, Greece, Sept. 3-7, 2007.
  10. W. Choi, N. Himayat, S. Talwar, et al., "The interactions between spatial diversity and multiuser diversity in an interference limited environment", in Proc. of IEEE Wireless Comm. and Networking Conference (WCNC), Hong Kong, pp. 1796-1801, Mar. 11-15, 2007.
  11. W. Choi, N. Himayat, S. Talwar, and M. Ho, "The effects of co-channel interference on spatial diversity techniques", in Proc. of IEEE Wireless Comm. and Networking Conference (WCNC), pp. 1938-1943, Hong Kong, Mar. 11-15, 2007.
  12. E.H. Choi, W. Choi, and B. F. Womack, "Random waterfilling in a clustered multiuser OFDM system," in Proc. of Military Communications Conference(MILCOM), pp. 1-6, Washington, D.C., Oct. 23-25, 2006.
  13. W. Choi, A. Forenza, J. G. Andrews, and R. W. Heath, Jr., "Capacity of opportunistic space division multiple access with beam selection," in Proc. of IEEE Global Communications Conference (Globecom), pp. 1- 5, San Francisco, CA, Nov. 27- Dec. 1, 2006.
  14. W. Choi and J. G. Andrews, "The capacity gain from base station cooperative scheduling in a MIMO DPC cellular system," in Proc. of IEEE International Symposium on Information Theory (ISIT), pp. 1224-1228, Seattle, WA, July 9-14, 2006.
  15. W. Choi and J. G. Andrews, "Base station cooperatively scheduled transmission in a cellular MIMO TDMA System," in Proc. of Conference on Information Sciences and Systems (CISS), pp. 105-110, Princeton, NJ, Mar. 22-24, 2006.
  16. W. Choi, J. G. Andrews, and R. W. Heath, Jr., "Antenna partitioning for Multiuser MIMO-CDMA," in Proc. of IEEE Global Communications Conference (Globecom), pp. 1535-1539, St-Louis, Mo, Nov. 28 - Dec. 2 2005.
  17. W. Choi, J. G. Andrews and C. Yi, "The capacity of multicellular distributed antenna networks," in Proc. of IEEE International conference on wireless networks, communications and mobile computing (WNCMC), pp. 1337-1342, Hawaii, June 13-16, 2005.
  18. W. Choi and J. G. Andrews, "On the spatial multiplexing in Cellular MIMO CDMA systems with linear receivers," in Proc. of IEEE International Conference on Communications (ICC), pp. 2277-2281, Seoul, Korea, May 16-20, 2005.
  19. W. Choi and J. G. Andrews, "Improved Bit Error Probability Analysis for Maximal Ratio Combining in Asynchronous CDMA Channels", in Proc. of IEEE Global Communications Conference (Globecom), pp. 484-488, Dallas, Tx, Nov. 29 - Dec. 3, 2004.
  20. W. Choi and J. G. Andrews, "Performance of the Delay Diversity Receiver in Asynchronous CDMA Channels", in Proc. of IEEE Global Communications Conference (Globecom), pp.2057-2063, Dallas, Tx, Nov. 29 - Dec. 3, 2004.
  21. W. Choi, C. Yi, J. Y. Kim, and D. I. Kim, "A delay diversity receiver for CDMA cellular systems," in Proc. of IEEE Intl. Symp. on Intelligent Signal Processing and Comm. System (ISPACS), pp. 468-471, Seoul, Korea, Nov. 18-19, 2004.
  22. W. Choi and J. G. Andrews, "Outage Probability for Maximal Ratio Combining in Asynchronous CDMA Channels", in Proc. of IEEE Intl. Symp. on Spread Spectrum Techniques and Applications (ISSSTA), pp. 779-783, Sydney, Australia, Aug. 30 - Sept. 2, 2004.
  23. E. H. Choi, W. Choi, and J. G. Andrews,"Throughput of the 1x EV-DO System with Various Scheduling Algorithms", in Proc. of IEEE Intl. Symp. on Spread Spectrum Tech. and App. (ISSSTA), Sydney, Australia, pp. 359-363, Sydney, Australia, Aug. 30 - Sept. 2, 2004
  24. W. Choi, et al., "Throughput analysis of 1x EV-DO system with multi cells," in Proc. of IEICE ITC-CSCC (International Technical Conference on Circuit/Systems, Computer, and Communications), pp. 1924-1927, Phuket, Thailand, July 16-19, 2002.
  25. T. W. Ban, B. Y. Cho, W. Choi, and H. S. Cho, "On the capacity of a DS/CDMA system with automatic on-off switching repeaters," in Proc. of IEEE Intl. Conf. on Commun. (ICC), pp.780-784, Helsinki, Finland, June 11-14, 2001.
  26. W. Choi and J. Y. Kim, "Optimal transmission parameters of hopping pilot beacon for inter-frequency handoff in CDMA mobile cellular networks," in Proc. of IEEE Vehicular Technology Conference (VTC), pp.2349-2353, Rhodes, Greece, May 6-9, 2001.
  27. W. Choi and J. Y. Kim, "Forward link capacity of 3G wideband CDMA system with mixed traffic sources," in Proc. of IEEE Vehicular Technology Conference (VTC), pp.2620-2624, Rhodes, Greece, May 6-9, 2001.
  28. D. H. Kim, Y. N. Han, and W. Choi, "The capacity of TDD system in the FDD/TDD system sharing the same frequency," in Proc. of IEEE Asia Pacific Conference on Communication (APCC), pp. 769-773, Seoul, Korea, Oct.30-Nov.2, 2000.
  29. W. Choi and J. Y. Kim, "Erlang Capacity of forward link for a multirate DS/CDMA system," in Proc. of IEEE Asia Pacific Conference on Communication (APCC), pp. 168-172, Seoul, Korea, Oct.30-Nov. 2, 2000.
  30. W. Choi and J. Y. Kim, "Multiuser detection with multicarrier transmission for a DS/CDMA system in a multipath fading channel," in Proc. of IEEE Intl. Symp. on Personal, Indoor and Mobile Radio Commun., pp. 124-128, London, UK, Sep. 18-21, 2000.
  31. W. Choi and J. Y. Kim, "Analysis of forward link capacity for a DS/CDMA system with multirate traffic sources," in Proc. of IEICE ITC-CSCC (International Technical Conference on Circuit/Systems, Computers, and Communications), pp. 125-128, Pusan, Korea, July 11-13, 2000.
  32. W. Choi, et al., "Forward link capacity analysis of 3G CDMA system with multi-rate data and voice users," in Proc. of IEEE International Conference on Third Generation Wireless and Beyond (3Gwireless), pp. 360-367, Silicon Valley, USA, June 14-16, 2000.
  33. W. Choi, et al., "Forward link Erlang capacity of 3G CDMA system," in Proc. of IEE Mobile Communication Technologies (3G2000), pp. 213-217, London, UK, March 27-29, 2000.
  34. J. Y. Kim and W. Choi, "Performance of a multicarrier decorrelating multiuser receiver for a DS/CDMA system," in Proc. of IEEE Pacific Rim Conference on Communications, Computers, and Signal Processing, pp.520-524, Victoria BC, Canada, Aug.22-24, 1999.
  35. W. Choi, Y. K. Cho, and J. H. Lee, "Performance of frequency domain multiuser detector for synchronous CDMA communication over Rician fading channel," in Proc. of IEEE Veh. Technol. Conf., pp. 1725-1729, Ottawa, Canada, May18-21, 1998