Performance of Multiuser Detection in Multirate CDMA Systems
Pages 293 - 311
Abstract
Multiuser detectors for asynchronous multirate code-division multiple-access (CDMA) systems are considered. A multirate CDMA system model able to fit several system concepts in the same framework is presented. The performance of the multi-code (MC) system with one processing gain and the multiple processing gain (MPG) system is compared. Upper bounds for the expected value of the asymptotic multiuser efficiency of the decorrelating detector for a synchronous multirate CDMA system with three effective users are derived for a system with one and two processing gains. The numerical results show that the performance of the decorrelating detector for MC and MPG systems do not differ significantly. The bit error rates (BER) of the decorrelating, parallel interference canceler (PIC) and groupwise serial interference canceler (GSIC) with either PIC or decorrelator within the group are compared. The results show that the decorrelating and the GSIC detectors yield the best performance. For all interference cancellation schemes the BER saturates at high SNRs due to decision errors degrading the multiple-access interference (MAI) estimates.
References
[1]
1. T. Ojanperä, K. Rikkinen, H. Häkkinen, K. Pehkonen, A. Hottinen and J. Lilleberg, "Design of a 3rd Generation Multirate CDMA Systems with Multiuser Detection", in Proc. IEEE Int. Symp. Spread Spectrum Techniques and Applications, Mainz, Germany, September 22-25 1996, Vol. 1, pp. 334-338.
[2]
2. F. Adachi, M. Sawahashi, T. Dohi and K. Ohno, "Coherent DS-CDMA: Promising Multiple Access for Wireless Multimedia Mobile Communication", in Proc. IEEE Int. Symp. Spread Spectrum Techniques and Applications, Mainz, Germany, September 22-25 1996, Vol. 1, pp. 351-358.
[3]
3. T. Ottosson and A. Svensson, "Multi-Rate Schemes in DS/CDMA Systems", in Proc. IEEE Vehic. Tech. Conf., Chicago, IL, July 25-28 1995, pp. 1006-1010.
[4]
4. U. Mitra, "Observations on Jointly Optimal Detection for Multi-Rate DS/CDMA Systems", in Proc. Commun. Th. Mini-Conf. in Conj. IEEE Glob. Telecommon. Conf., London, U.K., November 18-22 1996, pp. 127-131.
[5]
5. S. Verdú, "Multiuser Detection", in Advances in Statistical Signal Processing, Vol. 2, pp. 369-409, JAI Press Inc., Greenwich, CT, 1993.
[6]
6. A. Duel-Hallen, J. Holtzman, and Z. Zvonar, "Multiuser Detection for CDMA Systems", IEEE/ACM Pers. Commun., Vol. 2, pp. 46-58, 1995.
[7]
7. S. Moshavi, "Multi-User Detection for DS-CDMA Communications", IEEE Commun. Mag., Vol. 34, No. 10, pp. 124-137, 1996.
[8]
8. M. Juntti and S. Glisic, "Advanced CDMA for Wireless Communications", in S.G. Glisic and P.A. Leppänen (eds.), Wireless Communications: TDMA Versus CDMA, Chapter 4, Kluwer, 1997, pp. 447-490.
[9]
9. S. Verdú, "Minimum Probability of Error for Asynchronous Gaussian Multiple-Access Channels", IEEE Trans. Inform. Th., Vol. 32, No. 1, pp. 85-96, 1986.
[10]
10. R. Lupas and S. Verdú, "Linear Multiuser Detectors for Synchronous Code-Division Multiple-Access Channels", IEEE Trans. Inform. Th., Vol. 34, No. 1, pp. 123-136, 1989.
[11]
11. R. Lupas and S. Verdú, "Near-Far Resistance of Multiuser Detectors in Asynchronous Channels", IEEE Trans. Commun., Vol. 38, No. 4, pp. 496-508, 1990.
[12]
12. A. Klein and P.W. Baier, "Linear Unbiased Data Estimation in Mobile Radio Systems Applying CDMA", IEEE J. Select. Areas Commun., Vol. 11, No. 7, pp. 1058-1066, 1993.
[13]
13. Z. Xie, R.T. Short, and C.K. Rushforth, "A Family of Suboptimum Detectors for Coherent Multiuser Communications", IEEE J. Select. Areas Commun., Vol. 8, No. 4, pp. 683-690, 1990.
[14]
14. A. Duel-Hallen, "Decorrelating Decision-Feedback Multiuser Detector for Synchronous Code-Division Multiple-Access Channel", IEEE Trans. Commun., Vol. 41, No. 2, pp. 285-290, 1993.
[15]
15. A. Duel-Hallen, "A Family of Multiuser Decision-Feedback Detectors for Asynchronous Code-Division Multiple-Access Channels", IEEE Trans. Commun. Vol. 43, No. 2/3/4, pp. 421-434, 1995.
[16]
16. M.K. Varanasi and B. Aazhang, "Multistage Detection in Asynchronous Code-Division Multiple-Access Communications", IEEE Trans. Commun., Vol. 38, No. 4, pp. 509-519, 1990.
[17]
17. M.K. Varanasi and B. Aazhang, "Near-Optimum Detection in Synchronous Code-Division Multiple-Access Systems", IEEE Trans. Commun., Vol. 39, No. 5, pp. 725-736, 1991.
[18]
18. R. Kohno, H. Imai, M. Hatori and S. Pasupathy, "Combination of an Adaptive Array Antenna and a Canceller of Interference for Direct-Sequence Spread-Spectrum Multiple-Access System", IEEE J. Select. Areas Commun., Vol. 8, No. 4, pp. 675-682, 1990.
[19]
19. M. Latva-aho and J. Lilleberg, "Parallel Interference Cancellation in Multiuser CDMA Channel Estimation", Wireless Pers. Commun., 1998, to appear.
[20]
20. P. Patel and J. Holtzman, "Analysis of a Simple Successive Interference Cancellation Scheme in a DS/CDMA System", IEEE J. Select. Areas Commun., Vol. 12, No. 10, pp. 796-807, 1994.
[21]
21. M.K. Varanasi, "Group Detection in Synchronous Gaussian Code-Division Multiple-Access Channels", IEEE Trans. Inform. Th., Vol. 41, No. 3, pp. 1983-1096, 1995.
[22]
22. M.K. Varanasi, "Parallel Group Detection for Synchronous CDMA Communication over Frequency-Selective Rayleigh Fading Channels", IEEE Trans. Inform. Th., Vol. 41, No. 3, pp. 1983-1096, 1995.
[23]
23. F. van der Wijk, G.M.J. Janssen and R. Prasad, "Groupwise Successive Interference Cancellation in a DS/CDMA System", in Proc. IEEE Int. Symp. Personal, Indoor and Mobile Radio Commun., Toronto, Ontario, Canada, September 27-29 1995, Vol. 2, pp. 742-746.
[24]
24. M.J. Juntti and B. Aazhang, "Finite Memory-Length Linear Multiuser Detection for Asynchronous CDMA Communications", IEEE Trans. Commun., Vol. 45, No. 5, pp. 611-622, 1997.
[25]
25. M.J. Juntti and J.O. Lilleberg, "Linear FIR Multiuser Detection for Multiple Data Rate CDMA Systems", in Proc. IEEE Vehic. Tech. Conf., Phoenix, AZ, May 4-7 1997, Vol. 2, pp. 455-459.
[26]
26. M.J. Juntti and B. Aazhang, "Linear Finite Memory-Length Multiuser Detectors", in Proc. Commun. Th. Mini-Conf. in Conj. IEEE Glob. Telecommun. Conf., Singapore, November 13-17 1995, pp. 126-130.
[27]
27. T.M. Cover and J.A. Thomas, Elements of Information Theory, John Wiley, New York, 1991.
[28]
28. A. Hottinen, H. Holma and A. Toskala, "Multiuser Detection for Multirate CDMA Communications", in Proc. IEEE Int. Conf. Commun., Dallas, TX, June 24-28 1996.
[29]
29. S. Parkvall, E. Ström and B. Ottersten, "The Impact of Timing Errors on the Performance of Linear DS-CDMA Receivers", IEEE J. Select. Areas Commun., Vol. 14, No. 8, pp. 1660-1668, 1996.
[30]
30. M. Latva-aho and J. Lilleberg, "Parallel Interference Cancellation in Multiuser Detection", in Proc. IEEE Int. Symp. Spread Spectrum Techniques and Applications, Mainz, Germany, September 22-25 1996, Vol. 3, pp. 1151-1155.
- Performance of Multiuser Detection in Multirate CDMA Systems
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Copyright © Copyright © 1999 Kluwer Academic Publishers.
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Published: 01 December 1999
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