Optimal linear space-time multiuser detector for analychonous DS-CDMA systems

Wang Wenjie; Zhang Jianguo; Yin Qinye

Volume 24 Issue 2

Feb. 2002

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Article Navigation > Journal of Electronics & Information Technology > 2002 > 24(2): 176-183

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Citation:

Wang Wenjie, Zhang Jianguo, Yin Qinye. Optimal linear space-time multiuser detector for analychonous DS-CDMA systems[J]. Journal of Electronics & Information Technology, 2002, 24(2): 176-183.

Citation:

Wang Wenjie, Zhang Jianguo, Yin Qinye. Optimal linear space-time multiuser detector for analychonous DS-CDMA systems[J]. Journal of Electronics & Information Technology, 2002, 24(2): 176-183.

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Optimal linear space-time multiuser detector for analychonous DS-CDMA systems

Received Date: 2000-06-16
Rev Recd Date: 2000-12-22
Publish Date: 2002-02-19

Abstract

Abstract

A versatile signal model suitable for linear space-time multiuser detectors in asynchronous DS-CDMA systems is proposed. Based on the model, a versatile linear space-tine multiuser detector is presented and its optimal solution according to the Liner Constrained Minimum Variance (LCMV) criterion is deduced. The analyses of the existent linear multiuser detectors demonstrate that these methods are just the special cases of the versatile detector in this paper and can only achieve the suboptimal solution. Hence their interference canceling performance is inferior to the optimal detector in this paper. Finally, numerical simulations are presented.

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References(1)

References

S. Verdu, Minimum probability of error for asynchronous Gaussian multiple-access channel, IEEE Trans. on Info. Theory, 1986, IT-32(1), 85-96.[2]R. Lupas, S. Verdu, Linear multiuser detectors for synchronous code-division multiple-access channels, IEEE Trans. on Info. Theory, 1989, (1), 123-136.[3]M. Honig, U. Madhow, S. Verdu, Blind adaptive multiuser detection, IEEE Trans. on Info.Theory, 1995, 41(7), 944-960.[4]S.Y. Miller, S. C. Schwartz, Integrated spatial-temporal detectors for asynchronous Gaussian multiple-access channels, IEEE Trans. on Comm. 1995, 43(2), 396-411.[5]J. Choi, Beamforming for the multiuser detection with decorrelator in synchronous CDMA systems: Approaches and performance analysis, Signal Processing, 1997, 60(7), 195-211.[6]X.D. Wang, H. V. Poor, Space-time multiuser detection in multipath CDMA channels, IEEE Trans. on Signal Processing, 1999, 47(9), 2356-2374.

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