The Preconditioned soft decision multiuser interference cancellation in long-code used DS/CDMA systems

Chen Ming; Zhang Jilin

Volume 25 Issue 7

Jul. 2003

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Article Navigation > Journal of Electronics & Information Technology > 2003 > 25(7): 943-948

Chen Ming, Zhang Jilin. The Preconditioned soft decision multiuser interference cancellation in long-code used DS/CDMA systems[J]. Journal of Electronics & Information Technology, 2003, 25(7): 943-948.

Citation:

Chen Ming, Zhang Jilin. The Preconditioned soft decision multiuser interference cancellation in long-code used DS/CDMA systems[J]. Journal of Electronics & Information Technology, 2003, 25(7): 943-948.

Citation:

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The Preconditioned soft decision multiuser interference cancellation in long-code used DS/CDMA systems

Received Date: 2001-12-17
Rev Recd Date: 2002-08-09
Publish Date: 2003-07-19

Abstract

Abstract

In long-code used DS/CDMA communication systems, the convergence of perfor-mance is limited by the number of users in multi-stage Linear Soft Decision Parallel Interference Cancellation (LSD-PIC) multiuser detectors. In this paper, the precondition method in matrix computation is proposed to be applied to improve the convergence of iteration and overcome the convergence breakdown in the case of high load for the LSD-PIC multiuser detectors. Further-more, the polynomial preconditioner which could be obtained by low computational complexity is proposed, and the optimal coefficients for zero-order and first order polynomial preconditioner are deduced.

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References(1)

References

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