Up-link Multi-user detection in CDMA system based on blind source separation

doi:10.13190/jbupt.200902.111.002

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2009, Vol. 32 ›› Issue (2): 111-114.doi: 10.13190/jbupt.200902.111.002

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Up-link Multi-user detection in CDMA system based on blind source separation

FU Wei-Hong Xiao-Niu Yang Nai-An Liu Xing-Wen Zeng

Received:2007-11-09 Revised:1900-01-01 Online:2009-04-28 Published:2009-04-28
Contact: FU Wei-Hong

Abstract

Abstract:

Based on the analysis of the signal model in code division multiple access (CDMA )system, a multiuser detection algorithm based on blind source speration (BSS) is proposed. The algorithm made full use of the independency of the user's information. Simulations show that, with the same signaltonoise ratio, the symbol error ratio (SER) of the proposed is about half of that of the minimummeansquare error (MMSE) algorithm. When the power ratio of the interference user to the expected user (orinterferencetosignal ration, ISR) is 40?dB, the SER of the algorithm is two order lower than that of the MMSE algorithm. Furthermore, the higher ISR is, the greater the degree of improvement of the ability of antinear far effect in the new algorithm.

Key words: code division multiple access, multi

FU Wei-Hong Xiao-Niu Yang Nai-An Liu Xing-Wen Zeng. Up-link Multi-user detection in CDMA system based on blind source separation[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2009, 32(2): 111-114.

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Up-link Multi-user detection in CDMA system based on blind source separation

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