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Performance Analysis of Linearly Constrained, Modified MMSE Detection for DS-CDMA Systems in Fading Channels  

Lee Seo young (선문대학교 정보통신공학과)
Kim Seong Rag (한국전자통신연구원 이동통신연구단)
Lim Jong Seul (선문대학교 정보통신공학과)
Ann Seong Joon (선문대학교 정보통신공학과)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.29, no.10A, 2004 , pp. 1159-1166 More about this Journal
Abstract
This paper follows up the previous work on the linearly constrained, modified minimum mean-squared error(MMSE) detection for direct-sequence code-division multiple-access DS-CDMA) systems in fading channels. We find a condition to avoid the breakdown of joint modified MMSE detection and pilot symbol-aided channel estimation (PSACE). The linearly constrained, modified MMSE solution is theoretically shown to be robust against time variations in Rayleigh fading channels. This fact is consistent with the simulation results. We also show that under some conditions the linearly constrained, modified MMSE detection maximizes the output signal-to-interference-plus-noise ratio.(SINR)
Keywords
Fading channels; interference suppression; CDMA; spread spectrum communications;
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