Relevance of the Asymptotic Reduced-Rank MMSE detector in MC-DS-CDMA system

Abstract : This paper deals with the design of receivers for uplink quasi-synchronous MC-DS-CDMA systems. Our purpose is twofold. Firstly, we aim at designing a reduced-rank MMSE receiver based on a matrix polynomial expansion of the inverse of the received signal autocorrelation matrix. This receiver makes it possible to get a compromise between computational cost and performances in term of Bit Error Rate (BER). Secondly, we propose to derive its asymptotic, i.e. when the spreading sequence length N and the number of active users K tend to infinity with a ratio fixed, version by using random matrix theory. The resulting asymptotic reduced-rank MMSE receiver has a computational cost per symbol which is reduced. We also investigate the relevance of both receivers in various simulation protocols.
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Contributor : Eric Grivel <>
Submitted on : Wednesday, August 22, 2007 - 1:14:37 PM
Last modification on : Thursday, January 11, 2018 - 6:21:07 AM


  • HAL Id : hal-00167703, version 1


Eric Grivel, Julie Grolleau, Mohamed Najim. Relevance of the Asymptotic Reduced-Rank MMSE detector in MC-DS-CDMA system. ISCCSP (International Symposium on Communications, Control and Signal Processing), 2006, Marrakech, Morocco. pp. ⟨hal-00167703⟩



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