Design of MMSE multiuser detectors using random matrix techniques

Linbo Li, Antonia M. Tulino, Sergio Verdú

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations


Reduced-rank MMSE receivers using asymptotic weights reduce receiver complexity while maintaining good performance in long-sequence DS-CDMA systems. In this paper, we analyze such receivers in multipath fading channels and extend their design to multicarrier CDMA (both uplink and downlink). An explicit expression is obtained for the asymptotic eigenvalue moments of the interference autocorrelation matrix and for the asymptotic weights derived therefrom and used in the reduced-rank receiver. The full-rank MMSE receiver is also considered for multicarrier CDMA and a fixed point equation of the asymptotic maximum output SINR is derived which particularizes to the Tse-Hanly fixed point equation for the special case of DS-CDMA. An explicit expression of the MMSE spectral efficiency is proposed for multicarrier CDMA.

Original languageAmerican English
Pages (from-to)2537-2541
Number of pages5
JournalIEEE International Conference on Communications
StatePublished - Jul 18 2003
Event2003 International Conference on Communications (ICC 2003) - Anchorage, AK, United States
Duration: May 11 2003May 15 2003

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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