Asymptotic analysis of improved linear receivers for BPSK-CDMA subject to fading

Antonia Maria Tulino, Sergio Verdú

Research output: Contribution to journalArticle

47 Scopus citations

Abstract

In this paper, we design and analyze a new class of linear multiuser detectors, which can be applied when the users employ BPSK modulation and the fading coefficients of the active users are known at the receiver (such as base-station demodulation). The tools of asymptotic distribution of the spectrum of large random matrices are used to show that relative to the classical minimum mean-square-error (MMSE) receiver, the output signal-to-noise ratio (SNR) improves by halving the number of effective interferers and adding 3 dB to the input SNR. We also propose sensible approximations to the proposed linear receivers so as to facilitate their use in CDMA systems that employ long codes.

Original languageEnglish (US)
Pages (from-to)1544-1555
Number of pages12
JournalIEEE Journal on Selected Areas in Communications
Volume19
Issue number8
DOIs
StatePublished - Aug 1 2001

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Keywords

  • Decorrelator
  • Fading channels
  • MMSE
  • Multiuser detection
  • Random spreading sequence
  • Spectral efficiency

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