Design and analysis of low-complexity interference mitigation on vector channels

Ralf R. Müller, Sergio Verdú

Research output: Contribution to journalArticlepeer-review

102 Scopus citations


Linear multiuser detectors for vector channels with crosstalk are approximated by weighted matrix polynomials. The weight optimization problem is overcome using convergence results from random matrix theory. The results are also extended to receivers with subsequent successive decoding. In the case of subsequent successive decoding, a novel low-complexity implementation is found for the first-order approximation that is based on matched filter banks only and docs not require matrix algebra. Spectral efficiency is obtained analytically and found to be fairly close to optimum. The paper is focussed on multiuser detection for CDMA, but the results can be easily extended to communication via antenna arrays.

Original languageEnglish (US)
Pages (from-to)1429-1441
Number of pages13
JournalIEEE Journal on Selected Areas in Communications
Issue number8
StatePublished - Aug 2001

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering


  • Antenna arrays
  • CDMA
  • Interference cancellation
  • Multiuser detection
  • Random matrices
  • Spectral efficiency


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