Adaptive reduced-rank interference suppression based on the multistage Wiener filter

Michael L. Honig*, J. Scott Goldstein

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

246 Scopus citations

Abstract

A class of adaptive reduced-rank interference suppression algorithms is presented based on the multi-stage Wiener filter (MSWF). The performance is examined in the context of direct-sequence (DS) code division multiple access (CDMA). Unlike the Principal Components method for reduced-rank filtering, the algorithms presented can achieve near full-rank performance with a filter rank much less than the dimension of the signal subspace. We present batch and recursive algorithms for estimating the filter parameters, which do not require an eigen-decomposition. Algorithm performance in a heavily loaded DS-CDMA system is characterized via computer simulation. Results show that the reduced-rank algorithms require significantly fewer training samples than other reduced- and full-rank algorithms.

Original languageEnglish (US)
Pages (from-to)986-994
Number of pages9
JournalIEEE Transactions on Communications
Volume50
Issue number6
DOIs
StatePublished - Jun 2002

Keywords

  • Adaptive filters
  • Code-division multiple access (CDMA)
  • Interference suppression

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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