Low-rank MMSE detector for synchronous DS-CDMA

Xiaodong Cai, Hongya Ge, A. N. Akansu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

The low-rank minimum mean-squared error (MMSE) detector for direct sequence (DS) spread-spectrum code-division multiple-Access (CDMA) is proposed. The low-rank linear MMSE detector lies in a subspace of the signal space. We demonstrate that when the dimension of the signal space is lower than the processing gain and the MMSE detector is obtained using the estimated covariance matrix, the low-rank MMSE detector can perform better than the full rank MMSE detector. A subspace tracking algorithm that tracks both the rank and the signal subspace is used to implement the low-rank MMSE detector adaptively.

Original languageEnglish (US)
Title of host publicationConference Record of the 33rd Asilomar Conference on Signals, Systems, and Computers
EditorsMichael B. Matthews
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages940-944
Number of pages5
ISBN (Electronic)0780357000, 9780780357006
DOIs
StatePublished - Jan 1 1999
Externally publishedYes
Event33rd Asilomar Conference on Signals, Systems, and Computers, ACSSC 1999 - Pacific Grove, United States
Duration: Oct 24 1999Oct 27 1999

Publication series

NameConference Record of the 33rd Asilomar Conference on Signals, Systems, and Computers
Volume2

Conference

Conference33rd Asilomar Conference on Signals, Systems, and Computers, ACSSC 1999
CountryUnited States
CityPacific Grove
Period10/24/9910/27/99

ASJC Scopus subject areas

  • Signal Processing
  • Computer Networks and Communications

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