Subspace methods for blind joint channel estimation and multiuser detection in CDMA systems

Xiaodong Wang, H. Vincent Poor

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Recently developed subspace techniques for blind adaptive multiuser detection are briefly reviewed first. In particular, blind methods based on signal subspace tracking for adapting linear multiuser detectors in AWGN CDMA channels are considered, as well as extensions of these techniques to frequency selective fading channels, dispersive channels, and antenna array spatial processing. In addition, subspace-based nonlinear adaptive techniques for robust blind multiuser detection in non-Gaussian ambient noise channels are also described. Several new techniques are then developed within the subspace framework for blind joint channel estimation and multiuser detection, under some specific channel conditions. These include (1) an adaptive receiver structure for joint multiuser detection and equalization in dispersive CDMA channels, (2) a subspace method for joint multiuser detection and equalization in unknown correlated noise, and (3) a method for joint interference suppression and channel tracking in time-varying fading channels.

Original languageEnglish (US)
Pages (from-to)59-71
Number of pages13
JournalWireless Networks
Volume6
Issue number1
DOIs
StatePublished - Feb 1 2000

All Science Journal Classification (ASJC) codes

  • Information Systems
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Subspace methods for blind joint channel estimation and multiuser detection in CDMA systems'. Together they form a unique fingerprint.

Cite this