Differentially coherent blind multiuser receiver for Rayleigh fading CDMA channels

Insoo Sohn, Someshwar C. Gupta

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

This paper studies the performance of a blind adaptive multiuser receiver in slow and fast fading channels. The receiver consists of fractionally spaced equalizer, adaptive weight mechanism, matched filter, and differential decoder. Thus, the complexity of the receiver is slightly higher than the conventional receiver. The main problem of an adaptive multiuser receiver is the requirement of training sequences for the adaptation process. Due to time-varying interference and fading effect in time-correlated channels, the training sequence is difficult to obtain or becomes defective. The blind multiuser receiver considered in this paper does not require any training sequences, but retains all the advantages that adaptive receivers have. Simulation results show that the receiver is effective in fading channels with perfect power control and with near-far effect. The blind adaptive multiuser receiver is an attractive alternative to the conventional receiver in Rayleigh fading CDMA channels.

Original languageEnglish
Title of host publicationICUPC 1998 - IEEE 1998 International Conference on Universal Personal Communications, Conference Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages29-32
Number of pages4
ISBN (Electronic)0780351061, 9780780351066
DOIs
StatePublished - 1998
EventIEEE International Conference on Universal Personal Communications, ICUPC 1998 - Florence, Italy
Duration: 5 Oct 19989 Oct 1998

Publication series

NameICUPC 1998 - IEEE 1998 International Conference on Universal Personal Communications, Conference Proceedings
Volume1

Conference

ConferenceIEEE International Conference on Universal Personal Communications, ICUPC 1998
Country/TerritoryItaly
CityFlorence
Period5/10/989/10/98

Keywords

  • AWGN
  • Decoding
  • Detectors
  • Differential quadrature phase shift keying
  • Equalizers
  • Fading
  • Interference
  • Matched filters
  • Multiaccess communication
  • Rayleigh channels

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