Performance of differential modulation with wireless relays in Rayleigh fading channels

Qiang Zhao, Hongbin Li

Research output: Contribution to journalArticlepeer-review

83 Scopus citations

Abstract

We propose a new amplify-and-forward scheme amenable to differential modulation for cooperative systems with wireless relays. We derive closed-form expressions of the probability density function (PDF) of the signal-to-noise ratio (SNR) and average bit-error rate (BER) for the proposed scheme, and the analytical results are confirmed with numerical simulations. An asymptotic analysis reveals that the proposed cooperative scheme with one relay offers a diversity order approaching two in Rayleigh fading channels as the average SNR increases.

Original languageEnglish
Pages (from-to)343-345
Number of pages3
JournalIEEE Communications Letters
Volume9
Issue number4
DOIs
StatePublished - Apr 2005

Keywords

  • Cooperative diversity
  • Differential modulation
  • Performance analysis
  • Wireless relays

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