Performance of a differential modulation scheme with wireless relays in rayleigh fading channels

Qiang Zhao, Hongbin Li

Research output: Contribution to journalConference articlepeer-review

8 Scopus citations

Abstract

We develop a new differential amplify-and-forward (DAF) scheme for cooperative wireless relay when the channel state information (CSI) is unknown to any node in the system. For a cooperative system with one source, one relay and one destination node, we derive closed-form expressions of the probability density function (PDF) of the signal-to-noise ratio (SNR) and the average bit error rate (BER) for the proposed DAF scheme. Our analytical results are validated by numerical simulations. The proposed DAF scheme offers cooperative diversity gain and outperforms the conventional non-cooperative differential binary phase shift keying (BPSK) in Rayleigh fading channels.

Original languageEnglish
Pages (from-to)1198-1202
Number of pages5
JournalConference Record - Asilomar Conference on Signals, Systems and Computers
Volume1
StatePublished - 2004
EventConference Record of the Thirty-Eighth Asilomar Conference on Signals, Systems and Computers - Pacific Grove, CA, United States
Duration: 7 Nov 200410 Nov 2004

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