Opportunistic relaying through amplify-and-forward distributed space-time codes with partial statistical CSI at relays

Behrouz Maham; Are Hjørungnes

doi:10.1109/ALLERTON.2008.4797668

Opportunistic relaying through amplify-and-forward distributed space-time codes with partial statistical CSI at relays

Behrouz Maham, Are Hjørungnes

Department of Electrical and Computer Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

9 Citations (Scopus)

Abstract

We consider a wireless relay network with Rayleigh fading channels, and apply distributed space-time coding (DSTC) in amplify-and-forward (AF) mode. It is assumed that the relays have statistical channel state information (CSI) of the local source-relay channels, while the destination has full instantaneous CSI of channels. It turns out that, combined with power allocation in the relays, AF DSTC results in a new opportunistic relaying scheme, in which the best relay is selected to retransmit the source's signal. Furthermore, we have derived the optimum power allocation between two cooperative transmission phases by maximizing the average received SNR at the destination. Next, assuming M-PSK and M-QAM modulations, we analyze the performance of cooperative diversity wireless networks using AF opportunistic relaying. We first derive the probability density function (pdf) and the moment generating function (MGF) of the received SNR at the destination. Then, the MGF is used to determine the symbol error rate in Rayleigh fading channels. Our analytical results have been confirmed by simulation results, using full-rate, full-diversity distributed space-time codes.

Original language	English
Title of host publication	46th Annual Allerton Conference on Communication, Control, and Computing
Pages	1004-1008
Number of pages	5
DOIs	https://doi.org/10.1109/ALLERTON.2008.4797668
Publication status	Published - Dec 1 2008
Event	46th Annual Allerton Conference on Communication, Control, and Computing - Monticello, IL, United States Duration: Sep 24 2008 → Sep 26 2008

Publication series

Name	46th Annual Allerton Conference on Communication, Control, and Computing

Other

Other	46th Annual Allerton Conference on Communication, Control, and Computing
Country	United States
City	Monticello, IL
Period	9/24/08 → 9/26/08

ASJC Scopus subject areas

Computer Networks and Communications
Software
Control and Systems Engineering
Communication

Access to Document

10.1109/ALLERTON.2008.4797668

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Maham, B., & Hjørungnes, A. (2008). Opportunistic relaying through amplify-and-forward distributed space-time codes with partial statistical CSI at relays. In 46th Annual Allerton Conference on Communication, Control, and Computing (pp. 1004-1008). [4797668] (46th Annual Allerton Conference on Communication, Control, and Computing). https://doi.org/10.1109/ALLERTON.2008.4797668

Opportunistic relaying through amplify-and-forward distributed space-time codes with partial statistical CSI at relays. / Maham, Behrouz; Hjørungnes, Are.

46th Annual Allerton Conference on Communication, Control, and Computing. 2008. p. 1004-1008 4797668 (46th Annual Allerton Conference on Communication, Control, and Computing).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Maham, B & Hjørungnes, A 2008, Opportunistic relaying through amplify-and-forward distributed space-time codes with partial statistical CSI at relays. in 46th Annual Allerton Conference on Communication, Control, and Computing., 4797668, 46th Annual Allerton Conference on Communication, Control, and Computing, pp. 1004-1008, 46th Annual Allerton Conference on Communication, Control, and Computing, Monticello, IL, United States, 9/24/08. https://doi.org/10.1109/ALLERTON.2008.4797668

Maham B, Hjørungnes A. Opportunistic relaying through amplify-and-forward distributed space-time codes with partial statistical CSI at relays. In 46th Annual Allerton Conference on Communication, Control, and Computing. 2008. p. 1004-1008. 4797668. (46th Annual Allerton Conference on Communication, Control, and Computing). https://doi.org/10.1109/ALLERTON.2008.4797668

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