Cooperative ARQs with opportunistic distributed space-time coding: Effective protocols and performance analysis

Hsin Li Chiu*, Sau-Hsuan Wu, Jin Hao Li

*Corresponding author for this work

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

1 Scopus citations

Abstract

The paper studies effective protocols and corresponding performance of automatic retransmission request (ARQ) via decode-and-forward (DF) opportunistic distributed space-time coding (ODSTC). Analysis shows that the diversity via ARQ can be drastically increased by allowing non-active relays to overhear the DSTC signal sent by the active relays. Nevertheless, simple schemes without overhearing may also achieve the same diversity when the link quality between the source-relay or the relay-destination is good, hence greatly alleviating the need for a complex protocol with overhearing. Moreover, using more relays opportunistically does provide a higher coding gain if the source-relay channel quality is extremely good, otherwise using two or three relays gives almost the same performance as if using all of them.

Original languageEnglish
Title of host publication2010 IEEE Information Theory Workshop, ITW 2010 - Proceedings
DOIs
StatePublished - 1 Dec 2010
Event2010 IEEE Information Theory Workshop, ITW 2010 - Dublin, Ireland
Duration: 30 Aug 20103 Sep 2010

Publication series

Name2010 IEEE Information Theory Workshop, ITW 2010 - Proceedings

Conference

Conference2010 IEEE Information Theory Workshop, ITW 2010
CountryIreland
CityDublin
Period30/08/103/09/10

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