Distortion exponents for decode-and-forward multi-relay cooperative networks

Jing Wang, Jie Liang, Sami Muhaidat

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

11 Scopus citations

Abstract

In this paper, we consider the transmission of a Gaussian signal in a multi-relay cooperative system, where each relay is half-duplex and employs the decode-and-forward relaying protocol. We focus on the analysis of the distortion exponent, which characterizes the high signal-to-noise ratio (SNR) behavior of the end-to-end distortion. Specifically, we investigate the layered source coding with progressive or broadcast transmission. Each transmission scheme is further combined with the repetition-based or relay-selection-based multi-relay cooperation protocol. We derive the distortion exponents of all four cases and illustrate the effect of the bandwidth expansion ratio, number of relays and cooperation protocols on the optimal distortion exponent. We also establish the successive refinability of the diversity-multiplexing tradeoff of the repetition-based and relayselection- based cooperation protocols in multi-relay cooperative systems.

Original languageBritish English
Title of host publication2009 IEEE International Symposium on Information Theory, ISIT 2009
Pages854-858
Number of pages5
DOIs
StatePublished - 2009
Event2009 IEEE International Symposium on Information Theory, ISIT 2009 - Seoul, Korea, Republic of
Duration: 28 Jun 20093 Jul 2009

Publication series

NameIEEE International Symposium on Information Theory - Proceedings
ISSN (Print)2157-8102

Conference

Conference2009 IEEE International Symposium on Information Theory, ISIT 2009
Country/TerritoryKorea, Republic of
CitySeoul
Period28/06/093/07/09

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