Estimate-and-forward relaying for the Gaussian relay channel with coded modulation

Ron Dabora, Sergio D. Servetto

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

2 Scopus citations

Abstract

In this work we consider the Gaussian relay channel with coded modulation at the transmitter and an orthogonal relay-destination link. We investigate the application of the estimate-and-forward (EAF) scheme with different mappings at the relay to this scenario. We show that in certain situations a three-level quantization outperforms the Gaussian mapping, which is the common practice in this scenario. We conclude that for the coded modulation scenario Gaussian quantization is good at low source-relay SNR, decode-and-forward is superior at high source-relay SNR and at intermediate SNR, methods that combine elements of both schemes are superior to these individual assignments. Another observation is that as the source-relay SNR increases, the cardinality of the auxiliary random variable can be decreased.

Original languageEnglish
Title of host publicationProceedings - 2007 IEEE International Symposium on Information Theory, ISIT 2007
Pages1046-1050
Number of pages5
DOIs
StatePublished - 1 Dec 2007
Externally publishedYes
Event2007 IEEE International Symposium on Information Theory, ISIT 2007 - Nice, France
Duration: 24 Jun 200729 Jun 2007

Publication series

NameIEEE International Symposium on Information Theory - Proceedings
ISSN (Print)2157-8101

Conference

Conference2007 IEEE International Symposium on Information Theory, ISIT 2007
Country/TerritoryFrance
CityNice
Period24/06/0729/06/07

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Information Systems
  • Modeling and Simulation
  • Applied Mathematics

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