Message and state cooperation in a relay channel when the relay has strictly causal state information

Min Li*, Osvaldo Simeone, Aylin Yener

*Corresponding author for this work

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

1 Citation (Scopus)

Abstract

A state-dependent relay channel is studied in which strictly causal channel state information is available at the relay and no state information is available at the source and destination. Source and relay are connected via two unidirectional out-of-band orthogonal links of finite capacity, and a state-dependent memoryless channel connects source and relay, on one side, and the destination, on the other. Via the orthogonal links, the source can convey information about the message to be delivered to the destination to the relay while the relay can forward state information to the source. This exchange enables cooperation between source and relay on both transmission of message and state information to the destination. First, an achievable scheme, inspired by noisy network coding, is proposed that exploits both message and state cooperation. Next, based on the given achievable rate and appropriate upper bounds, capacity results are identified for some special cases. Finally, a Gaussian model is studied, along with corresponding numerical results that illuminate the relative merits of state and message cooperation.

Original languageEnglish
Title of host publicationITA 2011
Subtitle of host publicationProceedings of the 2011 Information Theory and Applications Workshop
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages351-356
Number of pages6
ISBN (Electronic)9781457703614
ISBN (Print)9781457703607
DOIs
Publication statusPublished - 2011
Externally publishedYes
Event2011 Information Theory and Applications Workshop, ITA 2011 - San Diego, CA, United States
Duration: 6 Feb 201111 Feb 2011

Other

Other2011 Information Theory and Applications Workshop, ITA 2011
CountryUnited States
CitySan Diego, CA
Period6/02/1111/02/11

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