Cognitive relaying with one-sided interference

Onur Sahin, Elza Erkip

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

Abstract

We consider one-sided interference channel with two independent source-destination pairs, and a cognitive relay with only a link to the destination that observes interference. We first assume the relay non-causally obtains the signal messages (message cognitive) whereas the sources do not cooperate, and provide a general achievable rate region for the Gaussian case. We further analyze a more realistic set-up where instead of source messages, the relay knows the transmitted signals of both sources and is unaware of the codebooks. We investigate the achievable region under this signal cognitive assumption and further obtain a converse, thereby the capacity region under strong relay-interference conditions. Our results suggest that while relaying is usually utilized as an effective technique for boosting received signal quality, in the presence of interference, an equally important task of the relay is to manage the interference.

Original languageEnglish (US)
Title of host publication2008 42nd Asilomar Conference on Signals, Systems and Computers, ASILOMAR 2008
Pages689-694
Number of pages6
DOIs
StatePublished - 2008
Event2008 42nd Asilomar Conference on Signals, Systems and Computers, ASILOMAR 2008 - Pacific Grove, CA, United States
Duration: Oct 26 2008Oct 29 2008

Publication series

NameConference Record - Asilomar Conference on Signals, Systems and Computers
ISSN (Print)1058-6393

Other

Other2008 42nd Asilomar Conference on Signals, Systems and Computers, ASILOMAR 2008
CountryUnited States
CityPacific Grove, CA
Period10/26/0810/29/08

ASJC Scopus subject areas

  • Signal Processing
  • Computer Networks and Communications

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