Interference channel with a half-duplex Out-of-Band Relay

Onur Sahin, Osvaldo Simeone, Elza Erkip

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

Abstract

A Gaussian interference channel (IC) aided by a half-duplex relay is considered, in which the relay receives and transmits in an orthogonal band with respect to the IC. The system thus consists of two parallel channels, the IC and the channel over which the relay is active, which is referred to as Out-of-Band Relay Channel (OBRC). The OBRC is operated by separating a multiple access phase from the sources to the relay and a broadcast phase from the relay to the destinations. Conditions under which the optimal operation, in terms of the sum-capacity, entails either signal relaying and/or interference forwarding by the relay are identified. These conditions also assess the optimality of either separable or non-separable transmission over the IC and OBRC. Specifically, the optimality of signal relaying and separable coding is established for scenarios where the relay-to-destination channels set the performance bottleneck with respect to the source-to-relay channels on the OBRC. Optimality of interference forwarding and non-separable operation is also established in special cases.

Original languageEnglish (US)
Title of host publication2010 IEEE International Symposium on Information Theory, ISIT 2010 - Proceedings
Pages395-399
Number of pages5
DOIs
StatePublished - 2010
Event2010 IEEE International Symposium on Information Theory, ISIT 2010 - Austin, TX, United States
Duration: Jun 13 2010Jun 18 2010

Other

Other2010 IEEE International Symposium on Information Theory, ISIT 2010
CountryUnited States
CityAustin, TX
Period6/13/106/18/10

Fingerprint

Interference Channel
Relay
Relay Channel
Optimality
Nonseparable
Interference
Multiple Access
Broadcast
Coding
Scenarios

ASJC Scopus subject areas

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

Cite this

Sahin, O., Simeone, O., & Erkip, E. (2010). Interference channel with a half-duplex Out-of-Band Relay. In 2010 IEEE International Symposium on Information Theory, ISIT 2010 - Proceedings (pp. 395-399). [5513378] https://doi.org/10.1109/ISIT.2010.5513378

Interference channel with a half-duplex Out-of-Band Relay. / Sahin, Onur; Simeone, Osvaldo; Erkip, Elza.

2010 IEEE International Symposium on Information Theory, ISIT 2010 - Proceedings. 2010. p. 395-399 5513378.

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

Sahin, O, Simeone, O & Erkip, E 2010, Interference channel with a half-duplex Out-of-Band Relay. in 2010 IEEE International Symposium on Information Theory, ISIT 2010 - Proceedings., 5513378, pp. 395-399, 2010 IEEE International Symposium on Information Theory, ISIT 2010, Austin, TX, United States, 6/13/10. https://doi.org/10.1109/ISIT.2010.5513378
Sahin O, Simeone O, Erkip E. Interference channel with a half-duplex Out-of-Band Relay. In 2010 IEEE International Symposium on Information Theory, ISIT 2010 - Proceedings. 2010. p. 395-399. 5513378 https://doi.org/10.1109/ISIT.2010.5513378
Sahin, Onur ; Simeone, Osvaldo ; Erkip, Elza. / Interference channel with a half-duplex Out-of-Band Relay. 2010 IEEE International Symposium on Information Theory, ISIT 2010 - Proceedings. 2010. pp. 395-399
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