On the generalized degrees-of-freedom of the phase fading Z-interference channel with a relay

Daniel Zahavi, Ron Dabora

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

2 Scopus citations

Abstract

We study the generalized degrees of freedom (GDoF) of the phase fading Z-interference channel with a relay in the weak interference regime. We consider the scenario in which the relay node receives transmissions only from one of the sources but its transmissions are received at both destinations. We first derive two upper bounds on the achievable GDoF: the first bound is based on the genie-aided approach, and the second bound is based on the cut-set theorem. We then derive an achievable GDoF by employing the decode-and-forward strategy at the relay and by treating interference as noise at each receiver. Lastly, we derive conditions on the gains of the links, under which this simple scheme is GDoF-optimal. Our results support the application of relaying in scenarios in which the interference is weak.

Original languageEnglish
Title of host publication2014 IEEE International Symposium on Information Theory, ISIT 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages371-375
Number of pages5
ISBN (Print)9781479951864
DOIs
StatePublished - 1 Jan 2014
Event2014 IEEE International Symposium on Information Theory, ISIT 2014 - Honolulu, HI, United States
Duration: 29 Jun 20144 Jul 2014

Publication series

NameIEEE International Symposium on Information Theory - Proceedings
ISSN (Print)2157-8095

Conference

Conference2014 IEEE International Symposium on Information Theory, ISIT 2014
Country/TerritoryUnited States
CityHonolulu, HI
Period29/06/144/07/14

ASJC Scopus subject areas

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

Fingerprint

Dive into the research topics of 'On the generalized degrees-of-freedom of the phase fading Z-interference channel with a relay'. Together they form a unique fingerprint.

Cite this