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

Daniel Zahavi; Ron Dabora

doi:10.1109/ISIT.2014.6874857

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

Daniel Zahavi, Ron Dabora

Department of Electrical & Computer Engineering

Ben-Gurion University of the Negev

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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 language	American English
Title of host publication	2014 IEEE International Symposium on Information Theory, ISIT 2014
Pages	371-375
Number of pages	5
DOIs	https://doi.org/10.1109/ISIT.2014.6874857
State	Published - 1 Jan 2014
Event	2014 IEEE International Symposium on Information Theory, ISIT 2014 - Honolulu, HI, United States Duration: 29 Jun 2014 → 4 Jul 2014

Publication series

Name	IEEE International Symposium on Information Theory - Proceedings

Conference

Conference	2014 IEEE International Symposium on Information Theory, ISIT 2014
Country/Territory	United States
City	Honolulu, HI
Period	29/06/14 → 4/07/14

All Science Journal Classification (ASJC) codes

Theoretical Computer Science
Information Systems
Modelling and Simulation
Applied Mathematics

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10.1109/ISIT.2014.6874857

Cite this

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title = "On the generalized degrees-of-freedom of the phase fading Z-interference channel with a relay",

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.",

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doi = "10.1109/ISIT.2014.6874857",

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series = "IEEE International Symposium on Information Theory - Proceedings",

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Zahavi, D & Dabora, R 2014, On the generalized degrees-of-freedom of the phase fading Z-interference channel with a relay. in 2014 IEEE International Symposium on Information Theory, ISIT 2014., 6874857, IEEE International Symposium on Information Theory - Proceedings, pp. 371-375, 2014 IEEE International Symposium on Information Theory, ISIT 2014, Honolulu, HI, United States, 29/06/14. https://doi.org/10.1109/ISIT.2014.6874857

On the generalized degrees-of-freedom of the phase fading Z-interference channel with a relay. / Zahavi, Daniel; Dabora, Ron.
2014 IEEE International Symposium on Information Theory, ISIT 2014. 2014. p. 371-375 6874857 (IEEE International Symposium on Information Theory - Proceedings).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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N2 - 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.

AB - 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.

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M3 - Conference contribution

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BT - 2014 IEEE International Symposium on Information Theory, ISIT 2014

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Y2 - 29 June 2014 through 4 July 2014

ER -

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

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