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On the Cognitive Interference Channel with Causal Unidirectional Destination Cooperation

Reátegui del Águila, Fernando, Imran, Muhammad Ali and Tafazolli, Rahim (2014) On the Cognitive Interference Channel with Causal Unidirectional Destination Cooperation IEEE Communications Letters, 18 (7). pp. 1123-1126.

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In previous works the cognitive interference channel with unidirectional destination cooperation has been studied. In this model the cognitive receiver acts as a relay of the primary user's message and its operation is assumed to be strictly causal. In this paper we study the same channel model with a causal rather than a strictly causal relay, i.e. the relay's transmit symbol depends not only on its past but also on its current received symbol. We propose an outer bound for the discrete memoryless channel which is later used to compute an outer bound for the Gaussian channel. We also propose an achievable scheme based on instantaneous amplify-and-forward relaying that meets the outer bound in the very strong interference regime.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering > Centre for Communication Systems Research
Authors :
Reátegui del Águila,
Imran, Muhammad
Date : 8 July 2014
DOI : 10.1109/LCOMM.2014.2323265
Additional Information : © 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Depositing User : Fernando Reategui Del Aguila
Date Deposited : 24 Feb 2015 15:29
Last Modified : 16 Jan 2019 16:55

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