Resource allocation in multiple DF relay assisted OFDM cognitive radio relay networks with the knowledge of fading statistics

In this paper, we study relay selection and power allocation in multiple decode-and-forward (DF) relay assisted OFDM cognitive radio (CR) relay networks. We consider the scenario where only the fading statistics between the cognitive and primary users are known at the CR transmitters. The objective...

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Bibliographic Details
Published in:2013 IEEE TENCON Spring Conference pp. 406 - 410
Main Authors: Biyanwilage, Shashika, Gunawardana, Upul, Liyanapathirana, Ranjith
Format: Conference Proceeding
Language:English
Published: IEEE 01.04.2013
Subjects:
Cognitive radio
Fading
Interference
OFDM
Receivers
Relays
Resource management
ISBN:1467363472, 9781467363471
Online Access:Get full text
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Summary:In this paper, we study relay selection and power allocation in multiple decode-and-forward (DF) relay assisted OFDM cognitive radio (CR) relay networks. We consider the scenario where only the fading statistics between the cognitive and primary users are known at the CR transmitters. The objective of resource allocation is to maximize the instantaneous capacity of the CR network when the primary users are subject to an average interference constraint and the CR transmitters are subject to maximum transmit power constraint. The joint optimization is a mixed binary integer programming problem which is NP-hard. Thus, we propose a simple suboptimal resource allocation method.
ISBN:1467363472
9781467363471
DOI:10.1109/TENCONSpring.2013.6584480