Modeling multiuser spectrum allocation for cognitive radio networks

- Bin Shahid, Mohammad, Kamruzzaman, Joarder, Hassan, Md Rafiul

Title
Modeling multiuser spectrum allocation for cognitive radio networks
Creator
Bin Shahid, Mohammad; Kamruzzaman, Joarder; Hassan, Md Rafiul
Date
2016
Type
Text; Journal article
Identifier
http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/102450
Identifier
vital:10798
Identifier
https://doi.org/10.1016/j.compeleceng.2015.10.006
Identifier
ISSN:0045-7906
Abstract
Spectrum allocation scheme in cognitive radio networks (CRNs) becomes complex when multiple CR users concomitantly need to be allocated new and suitable bands once the primary user returns. Most existing schemes focus on the gain of individual users, ignoring the effect of an allocation on other users and rely on the 'periodic sensing and transmission' cycle which reduces spectrum utilization. This paper introduces a scheme that exploits collaboration among users to detect PU's return which relieves active CR users from the sensing task, and thereby improves spectrum utilization. It defines a Capacity of Service (CoS) metric based on the optimal sensing parameters which measures the suitability of a band for each contending user and takes into consideration the impact of allocating a particular band on other band seeking users. The proposed scheme significantly improves capacity of service, reduces interference loss and collision, and hence, enhances dynamic spectrum access capabilities. (C) 2015 Elsevier Ltd. All rights reserved.
Publisher
Elsevier Ltd
Relation
Computers & Electrical Engineering Vol. 52, no. (2016), p. 266-283
Rights
Copyright ©2015 Elsevier Ltd. All rights reserved.
Rights
This metadata is freely available under a CCO license
Subject
0803 Computer Software; 0805 Distributed Computing; 0906 Electrical and Electronic Engineering; Cognitive radio networks; Spectrum allocation; Dynamic spectrum access; Cooperative spectrum sensing; Spectrum utilizations; Interference loss
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