Optimal channel sensing in wireless communication networks with cognitive radio

Authors:
Jun Cai;Attahiru S. Alfa
Affiliations:
Department of Electrical and Computer Engineering, University of Manitoba, Winnipeg, MB, Canada;Department of Electrical and Computer Engineering, University of Manitoba, Winnipeg, MB, Canada
Venue:
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Year:
2009

Citing 4
Cited 1

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Decentralized cognitive MAC for opportunistic spectrum access in ad hoc networks: A POMDP framework

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Cognitive Medium Access: Constraining Interference Based on Experimental Models

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HC-MAC: A Hardware-Constrained Cognitive MAC for Efficient Spectrum Management

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Analysis of a contention-based opportunistic spectrum access under general channel activity model

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Abstract

In this paper, designing channel sensing policies for cognitive radio networks is discussed. A discrete-time semi-Markov channel model is first introduced, which facilitates the analysis on more general channel occupancy behaviors and possible asynchronism among primary and secondary users. Based on the characteristics of the channels at the stationary state, multiple channel sensing policies have been proposed for different network scenarios with homogeneous channels, heterogeneous channels, and sequential channel sensing. Both analytical and simulation results are given to demonstrate the effectiveness of the proposed channel sensing policies.