Service coverage for cognitive radio networks with cooperative relays in shadowed hotspot areas

Meng Lin Ku*, Qingchun Chen, Saeed S. Ghassemzadeh, Vahid Tarokh, Li-Chun Wang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

In this paper, we investigate the service coverage for interweaving cognitive radio networks with cooperative relays in shadowed areas within the metropolitan region. We highlight the influence of relays on the primary and secondary systems in severe shadow fading channels. The outage probability is utilized as a comprehensive performance metric to characterize the coverage quality for the cognitive radio system with relays. We show that cooperative spectrum sensing among the secondary transmitter and relays can improve the vacant spectrum detection probability and the false alarm probability, thereby making the additionally introduced interference by relays to be constrained within a tolerable limit. Overall, our analysis unveils that both the spectrum utilization rate and the spatial coverage can be significantly improved through the use of the relays, and there exists the spatial selectivity phenomena for both the primary and secondary systems.

Original languageEnglish
Title of host publication2011 IEEE Wireless Communications and Networking Conference, WCNC 2011
Pages1759-1764
Number of pages6
DOIs
StatePublished - 23 Jun 2011
Event2011 IEEE Wireless Communications and Networking Conference, WCNC 2011 - Cancun, Mexico
Duration: 28 Mar 201131 Mar 2011

Publication series

Name2011 IEEE Wireless Communications and Networking Conference, WCNC 2011

Conference

Conference2011 IEEE Wireless Communications and Networking Conference, WCNC 2011
CountryMexico
CityCancun
Period28/03/1131/03/11

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