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

研究成果: 書貢獻/報告類型會議論文篇章同行評審

2 引文 斯高帕斯(Scopus)

摘要

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.

原文???core.languages.en_GB???
主出版物標題2011 IEEE Wireless Communications and Networking Conference, WCNC 2011
頁面1759-1764
頁數6
DOIs
出版狀態已出版 - 2011
事件2011 IEEE Wireless Communications and Networking Conference, WCNC 2011 - Cancun, Mexico
持續時間: 28 3月 201131 3月 2011

出版系列

名字2011 IEEE Wireless Communications and Networking Conference, WCNC 2011

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???event.eventtypes.event.conference???2011 IEEE Wireless Communications and Networking Conference, WCNC 2011
國家/地區Mexico
城市Cancun
期間28/03/1131/03/11

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