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Erschienen in: Wireless Personal Communications 4/2015

01.06.2015

Optimal Cooperative Spectrum Sensing in Interference-Aware Cognitive Radio Networks

verfasst von: Fei Song, Changju Kan, Qihui Wu, Guoru Ding

Erschienen in: Wireless Personal Communications | Ausgabe 4/2015

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Abstract

In order to protect the primary user from being interfered, most of the related works focus only on the restriction of the missed detection probability, which may cause over-protection of the primary user. Thus the interference probability is defined and the interference-aware sensing model is introduced in this paper. The interference-aware sensing model takes the spatial conditions into consideration, and can further improve the network performance with a good spectrum reuse opportunity. Meanwhile, although the detection performance can be further improved by the cooperative spectrum sensing, it also introduces additional reporting time corresponding to the number of cooperative users (CUs), which may decrease the throughput of the CRN. Motivated by the above, in this paper, we study the throughput tradeoff for interference-aware cognitive radio networks. For cooperative spectrum sensing, the Logic-OR fusion rule is used. By jointly optimizing the sensing time and the number of the CUs, the maximum throughput can be achieved. Theoretical analysis is given to prove the feasibility of the optimization and numerical simulations also show that the maximum throughput can be achieved when the sensing time and the number of the CUs are both optimized.

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Metadaten
Titel
Optimal Cooperative Spectrum Sensing in Interference-Aware Cognitive Radio Networks
verfasst von
Fei Song
Changju Kan
Qihui Wu
Guoru Ding
Publikationsdatum
01.06.2015
Verlag
Springer US
Erschienen in
Wireless Personal Communications / Ausgabe 4/2015
Print ISSN: 0929-6212
Elektronische ISSN: 1572-834X
DOI
https://doi.org/10.1007/s11277-015-2340-3

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