NDLI: Cooperative spectrum sensing using amplify-and-forward relaying with partial relay selection in cognitive radio networks

Content Provider	Springer Nature Link
Author	Ren, Defeng Ge, Jianhua Li, Jing
Copyright Year	2013
Abstract	Cooperative spectrum sensing has been shown to be an effective approach to improve the detection performance by exploiting the spatial diversity among multiple cognitive nodes. By using the amplify-and-forward relaying with partial relay selection, this paper proposes a novel cooperative spectrum sensing scheme, which provides higher detection performance and is interesting in distributed cognitive radio networks. In the proposed sensing scheme, the “best” cognitive relay by means of partial relay selection technique amplifies and forwards the signals transmitted from the primary user (PU) to the cognitive user (CU). Then the CU detects PU’s states (i.e., presence or absence) via an energy detector. Moreover, the average missed-detection probability of proposed sensing scheme is studied over Nakagami-m fading channels, where m is a positive integer. In particular, the tight closed-form lower bounds of the average missed-detection probability are presented for the convenience of performance evaluation in practice. Finally, numerical results are provided to validate the derived closed-form lower bounds and the influence of the number of cognitive relays on the detection performance is also discussed.
Starting Page	861
Ending Page	870
Page Count	10
File Format	PDF
ISSN	10220038
Journal	Wireless Networks
Volume Number	20
Issue Number	5
e-ISSN	15728196
Language	English
Publisher	Springer US
Publisher Date	2013-10-17
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cognitive radio network Cooperative spectrum sensing Cognitive relay Amplify-and-forward Partial relay selection Communications Engineering, Networks Computer Communication Networks Electrical Engineering Business Information Systems
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications Information Systems Electrical and Electronic Engineering

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