NDLI: Secure Cognitive Relay Network: Joint the Impact of Imperfect Spectrum Sensing and Outdated Feedback

Content Provider	Springer Nature Link
Author	Wang, Xinjie Li, Enyu Ha, Dac Binh Hoang, Tiep Minh Zhang, Hao
Copyright Year	2015
Abstract	In this paper, we consider cognitive relay networks with Nth best relay and beamforming schemes under the joint impact of imperfect spectrum sensing and outdated channel feedback. Specifically, we examine the secrecy performance by deriving the exact and asymptotic analytical expressions for the secrecy outage probability. Based on the analysis, we observe that these two types of channel impairments, i.e., imperfect spectrum sensing and outdated channel feedback, greatly affect the system performance. Particularly, the outdated channel feedback (i.e., the outdated coefficient $$\rho\,<\,1$$ ) reduces the secrecy outage diversity gain of the two schemes, i.e., Nth best relay and beamforming, to one regardless of the number of relays. Our proposed analysis provides a helpful guideline for security system designers to cope with the unpleasant channel impairments.
Starting Page	165
Ending Page	192
Page Count	28
File Format	PDF
ISSN	09296212
Journal	Wireless Personal Communications
Volume Number	87
Issue Number	1
e-ISSN	1572834X
Language	English
Publisher	Springer US
Publisher Date	2015-08-26
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cognitive relay network Physical layer security Imperfect spectrum sensing Outdated feedback Secrecy outage probability Communications Engineering, Networks Signal, Image and Speech Processing Computer Communication Networks
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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