DocumentCode
1374112
Title
Exact Outage Performance of Cognitive Relay Networks with Maximum Transmit Power Limits
Author
Yan, Zhi ; Zhang, Xing ; Wang, Wenbo
Author_Institution
Sch. of Inf. & Commun. Eng., Beijing Univ. of Posts & Telecommun., Beijing, China
Volume
15
Issue
12
fYear
2011
fDate
12/1/2011 12:00:00 AM
Firstpage
1317
Lastpage
1319
Abstract
In this letter, considering a cognitive relay network with the maximum transmit power limit in a spectrum sharing scenario, the exact outage probability of secondary system is derived over Rayleigh fading channels, and the theoretical analysis is validated by simulations. The results show that both the maximum transmit power limit and the interference power constraint cause the outage saturation phenomenon, and more relays for secondary system can provide better outage performance.
Keywords
Rayleigh channels; cognitive radio; probability; radio spectrum management; Rayleigh fading channel; cognitive relay network; exact outage performance; exact outage probability; outage saturation phenomenon; secondary system; spectrum sharing scenario; Cognitive radio; Decoding; Interference; Protocols; Relays; Signal to noise ratio; Simulation; Congtive relay networks; outage probability; outage saturation phenomenon; spectrum sharing;
fLanguage
English
Journal_Title
Communications Letters, IEEE
Publisher
ieee
ISSN
1089-7798
Type
jour
DOI
10.1109/LCOMM.2011.103111.111563
Filename
6078371
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