Exact Outage Probability of Cognitive Underlay DF Relay Networks with Best Relay Selection

Vo Nguyen Quoc BAO  Trung Quang DUONG  

Publication
IEICE TRANSACTIONS on Communications   Vol.E95-B   No.6   pp.2169-2173
Publication Date: 2012/06/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
Keyword: 
decode-and-forward,  relay networks,  underlay approach,  interference constraints,  outage probability,  cognitive radio,  

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Summary: 
In this letter, we address the performance analysis of underlay selective decode-and-forward (DF) relay networks in Rayleigh fading channels with non-necessarily identical fading parameters. In particular, a novel result on the outage probability of the considered system is presented. Monte Carlo simulations are performed to verify the correctness of our exact closed-form expression. Our proposed analysis can be adopted for various underlay spectrum sharing applications of cognitive DF relay networks.