Outage Performance for Cognitive Relay Networks with Underlay Spectrum Sharing

The outage performance is investigated for a cognitive relay system with underlay spectrum sharing model. It is shown that the dependence among the received SNRs is introduced due to the interference power constraint. The joint probability of the received SNRs is derived. By considering the dependen...

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Veröffentlicht in:	IEEE communications letters 2011-07, Vol.15 (7), p.710-712
Hauptverfasser:	Luo, Liping, Zhang, Ping, Zhang, Guangchi, Qin, Jiayin
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Approximation methods Coding, codes Cognitive radio Cognitive relay Decoding Exact sciences and technology Information, signal and communications theory Interference Joints lower bound outage probability Relays Signal and communications theory Simulation Telecommunications and information theory underlay spectrum sharing
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Beschreibung
Zusammenfassung:	The outage performance is investigated for a cognitive relay system with underlay spectrum sharing model. It is shown that the dependence among the received SNRs is introduced due to the interference power constraint. The joint probability of the received SNRs is derived. By considering the dependence for the case of null decoding set, a tight lower bound on the outage probability is obtained. Simulation results are presented to verify the theoretical analyses.
ISSN:	1089-7798 1558-2558
DOI:	10.1109/LCOMM.2011.051011.110426