Exact Outage Performance Analysis of Multiuser Multi-relay Spectrum Sharing Cognitive Networks

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Provided by: Creative Commons
Topic: Networking
Format: PDF
In this paper, they investigate the outage performance of dual-hop multiuser multi-relay cognitive radio networks under spectrum sharing constraints. Using an efficient relay-destination selection scheme, the exact and asymptotic closed-form expressions for the outage probability are derived. From these expressions it is indicated that the achieved diversity order is only determined by the number of Secondary User (SU) relays and destinations and equals to the number of destination nodes and relay nodes, respectively). Further, they find that the coding gain of the SU network will be affected by the interference threshold at the Primary User (PU) receiver.
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