Title :
Outage Performance and Diversity Analysis for Multiuser Multi-relay Cognitive Radio Systems
Author :
Hu, Chunjing ; Yan, Zhi
Author_Institution :
Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecoms (BUPT), Beijing, China
Abstract :
In this paper, considering a multiuser multi-relay spectrum sharing cognitive radio system, the exact outage probability and diversity order for such a system are derived over Rayleigh fading channels. The theoretical analyses are validated by simulations. Both theoretical analyses and simulations show that the derived exact outage probability is accurate, and the diversity order is (M+1)N (where M is the number of relays and N is the number of users) for the selection decode-and-forward (SDF) protocol. It is indicated that both multi user selection diversity and multi-relay selection cooperative diversity can be achieved simultaneously for SDF protocol in spectrum sharing cognitive radio systems.
Keywords :
Rayleigh channels; cognitive radio; cooperative communication; decode and forward communication; diversity reception; multi-access systems; probability; protocols; radio spectrum management; Rayleigh fading channel; SDF protocol; diversity analysis; diversity order; multirelay selection cooperative diversity; multiuser multirelay spectrum sharing cognitive radio system; multiuser selection diversity; outage performance; outage probability; selection decode-and-forward protocol; Cognitive radio; Fading; Interference; Protocols; Relays; Signal to noise ratio; cognitive radio; diversity; multiuser; outage probability; relay;
Conference_Titel :
Computer Science and Electronics Engineering (ICCSEE), 2012 International Conference on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4673-0689-8
DOI :
10.1109/ICCSEE.2012.284
