Title :
Outage analysis of cognitive relaying with multiple receive antennas
Author :
Wu, Yan ; Yang, Qinghai ; Chen, Jian ; Fu, Fenglin ; Kwak, Kyung Sup
Author_Institution :
State Key Lab. on ISN, Xidian Univ., Xi´´an, China
Abstract :
We investigate the outage performance of multi-antenna cognitive wireless relay networks where source nodes transmit information to their destinations via two hops facilitated by intermediate cognitive nodes able to acquire spectrum holes. In particular, we conduct an outage performance analysis for a decode-and-forward (DF) relaying system under three scenarios which are depending on the spectrum acquisition capability of cognitive relay nodes in each cluster. A closed-form expression of the outage probability is derived under Rayleigh fading channels for all signal to noise ratio (SNR) regimes. It is showed that by using multiple antennas into such networks the outage performance improves significantly.
Keywords :
Rayleigh channels; antenna arrays; cognitive radio; receiving antennas; telecommunication network reliability; Rayleigh fading channels; closed-form expression; cognitive relay nodes; decode-and-forward relaying system; intermediate cognitive nodes; multiantenna cognitive wireless relay networks; outage performance analysis; signal to noise ratio; source nodes; spectrum acquisition capability; spectrum holes; Closed-form solution; Cognitive radio; Decoding; Fading; Laboratories; MIMO; Receiving antennas; Relays; Signal to noise ratio; Wireless networks; Cognitive radio; MIMO; Outage-probability; Rayleigh fading; Relay networks;
Conference_Titel :
Communications and Networking in China, 2009. ChinaCOM 2009. Fourth International Conference on
Conference_Location :
Xian
Print_ISBN :
978-1-4244-4337-6
Electronic_ISBN :
978-1-4244-4337-6
DOI :
10.1109/CHINACOM.2009.5339960
