Title :
Outage performance of SIMO multiple access cognitive radio channel
Author :
Sarkar, Md Zahurul I ; Ratnarajah, T. ; Sellathurai, M. ; Cowan, C.F.N.
Author_Institution :
ECIT, Queen´´s Univ. Belfast, Belfast, UK
Abstract :
In this paper, we consider a cognitive relay assisted single-input multiple-output (SIMO) communication scenario through Rayleigh fading channel where multiple primary and secondary users wish to communicate with two different receivers in the presence of a cognitive relay. We assume that secondary users transmit simultaneously with the primary users over the same channel instead of waiting for an idle channel which is traditional for a cognitive radio. We consider both the cases when cognitive relay is present or not and derive the expressions for the mutual information received at the primary and secondary receivers. We also present the closed form expressions for the outage probabilities and complementary cumulative distribution functions (CCDFs) of mutual information received at the primary and secondary receivers in the absence of cognitive relay.
Keywords :
Rayleigh channels; cognitive radio; multi-access systems; probability; radio receivers; Rayleigh fading channel; SIMO multiple access cognitive radio channel; cognitive relay; complementary cumulative distribution functions; idle channel; outage probability; primary receivers; secondary receivers; Fading; Interference; Mutual information; Numerical models; Receiving antennas; Relays; Cognitive relay; SIMO multiple access channel; outage performance and non-causal knowledge;
Conference_Titel :
Cognitive Wireless Systems (UKIWCWS), 2010 Second UK-India-IDRC International Workshop on
Conference_Location :
New Delhi
Print_ISBN :
978-1-4244-9146-9
DOI :
10.1109/UKIWCWS.2010.5724223