Title :
Outage Probability Analysis of Cognitive Relay Networks in Nakagami-m Fading Channels
Author :
Zhang, Yifan ; Xie, Yin ; Liu, Yang ; Feng, Zhiyong ; Zhang, Ping ; Wei, Zhiqing
Author_Institution :
Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
In spectrum sharing systems, a secondary user (SU) is permitted to share frequency bands with a primary user (PU) as long as its transmission does not interfere with the PU´s communication. In this paper, the outage probability is investigated for the cognitive relay system over Nakagami-m fading channel. By applying the interference temperature constraints at the source nodes and relay nodes in secondary systems, we analyze the outage performance in two-hop underlay spectrum sharing with the best relay selection criterion. The probability density function (PDF) and cumulative distribution function (CDF) of the signal to noise ratio (SNR) at the SU´s receiver are derived to obtain the closed-form upper bound of the outage probability of the secondary relay system. Simulations results demonstrate the validity and accuracy of the theoretical analysis.
Keywords :
Nakagami channels; cognitive radio; probability; radio spectrum management; relay networks (telecommunication); Nakagami-m fading channels; cognitive relay networks; cumulative distribution function; interference temperature constraints; outage probability analysis; primary user; probability density function; relay nodes; secondary relay system; secondary user; signal to noise ratio; source nodes; two-hop underlay spectrum sharing; Fading; Interference channels; Receivers; Relays; Signal to noise ratio; Wireless communication;
Conference_Titel :
Vehicular Technology Conference (VTC Fall), 2012 IEEE
Conference_Location :
Quebec City, QC
Print_ISBN :
978-1-4673-1880-8
Electronic_ISBN :
1090-3038
DOI :
10.1109/VTCFall.2012.6398938
