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Enable Secondary User Spectrum Access in Cooperative Communication Scheme with Rayleigh Fading Channel  

Kim, Lyum (울산대학교 전기전자정보시스템공학과)
Kong, Hyung-Yun (울산대학교 전기전자정보시스템공학과)
Publication Information
The Journal of the Institute of Internet, Broadcasting and Communication / v.10, no.5, 2010 , pp. 113-119 More about this Journal
Abstract
In this paper, the considered cognitive radio system has a pair of PT-PR and a pair of ST-SR. In first time slot(1 Phase), PT broadcast signal $x_p$ to PR, ST and SR. Then, each receivers(PR, ST, SR) decode received signal $x_p$. In second time slot(2 Phase), ST combine decoded signal ${x_p}^{\prime}$ and signal $x_s$, and it broadcast combined signal to PR and SR. PR and SR decode combined signal. At this time, PR can achieve diversity gain, due to using MRC, it combine 'received and decoded signal ${x_p}^{\prime}$ at 1 phase' and 'detected signal $x_p$ at 2 phase'. SR use linear combining technique and it can obtain $x_s$.
Keywords
Cooperative communication; Cognitive radio; Maximal Ratio Combining; decode-and-forward relaying; Bit Error Rate;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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