Cognitive amplify-and-forward dual-hop relay networks over α-μ fading channels  

认知两跳AF中继网络在α-μ衰落信道下的性能分析（英文）

作　　者：HAN Yan-bo GAO Li YAN Wen-hua 韩彦博;高丽;闫文华(兰州交通大学电子与信息工程学院,甘肃兰州730070)

机构地区：[1]School of Electronic and Information Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China

出　　处：《Journal of Measurement Science and Instrumentation》2019年第1期69-75,共7页测试科学与仪器（英文版）

基　　金：National Natural Science Foundation of China(No.61461024)

摘　　要：This paper provides an analytic performance evaluation of dual-hop cognitive amplify-and-forward (AF) relaying networks over independent nonidentically distributed (i.n.i.d.) fading channels. Two different transmit power constraint strategies at the secondary network are proposed to investigate the performance of the secondary network. In the case of combined power constraint,the maximum tolerable interference power on the primary network and the maximum transmit power at the secondary network are considered. Closed-form lower bound and its asymptotic expression for the outage probability (OP) are achieved. Utilizing the above results,average symbol error probability (ABEP) at high signal-to-noise ratios (SNRs) are also derived. In order to further study the performance of dual-hop cognitive AF relaying networks,the Closed-form lower bounds and asymptotic expressions for OP with single power constraint of the tolerable interference on the primary network is also obtained. Both analytical and simulation are employed to validate the accuracy of the theoretical analysis. The results show that the secondary network obtains a better performance when higher power constraint is employed.

关 键 词：cognitive relay network amplify-and-forward relay outage probability α-μ fading channels 

分 类 号：TN925[电子电信—通信与信息系统]