Analysis of Underlay Cognitive Radio Networks Based on Interference Cancellation Mechanism  

作　　者：Lei Wang Jian Liu Changming Zhao Alan Yang 

机构地区：[1]School of Computer&Communication Engineering,University of Science and Technology Beijing,Beijing,100083,China [2]School of Computer Science,Chengdu University of Information Technology,Chengdu,610225,China [3]College of Computer Science,Sichuan University,Chengdu,610041,China [4]Amphenol Assemble Tech,Houston,TX 77070,USA

出　　处：《Computers, Materials & Continua》2020年第4期401-416,共16页计算机、材料和连续体（英文）

基　　金：This work is supported by Sichuan science and Technology Program(2019YFG0212);China Postdoctoral Science Foundation(2019M653401);Sichuan Science and Technology Program(2018GZ0184).

摘　　要：In this paper,we investigate the performance of secondary transmission scheme based on Markov ON-OFF state of primary users in Underlay cognitive radio networks.We propose flexible secondary cooperative transmission schemewith interference cancellation technique according to the ON-OFF status of primary transmitter.For maximal ratio combining(MRC)at destination,we have derived exact closed-form expressions of the outage probability in different situations.The numerical simulation results also reveal that the proposed scheme improve the secondary transmission performance compared with traditional mechanism in terms of secondary outage probability and energy efficiency.

关 键 词：Cognitive radio Markov ON-OFF state relay selection outage probability 

分 类 号：TN9[电子电信—信息与通信工程]