Analysis of Underlay Cognitive Radio Networks Based on Interference Cancellation Mechanism

作     者：Lei Wang Jian Liu Changming Zhao Alan Yang 

作者机构：School of Computer&Communication EngineeringUniversity of Science and Technology BeijingBeijing100083China School of Computer ScienceChengdu University of Information TechnologyChengdu610225China College of Computer ScienceSichuan UniversityChengdu610041China Amphenol Assemble TechHoustonTX 77070USA 

出 版 物：《Computers, Materials & Continua》 (计算机、材料和连续体（英文）)

年 卷 期：2020年第63卷第4期

页      面：401-416页

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

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

主　　题：Cognitive radio Markov ON-OFF state relay selection outage probability 

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 *** propose flexible secondary cooperative transmission schemewith interference cancellation technique according to the ON-OFF status of primary *** maximal ratio combining(MRC)at destination,we have derived exact closed-form expressions of the outage probability in different *** 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.