Cooperative Relay Based on Exploiting Hybrid ARQ

作     者：Mingxuan Li Jie Lin Liang Zhong Mengting Wang Wei Lv 

作者机构：China University of Geosciences School of Mechanical Engineering and Electronic InformationDepartment of Electronics and Information EngineeringWuhan 430074China Air Force Early Warning AcademyWuhan 430010China 

出 版 物：《China Communications》 (中国通信（英文版）)

年 卷 期：2019年第16卷第9期

页      面：187-200页

核心收录：

学科分类：0810[工学-信息与通信工程] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0839[工学-网络空间安全] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China (No.61601334 61601509) 

主　　题：cognitive radio cooperative relay ARQ coexistence outage probability 

摘      要：In order to compensate the primary performance degradation,which is caused by the co-existing secondary communications or the heavy fading of primary link,a cooperative relay scheme is proposed in cognitive radio systems by taking advantage of the opportunities that are arisen by the primary ARQ(Automatic Repeat-reQuest)retransmission.With the help of this scheme,nontrivial relay assistances for the primary retransmission are achieved without initialization phase.The cooperation among secondary users provides additional spatial diversity to facilitate the primary transmission.This can be accomplished with an oblivious primary system and without assuming any non-causal information about the primary data.The scheme are further extended to the scenarios where multiple cognitive pairs exist.Performance analyses of the schemes are devised and the effectiveness is verified via simulations.