Error exponents for two-hop Gaussian multiple source-destination relay channels  

作　　者：DENG PanLiang LIU YuanAn XIE Gang WANG XiaoYu TANG BiHua SUN JianFeng 

机构地区：[1]School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China [2]School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China [3]Key Laboratory of Universal Wireless Communication, Ministry of Education, Beijing 100876, China

出　　处：《Science China(Information Sciences)》2012年第2期348-359,共12页中国科学（信息科学）（英文版）

基　　金：supported in part by Sino-Swedish IMT-Advanced Cooperation Project(Grant No.2008DFA11780);Canada-China Scientific and Technological Cooperation(Grant No.2010DFA11320);National Natural Science Foundation of China(Grant Nos.60802033,60873190);National High Technology Research and Development Program of China(Grant No.2008AA01Z211);Fundamental Research Funds for the Central Universities(Grant Nos.2009RC0308,G470209)

摘　　要：We investigate the two-hop multiple source-destination relay channels using the rate splitting trans- mission scheme where each source can split its message into private and public parts. We determine the system error probability via integrated exponent function under amplify-and-forward （AF） and decode-and-forward （DF） relay strategies. The most significant difference between AF and DF system error probability evaluations lies in a minimized cut-set bound of transmission rate under the DF strategy. There are many cases among transmission rate intervals for different system parameters （e.g. transmit power） and it is extremely complex to derive the system error probability for the DF strategy. We obtain a relatively simple result, which unifies various cases by a few expressions. Numerical results show that the system error probability decreases with the increase of the public message. Moreover, in order to draw deep insight into the reliability requirement of each source node in this network, we provide the error exponent region （EER） for different source nodes to show the trade-off of error probability among source nodes.We investigate the two-hop multiple source-destination relay channels using the rate splitting trans- mission scheme where each source can split its message into private and public parts. We determine the system error probability via integrated exponent function under amplify-and-forward （AF） and decode-and-forward （DF） relay strategies. The most significant difference between AF and DF system error probability evaluations lies in a minimized cut-set bound of transmission rate under the DF strategy. There are many cases among transmission rate intervals for different system parameters （e.g. transmit power） and it is extremely complex to derive the system error probability for the DF strategy. We obtain a relatively simple result, which unifies various cases by a few expressions. Numerical results show that the system error probability decreases with the increase of the public message. Moreover, in order to draw deep insight into the reliability requirement of each source node in this network, we provide the error exponent region （EER） for different source nodes to show the trade-off of error probability among source nodes.

关 键 词：error exponent error exponent region rate splitting multiple source-destination relay channel 

分 类 号：TN915.61[电子电信—通信与信息系统] S275[电子电信—信息与通信工程]