Semidefinite relaxation aided noncoherent detection in two-way relay transmission  

双向中继传输中基于半定松弛的非相干检测（英文）

作　　者：Chan-fei WANG Ji-ai HE Wei-fang WANG Ya-mei XU 

机构地区：[1]School of Computer and Communication,Lanzhou University of Technology,Lanzhou 730050,China

出　　处：《Frontiers of Information Technology & Electronic Engineering》2019年第9期1259-1265,共7页信息与电子工程前沿（英文版）

基　　金：the Hongliu Excellent Youth Talent Support Program of Lanzhou University of Technology and the National Natural Science Foundation of China(Nos.61561031 and 61562058)。

摘　　要：A high-performance noncoherent transmission scheme is proposed in the broadcasting phase of a twoway relay transmission(TWRT),where multiple-symbol differential detection(MSDD)is performed because of its excellent detection performance with no channel estimation.Specifically,the generalized likelihood ratio test aided MSDD(GLRT-MSDD)is developed for the down-link.Furthermore,GLRT-MSDD is reformulated and a semidefinite relaxation aided MSDD(SDR-MSDD)is proposed.The reformulation of GLRT-MSDD to SDR-MSDD is desirable owing to its reduced complexity.Performance analysis and the simulations validate that the proposed SDR-MSDD provides the bit-error-rate performance close to that of GLRT-MSDD with reasonable complexity in TWRT.A high-performance noncoherent transmission scheme is proposed in the broadcasting phase of a twoway relay transmission(TWRT), where multiple-symbol differential detection(MSDD) is performed because of its excellent detection performance with no channel estimation. Specifically, the generalized likelihood ratio test aided MSDD(GLRT-MSDD) is developed for the down-link. Furthermore, GLRT-MSDD is reformulated and a semidefinite relaxation aided MSDD(SDR-MSDD) is proposed. The reformulation of GLRT-MSDD to SDR-MSDD is desirable owing to its reduced complexity. Performance analysis and the simulations validate that the proposed SDR-MSDD provides the bit-error-rate performance close to that of GLRT-MSDD with reasonable complexity in TWRT.

关 键 词：Multiple-symbol differential detection Generalized LIKELIHOOD ratio test SEMIDEFINITE RELAXATION Two-way RELAY TRANSMISSION 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]