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Decision-feedback subset aided multiple-symbol differential detection
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作者 Wang Chanfei Xu Yamei Xu Lei 《High Technology Letters》 EI CAS 2020年第1期98-101,共4页
In view of the inaccuracy of the estimated symbols on the edge of the observation window, a decision-feedback subset aided multiple-symbol differential detection(MSDD) framework, dubbed DF-S-MSDD, is proposed in ultra... In view of the inaccuracy of the estimated symbols on the edge of the observation window, a decision-feedback subset aided multiple-symbol differential detection(MSDD) framework, dubbed DF-S-MSDD, is proposed in ultra-wideband impulse radio(UWB-IR) system with differential space-time block-code(DSTBC) modulation. Specifically, motivated by the decision-feedback aided MSDD(DF-MSDD), a subset of the decision-feedback symbols is selected, and the optimal symbols are preserved, and then all the remaining symbols are optimized. Furthermore, the simulations validate that the proposed DF-S-MSDD provides solid bit error-rate performance with a low complexity in UWB-IR system with DSTBC modulation. 展开更多
关键词 multiple-symbol DIFFERENTIAL detection(MSDD) decision-feedback(DF) decision-feedback SUBSET ultra-wideband IMPULSE radio(UWB-IR) DIFFERENTIAL SPACE-TIME block-code(DSTBC)
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Semidefinite relaxation aided noncoherent detection in two-way relay transmission 被引量:2
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作者 Chan-fei WANG Ji-ai HE +1 位作者 Wei-fang WANG Ya-mei XU 《Frontiers of Information Technology & Electronic Engineering》 SCIE EI CSCD 2019年第9期1259-1265,共7页
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 det... 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. 展开更多
关键词 multiple-symbol differential detection Generalized LIKELIHOOD ratio test SEMIDEFINITE RELAXATION Two-way RELAY TRANSMISSION
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