文章基本信息

标题：Downlink Cooperative Transmission by Superposition Modulation: Performance Analysis and Power Allocation Strategy
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作者：Jia, De-Li ; Wu, Gang ; Lin, Wei 等
期刊名称：Journal of Communications
印刷版ISSN：1796-2021
出版年度：2010
卷号：5
期号：4
页码：332-339
DOI：10.4304/jcm.5.4.332-339
语种：English
出版社：ACADEMY PUBLISHER
摘要：In this paper, we proposed 2 new downlink cooperative transmission strategies based on superposition modulations: Scheme (a), QPSK superimposed modulation and scheme (b), orthogonal 4-PAM superimposed modulation. In both schemes, Rayleigh fading and path loss effect are introduced into channel model. We analyzed the symbol error rate (SER) performances and derived their theoretical expressions. The analytical SER expression of scheme (b) is achieved. Furthermore, we investigated the optimal power allocation problem through both analytical and numerical approach. Finally, the derived analytical expressions were verified by simulation results. Our proposed superposition scheme (b) can outperform the classical downlink cooperative scheme by 2 dB, and the performance advantage of Scheme (a) achieves by 5 dB.
关键词：cooperative transmission; superposition modulation;power allocation; SER