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SER Performance of Enhanced Spatial Multiplexing Codes with ZF/MRC Receiver in Time-Varying Rayleigh Fading Channels

机译:时变瑞利衰落信道中具有ZF / MRC接收器的增强型空间复用码的SER性能

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摘要

We propose enhanced spatial multiplexing codes (E-SMCs) to enable various encoding rates. The symbol error rate (SER) performance of the E-SMC is investigated when zero-forcing (ZF) and maximal-ratio combining (MRC) techniques are used at a receiver. The proposed E-SMC allows a transmitted symbol to be repeated over time to achieve further diversity gain at the cost of the encoding rate. With the spatial correlation between transmit antennas, SER equations for M-ary QAM and PSK constellations are derived by using a moment generating function (MGF) approximation of a signal-to-noise ratio (SNR), based on the assumption of independent zero-forced SNRs. Analytic and simulated results are compared for time-varying and spatially correlated Rayleigh fading channels that are modelled as first-order Markovian channels. Furthermore, we can find an optimal block length for the E-SMC that meets a required SER.
机译:我们提出增强的空间复用码(E-SMC)以实现各种编码率。当在接收器处使用零强制(ZF)和最大比率合并(MRC)技术时,将研究E-SMC的符号错误率(SER)性能。所提出的E-SMC允许在时间上重复发送的符号,从而以编码速率为代价获得进一步的分集增益。利用发射天线之间的空间相关性,基于独立零噪声的假设,通过使用信噪比(SNR)的矩生成函数(MGF)近似,可以得出M元QAM和PSK星座图的SER方程。强制SNR。对于时变和空间相关的瑞利衰落信道(模型化为一阶马尔可夫信道),将分析和仿真结果进行比较。此外,我们可以找到满足所需SER的E-SMC的最佳块长度。

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  • 作者

    In-Ho Lee;

  • 作者单位
  • 年(卷),期 -1(2014),-1
  • 年度 -1
  • 页码 537272
  • 总页数 12
  • 原文格式 PDF
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