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Maximum-Likelihood MIMO Demodulation for Frequency-Selective Channels

机译:选频信道的最大似然MIMO解调

摘要

A method is described that enables maximum-likelihood (ML) demodulation for MIMO communications over frequency-selective channels. An equalizer is typically employed to suppress inter-symbol interference (ISI) due to frequency-selectiveness of the channel, but the noise of the equalizer output can be highly correlated such that standard ML-MIMO demodulations cannot directly apply. The method comprises first constructing equivalent post-equalization MIMO channel and noise covariance matrix, and then de-correlating the equalizer output so that ML or near-ML MIMO demodulations can be applied to improve the performance. Additionally, successive ISI cancellation (SIC) is described for further performance improvement.
机译:描述了一种方法,该方法为频率选择信道上的MIMO通信启用最大似然(ML)解调。由于信道的频率选择性,通常采用均衡器来抑制符号间干扰(ISI),但是均衡器输出的噪声可能高度相关,因此标准ML-MIMO解调不能直接应用。该方法包括首先构造等效的均衡后的MIMO信道和噪声协方差矩阵,然后对均衡器输出进行解相关,以便可以应用ML或接近ML的MIMO解调来改善性能。此外,描述了连续的ISI取消(SIC),以进一步提高性能。

著录项

  • 公开/公告号US2012263222A1

    专利类型

  • 公开/公告日2012-10-18

    原文格式PDF

  • 申请/专利权人 XIAO-AN WANG;

    申请/专利号US201113087943

  • 发明设计人 XIAO-AN WANG;

    申请日2011-04-15

  • 分类号H04L27/06;H04B1/10;H04L27/01;

  • 国家 US

  • 入库时间 2022-08-21 17:35:04

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