Blind signal recovery in multiuser MIMO-OFDM system
Blind signal recovery in multiuser MIMO-OFDM system
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DOI：
10.1109/mwscas.2004.1354239
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发表时间：
2004-07
期刊：
影响因子：
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通讯作者：
Bin Guo;Hai-Hsing Lin;K. Yamashita
中科院分区：
文献类型：
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作者：
Bin Guo;Hai-Hsing Lin;K. Yamashita
提出了一种MIMO-OFDM系统的盲信号恢复方法。该方法基于现有盲源分离（BSS）算法在具有多个发射和接收天线的OFDM系统中的信号检测中的应用，其中从频率仓（FB）的角度来看，传输可以被视为一组瞬时混合。虽然BSS算法可以成功地在FB级别分离不同的用户信号，但是BSS算法的排列不确定性阻碍了分离信号的信号重组。提出了一种利用传输信号的统计特性的方法来克服这些障碍。计算机模拟也证明了所提出方法的有效性。
A blind signal recovery method for MIMO-OFDM system is proposed. This method is based on an application of existing blind source separation (BSS) algorithms to the detection of the signals in OFDM system with multiple transmit-and-receive antenna, where the transmission can be treated as a set of instantaneous mixtures from the frequency bin (FB) viewpoint. Although the BSS algorithm can successfully separate different user signals at FB level, the permutation indeterminacy nature of BSS algorithm hinder the signal recomposition from the separated signals. A method taking advantage of the statistic characteristics of the transmitted signals is proposed to overcome these obstacles. Also the validity of the proposed method is demonstrated by computer simulations.