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EFFICIENT COMPUTATION OF SPATIAL FILTER MATRICES FOR STEERING TRANSMIT DIVERSITY IN A MIMO COMMUNICATION SYSTEM
EFFICIENT COMPUTATION OF SPATIAL FILTER MATRICES FOR STEERING TRANSMIT DIVERSITY IN A MIMO COMMUNICATION SYSTEM
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机译:MIMO通信系统中转向传输多样性的空间滤波矩阵的高效计算
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摘要
Techniques for efficiently computing spatial filter matrices are described. The channel response matrices for a MIMO channel may be highly correlated if the channel is relatively static over a range of transmission spans. In this case, an initial spatial filter matrix may be derived based on one channel response matrix, and a spatial filter matrix for each transmission span may be computed based on the initial spatial filter matrix and a steering matrix used for that transmission span. The channel response matrices may be partially correlated if the MIMO channel is not static but does not change abruptly. In this case, a spatial filter matrix may be derived for one transmission span and used to derive an initial spatial filter matrix for another transmission span m. A spatial filter matrix for transmission span m may be computed based on the initial spatial filter matrix, e.g., using an iterative procedure.
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