| 摘要 |
<p>Disclosed are a method, a device and a system for weighting a multiple-input multiple-output (MIMO) transmission signal. The method comprises: receiving a codebook index fed back by a receiver, so as to obtain a codebook matrix; and obtaining a channel matrix according to a characteristic of reciprocity of uplink and downlink channels, and calculating a characteristic vector of the channel matrix, so as to obtain a characteristic vector matrix; performing a calculation according to a formula i, and calculating a characteristic vector of R, so as to obtain a weighting matrix, Xi being a codebook matrix, a formula ii being a conjugate transpose matrix of the codebook matrix, i being greater than or equal to 0 and less than or equal to M-1, M being the number of the codebook matrixes, M being greater than or equal to 1, Yj being a characteristic vector matrix, formula iii being a conjugate transpose matrix of the characteristic vector matrix, j being greater than or equal to 0 and less than or equal to N-1, N being the number of the characteristic vector matrixes, N being greater than or equal to 1, ai and bj being weight parameters, and ai and bj capable of being set according to actual requirements; and the size of a spatial dimension of a formula iv being equal to that of a formula v; and weighting a transmission signal by using the weighting matrix, and sending the transmission signal.</p> |
