Low-complexity precoding method for downlink multi-user multiple-input multiple-output (MIMO) system
A low-complexity, precoding technology, applied in the field of precoding, can solve the problem of high computational complexity, and achieve the effect of reducing the amount of calculation and avoiding the singular value decomposition of the matrix
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[0016] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0017] Such as figure 1 , a low-complexity precoding method in a downlink multi-user MIMO system, the system includes a base station and K users, and the base station is configured with N T root transmit antennas, user m is configured with N m Root receiving antennas, m=1, 2, ..., K, the total number of receiving antennas During the implementation process, we set the number of receiving antennas configured by each user to be 2, that is, N m =2, then the total number of receiving antennas is N R =KN m , set the number of transmitting antennas of the base station as the total number of receiving antennas, namely N T =N R .
[0018] According to the specific settings of the above-mentioned system, its precoding method is carried out according to the following steps:
[0019] Step 1: Set the channel model of the system to an N R...
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