Patent
Multi-user precoding method and device
6
TL;DR: In this article, a multi-user MIMO precoding method for wireless communication is presented, which consists of the following steps: formulating consolidated data vector by using the data vectors which are needed to be sent to all users, overlapping the consolidated vector with disturbance vector to form disturbance consolidated data, forming linear transform matrix according to the obtained channel state information of all users.
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Abstract: The embodiment of the invention provides a multi-user precoding method and device and relates to the technical field of wireless communication, aiming to increasing the transmission efficiency of the system. The method comprises the following steps: forming consolidated data vector by using the data vectors which are needed to be sent to all users; overlapping the consolidated data vector with disturbance vector to form disturbance consolidated data vector; forming linear transform matrix according to the obtained channel state information of all users; and performing the linear transform of the disturbance consolidated data by using the linear transform matrix to form transmit signal vector. The embodiment of the invention is applicable to the multi-user MIMO precoding technology that each user has any number of receiving antennas.
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2
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TL;DR: In this paper, a method and an apparatus for estimation and feedback of channel matrix information is presented, which comprises the following steps of: carrying out filtering processing on an estimated channel matrix by a receiving terminal to obtain an equivalent channel matrix; selecting codebook matrixes matched with left singular matrixes of the equivalent channel matrices from a codebook matrices set of the receiving terminal according to the corresponding channel matrix.
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TL;DR: In this paper, a method and apparatus for determining an equalization weight value of an antenna array, and an electronic device is presented. But the method is limited to the case of a single antenna array.