Pre-coded vector determination method, device, base station and user terminal
A technology of precoding vector and user terminal, which is applied in the field of determining the precoding vector in base stations and user terminals, can solve the problems of multiple computing resources and consumption, and achieve the effect of realizing computing resources, simplifying applications and saving computing resources.
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[0027] In order to solve the problem that the method for determining the precoding vector provided by the prior art consumes more computing resources, the inventor has performed the following analysis on the method for determining the precoding vector provided by the prior art:
[0028] The precoding based on SVD decomposition is optimal, but the calculation amount of a typical SVD solution algorithm (which usually requires iteration) increases with the increase of the matrix dimension. In the case of a large number of transmitting antennas but a small number of transmission streams (in the LTE Rel.8 / 9 / 10 specification, single-stream and dual-stream transmission modes are specifically defined, and in the multi-user terminal transmission mode, each UE The number of transport streams does not exceed 2), and complete SVD decomposition is not necessary, because only the right singular vector corresponding to the largest n singular values is needed. In the enhanced multi-antenna sys...
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