A method, system and device for antenna calibration

Abstract

Embodiments of the present invention relate to the field of wireless communication technologies, and in particular to a method, system, and device for antenna calibration, which are used to solve the problem in the prior art that the user equipment needs to feed back channel coefficients in the air interface calibration method in which the user equipment participates. The method of directly quantizing channel coefficients will occupy a large uplink overhead and reduce system efficiency. The method in the embodiment of the present invention includes: the user equipment performs downlink channel measurement and determines the downlink channel matrix; the user equipment determines the first weighted matrix for antenna calibration according to the downlink channel matrix; the user equipment notifies the The first weighting matrix determined by the network side. In the embodiment of the present invention, the user equipment performs eigenvalue decomposition processing on the downlink channel matrix or reports the identifier corresponding to the first weighting matrix to the network side equipment, thereby reducing occupied uplink overhead and improving system efficiency.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method, system and equipment for antenna calibration. Background technique [0002] A MIMO (Multiple-Input Multiple-Output, Multiple-Input Multiple-Output) system refers to a system in which multiple antennas are installed at both the transmitting end and the receiving end. The MIMO system adds space domain processing on the basis of traditional time-frequency processing, and can further obtain array processing gain and diversity gain. In a MIMO system, if the transmitter can know the channel information in a certain way, the transmitted signal can be optimized according to the channel characteristics, so as to improve the receiving quality and reduce the complexity requirement of the receiver. Linear precoding / beamforming technology is one of the optimization methods, which is an effective means to combat fading channels, reduce error probability, and i...

AI Technical Summary

Problems solved by technology

[0011] The embodiments of the present invention provide a method, system, and device for antenna calibration, which are used to solve the problem in the prior art that the user equipment needs to feedback channel coefficients and directly quantize the channel coefficients in the air interface calibration method involving user equipment. The method will take up a lot of uplink overhead and reduce the system efficiency

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