Base station and method for calibrating channels of base station with multiple antennas

Abstract

The present invention provides a base station and a method for calibrating channels of the base station with multiple antennas. The method comprises that the base station transmits multiple groups of data to a terminal by at least two antennas, and the multiple groups of data are the data processed by weighting a group of detection data respectively using different weighting parameters; feedback information transmitted after the terminal checking each group of data is received; a group of weighting parameters are selected from multiple groups of weighting parameters according to the feedback information, and the channel calibration parameters between the at least two antennas of the base station are acquired; and the channels between the at least two antennas of the base station are calibrated using the channel calibration parameters. The base station comprises a transmission module, a reception module, an acquisition module and a calibration module.

Description

technical field [0001] Embodiments of the present invention relate to communication technologies, and in particular to a channel correction method for a multi-antenna base station and the base station. Background technique [0002] With the continuous development of wireless communication technologies and devices, the multi-antenna technology has also been applied more and more. Multi-antenna beamforming (Beamforming, referred to as: BF) is a technology that compensates for signal fading and distortion caused by factors such as space loss and multipath effects during wireless propagation, and at the same time reduces interference between co-channel users, including There are two types of multiple-input multiple-output BF (Multi-Input Multi-Output BF, MIMO-BF for short) and Direction of Arrival BF (Direction of Arrival BF, DOA-BF for short). [0003] To realize adaptive BF, it is required that when the signal passes through different transmission channels, the amplitude and ...

AI Technical Summary

Problems solved by technology

[0005] However, regardless of the built-in dedicated calibration channel or external calibration equipment, the cost of calibrating the transmit / receive channel of the base station will be high

When the transmission channels of the base station are distributed in different locations (logically they can belong to the same base station, or they can belong to different base stations), the method of built-in correction channel cannot be realized

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