A method and base station for determining calibration weight coefficients
A technology of weight coefficient and base station, applied in the field of communication, can solve the problems of high complexity of coupling disk implementation, deep saturation of receiving channel and unable to work normally, etc.
Active Publication Date: 2020-06-26
XFUSION DIGITAL TECH CO LTD
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Problems solved by technology
[0005] The present invention provides a method for determining calibration weight coefficients and a base station, which can solve the problem of the complexity of implementing the coupling plate in the wired coupling mode and the wireless air interface coupling mode when calibrating a large-scale small-pitch antenna array in the same base station in the prior art. The receive channel would be deeply saturated and not function properly
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[0069] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0070] Various technologies described in the embodiments of the present invention can be applied to various wireless communication systems, for example, Long Term Evolution (Long Term Evolution, LTE) system, Wideband Code Division Multiple Access (WCDMA) system, time division synchronization Code Division Multiple Access (Time Division-Synchronous Code Division Multiple Access, TD-SCDMA) system, Worldwide Interoperability for Microwave Access (WiMax) system, Global ...
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The present invention relates to the field of communications. Embodiments of the present invention provide a method for determining a calibration weight coefficient and a base station, which can solve the problem in the prior art that when a large-scale and small-pitch antenna array in a base station is calibrated, the implementation of a coupling disk is complex in a wired coupling manner and a receiving channel in a wireless air-interface coupling manner may fail to work normally due to deep saturation. The specific solution comprises: a base station acquires a first response characteristic of any channel in an antenna array in a normal communication mode, a second response characteristic of the channel in a calibration mode, and a ratio of the first response characteristic to the second response characteristic; acquires, in the calibration mode, a third response characteristic corresponding to the channel when the channel sends a calibration signal to a reference channel, and a fourth response characteristic corresponding to the channel when the reference channel sends a calibration signal to the channel; and acquires a calibration weight coefficient according to the ratio of the channel, the third response characteristic and the fourth response characteristic. The embodiments of the present invention are applied in calibration of an antenna array.
Description
technical field [0001] The invention relates to the communication field, in particular to a method for determining calibration weight coefficients and a base station. Background technique [0002] In modern wireless communication systems, Multi-Input&Multi-Output (MIMO) antenna array technology generally adopts 4-antenna or 8-antenna configuration (that is, small-scale and large-spacing antenna array). In order to further effectively expand the communication capacity, and more To achieve better spatial coverage, the future antenna array technology will be adjusted from a large-scale large-spacing (antenna spacing greater than 3 wavelengths) array to a large-scale small-spacing (antenna spacing 0.5 wavelength) array. Since in the antenna array wireless communication system, the reciprocity of receiving and transmitting spatial channels can be used, the characteristics of the uplink channel can be obtained through testing, and the characteristics of the downlink channel need t...
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IPC IPC(8): H04B7/06
CPCH04B7/06
Inventor 杨陈庆
Owner XFUSION DIGITAL TECH CO LTD