A method and apparatus for three-dimensional channel reconstruction based on a multi-probe anechoic chamber

Abstract

The embodiment of the invention provides a three-dimensional channel reconstruction method and a device based on a multi-probe anechoic chamber. The method comprises the following steps: determining an angle power spectrum and a first spatial correlation corresponding to the signal angle information of each sampling time point; according to the preset convex optimization algorithm, solving the weighting constraint equations to obtain the corresponding weighting values of each probe in the three-dimensional channel model to be reconstructed at each sampling time point; determining a second spatial correlation according to a preset second spatial correlation calculation formula; determining a correlation coefficient between the first spatial correlation and the second spatial correlation according to a preset correlation coefficient calculation formula; if the correlation coefficient satisfies the preset condition, determining the three-dimensional channel model to be reconstructed basedon the weight value of each probe in the three-dimensional channel model to be reconstructed. As can be seen, in the embodiment of the invention, a set of implementation flow suitable for the equipment scheme of the three-dimensional spherical channel model is summarized, so as to improve the simulation effect of the three-dimensional spherical channel model.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method and device for three-dimensional channel reconstruction based on a multi-probe darkroom. Background technique [0002] In recent years, in application scenarios such as user mobile communication, living room, and outdoor entertainment center, business forms are constantly changing and developing, but the final access methods of users are all inclined to use wireless technology without exception. Traditional wireless terminals generally use Over-The-Air (OTA) performance testing for wireless transmission and networking performance evaluation, and establish a free space without reflection through an anechoic chamber to evaluate the overall performance of the radio frequency and antenna of the wireless terminal. In the fourth-generation and fifth-generation mobile communication systems, a multiple-input multiple-output (MIMO Multiple-Input Multiple-Output, MI...

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Problems solved by technology

[0003] However, today's Multiple-Input Multiple-Output Over-the-Air (MIMO OTA) test channel reconstruction scheme still mainly simplifies the three-dimensional actual channel model to two-dimensional, and only considers the two-dimensional plane Time delay, Doppler, and horizontal plane azimuth components, while ignoring the spatial domain information in the vertical dimension, the statistical characteristics of angle information only have azimuth components, but no elevation angle components, which cannot truly reflect the actual channel, and are no longer applicable Testing and evaluation of current MIMO terminal performance

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