Positioning information assistance-based massive multi-input multi-output beamforming method

A beamforming method and positioning information technology, applied in the field of communication, can solve the problem of high computational complexity, and achieve the effect of simple communication protocol process, reduced interference, and easy implementation

Inactive Publication Date: 2015-11-25
XIDIAN UNIV
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Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art above, and propose a MassiveMIMO beamforming metho

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  • Positioning information assistance-based massive multi-input multi-output beamforming method

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[0040] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0041] Reference attached figure 1 The communication system of the present invention includes three parts: a positioning system, a user terminal and a base station terminal. The positioning system can adopt GPS, Beidou navigation and positioning system, wireless positioning system, etc. Different positioning systems can be selected according to the requirements of the communication system in terms of real-time and accuracy or the objective conditions of the user terminal. Assuming that all the terminals of the system adopt the Beidou satellite navigation and positioning system, the base station terminal and the user terminal integrate the Beidou navigation and positioning device at the same time, and in the outdoor open environment emphasized by the present invention, all terminals can directly communicate with the navigation satellite through the direct path. ...

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Abstract

The invention provides a positioning information assistance-based massive multi-input multi-output beamforming method. The objective of the invention is to solve the problem of high computational complexity in an existing massive multi-input multi-output beamforming method. The method includes the following steps that: (1) a user terminal obtains positioning information of the user terminal itself and sends the positioning information to a base station; (2) the base station obtains its own positioning information; (3) the base station calculates a direction of arrival according to the positioning information of the base station itself and the positioning information of the user terminal; and (4) the base station calculates beamforming vectors according to the direction of arrival. According to the positioning information assistance-based massive multi-input multi-output beamforming method of the invention, a massive MIMO (multi-input multi-output) beamforming method and positioning technologies are combined together, and therefore, the positioning information assistance-based massive multi-input multi-output beamforming method has the advantages of simple operation, small information feedback amount, short time delay, large system capacity and simple communication protocol, and can realize beamforming transmission of a massive MIMO system under an outdoor environment.

Description

technical field [0001] The invention belongs to the technical field of communication, and relates to a beamforming method of a massive multiple-input multiple-output (MassiveMIMO) system assisted by positioning information, which can be used to realize beamforming transmission of the MassiveMIMO system in an outdoor environment. technical background [0002] The GPS of the United States and the GLONASS system of Russia have been established and widely used, and the theory and technology of navigation and positioning are becoming mature. In order to improve the autonomy, safety and integrity of navigation and positioning, my country has independently developed the Beidou satellite navigation and positioning system. At present, the Beidou second-generation satellite navigation and positioning system is in the trial operation stage. In addition, there are positioning technologies such as wireless positioning and gyro positioning, which are constantly developing. At present, po...

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Application Information

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IPC IPC(8): H04B7/06H04B7/08
CPCH04B7/0617H04B7/086
Inventor 李文刚罗文翠刘龙伟汤林静唐李梅
Owner XIDIAN UNIV
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