Beam searching method used in multibeam switching antenna system

Abstract

An embodiment of the invention discloses a beam searching method, relating to the wireless communication technology field, and solving problems of high time complexity, high energy consumption and the like in a beam searching process by using a multibeam switching antenna communication system. In the embodiment, according to beam numbers of a transmitting terminal and a receiving terminal and a two-dimensional curved surface corresponding to reception power, by utilizing a nonrestraint direct searching Powell optimization algorithm, optimal reception power value searching is carried out; by fully utilizing a characteristic that a beam width becomes narrow with increase of an antenna element number, a used antenna element number is gradually increased, beam width is thinned, and an optimal transmitting-receiving wave beam pair is searched and obtained; in a searching process of increasing the antenna element number in each round, a reasonably simplified Powell optimization search algorithm is used to raise searching efficiency. The embodiment mainly is used in wireless communication equipment which employs beam forming (beam formation) technology.

Description

technical field [0001] The invention relates to the technical field of wireless communication, a beam search method and device in a wireless communication system using a multi-beam switched antenna, especially a 60GHz communication system, and specifically provides a beam search method and device used in a multi-beam switched antenna system. Background technique [0002] As an important branch of millimeter wave communication, 60GHz communication mainly has the following advantages: large communication volume, license-free bandwidth exceeding 5GHz, and if multiplexing technologies such as space division and orthogonal polarization are added, the channel capacity it supports at the same time It is much larger, so it is especially suitable for comprehensive services such as the transmission of high-speed broadband video information; it has good directionality and strong security and confidentiality. The attenuation of millimeter waves by walls is also great, making it more dif...

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to overcome the problems of beam search in the prior art, especially to solve the problem of how to efficiently and quickly solve the problem of beam search with small search space in a multi-beam switching antenna communication system, thereby providing a multi- Beam search method and system in beam switching antenna system

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