A multi-beamforming method for base station UAV based on optimization theory

Abstract

The invention discloses an unmanned aerial vehicle multi-beam forming method for a base station based on an optimization theory, which can balance the requirements of an unmanned aerial vehicle base station platform for the user access number and the communication quality. The method comprises the following steps: constructing a first objective function according to the difference between a detection beam expected pattern and a transmitted signal covariance matrix, and obtaining an optimized transmitted waveform covariance matrix after optimization; and constructing a second target function according to the difference between the generalized beam forming matrix and the optimized transmitted waveform covariance matrix; adding the SINR constraint item of the terminal user as a regularizationitem in a mean square sum form to the second target function according to a set weight to obtain a third target function; initializing the beam forming vector of each terminal user, solving the beamforming vector in the next iteration process according to the iteration step length in the conjugate gradient method until the beam forming vector converges to the preset convergence precision or theiteration times exceed the preset upper limit value, and obtaining the final optimized beam forming vector.

Description

Technical field [0001] The present invention relates to the field of signal processing, and more particularly to a method of multi-beam-forming method for a base station based on optimization theory. Background technique [0002] In recent decades, with the rapid development of information technology, people's daily lives have undergone revolutionary changes. Among them, wireless communication technology has played a vital role in the development of modern society, and is the pioneer leading technology change. Today, by deploying the surrounding ground base station, the terminal information is connected to the cellular network, thereby connecting the bandgecks around the world, and therefore greatly draws the distance between people and people. [0003] Today, as people's growth in high-speed, full coverage, new technologies such as communication, and new technologies such as Internet of Things, virtual reality, the upcoming fifth-generation wireless network is expected to fundam...

AI Technical Summary

Problems solved by technology

However, the current academic and engineering circles have not considered this issue too much, and the research on the method of UAV multi-functional multi-beamforming is basically blank.

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