High-resolution analog beam rapid training method and device

Abstract

The invention discloses a high-resolution analog beam rapid training method and a high-resolution analog beam rapid training device. The high-resolution analog beam rapid training method comprises the steps of setting relevant parameters of beam training, initializing first iteration, then carrying out many times of iteration while selecting part of code words from a codebook for training in each iteration, comparing a result with a previous iteration result, determining analog beam vectors of each antenna subarray according to an evaluation index, carrying out iteration calculation layer by layer, and completing beam training of one antenna subarray when an iteration terminal condition is satisfied. Compared with the existing beam training method, the high-resolution analog beam rapid training method is low in complexity, only selects part of the code words in the codebook for training through reasonable region search of the codebook, greatly reduces beam training times, and saves training cost. The high-resolution analog beam rapid training method adopts the codebook with large capacity, quantifies all beam directional angles in a circumference at high resolution, has a certain fault-tolerant capability, and ensures effective alignment between transmitted beams and received beams, thereby improving overall performance of the system.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and relates to a high-resolution analog beam fast training method of a millimeter wave (Millimeterwave) multiple input multiple output (Multiple Input Multiple Output, MIMO) communication system. This method has less beam training times and low complexity, and can obtain better system performance at the same time. Background technique [0002] At present, most wireless applications are still congested in the microwave frequency band, and scarce spectrum resources can no longer meet the growing requirements of wireless users and wireless applications. The millimeter wave (Millimeterwave) frequency band has been selected as the key spectrum of the next generation wireless local area network and mobile communication system because of its large amount of unlicensed bandwidth, and has become a research hotspot in related industries. The combination of millimeter wave and MIMO systems c...

AI Technical Summary

Problems solved by technology

[0004] In most of the existing beam training methods, the number of training times usually grows linearly with the capacity of the codebook, and using binary search or concatenated codebooks can make the number of training times grow logarithmically with the capacity of the codebook, but due to the Strict partitioning, the risk is relatively large

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