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Millimeter wave communication multipath channel dynamic beam training method

A beam training, millimeter wave technology, applied in diversity/multi-antenna systems, space transmit diversity, radio transmission systems, etc., can solve problems such as affecting channel information acquisition and difficult to obtain accurate parameters of multipath

Active Publication Date: 2019-02-22
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, it is difficult to obtain the precise parameters of multipath through the codebook
This makes the influence of a large number of estimated paths remaining when estimating the current path, which greatly affects the acquisition of channel information

Method used

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  • Millimeter wave communication multipath channel dynamic beam training method
  • Millimeter wave communication multipath channel dynamic beam training method
  • Millimeter wave communication multipath channel dynamic beam training method

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Embodiment Construction

[0070] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0071] (1) if figure 1 As shown, the millimeter wave communication system model used in the present invention is described as follows:

[0072] The signal is sent out through the antenna array after digital precoding, radio frequency link, and analog precoding at the sending end. After the signal is transmitted in the wireless channel, it reaches the receiving end, and the signal received by the antenna array at the receiving end undergoes analog combination, radio frequency link and digital combination to obtain the final received signal. The antenna arrays at the sending end and the receiving end are both uniform linear arrays with half-wavelength intervals, respectively N t and N r root antenna. Then the received signal can be expressed as:

[0073]

[0074] Among them, f BB , F RF , H, W RF and w BB R...

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Abstract

The invention discloses a millimeter wave communication multipath channel dynamic beam training method. According to the millimeter wave communication multipath channel dynamic beam training method provided by the invention, a beam training method of a millimeter wave communication multipath channel is fully studied, a layered codebook of a sending end and a receiving end which can be adjusted dynamically and have a closed expression is designed, and through a method for removing path interferences estimated previously, the problem of multipath channel estimation is converted into sequential multiple single-path channel estimation problems. The influence of estimated paths is removed through the design of a codeword, so that the beam training complexity of the multipath channel is greatlyreduced, and the accuracy is greatly improved.

Description

technical field [0001] The invention belongs to the field of millimeter wave wireless communication, and relates to a method for dynamic beam training of a millimeter wave communication multipath channel. Background technique [0002] With the popularity of mobile terminal devices, people's demand for wireless communication is also increasing. In order to meet people's increasing demand for data traffic, millimeter wave communication (30GHz-300GHz) has attracted widespread attention because of its rich spectrum resources and extremely high transmission rate. [0003] Due to the higher carrier frequency than the existing microwave frequency band communication, mmWave communication has greater path loss when propagating in space. On the other hand, higher carrier frequency enables mmWave communication with smaller antenna size. This enables a larger-scale antenna array to be packaged in a limited area, and the gain of the antenna array is used to compensate for the channel p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/0456H04B7/06H04B7/08
CPCH04B7/0456H04B7/0617H04B7/088
Inventor 戚晨皓陈康建
Owner SOUTHEAST UNIV
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