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Sparse cascade channel estimation method for millimeter wave IRS cooperative system

A channel estimation and cooperative system technology, applied in transmission systems, digital transmission systems, baseband system components, etc., can solve the problem of huge pilot overhead, and achieve the effect of improving estimation accuracy and reducing pilot overhead.

Pending Publication Date: 2022-04-05
CHONGQING AEROSPACE ROCKET ELECTRONIC TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, the pilot overhead required by this channel estimation scheme is related to the number of antenna elements of the IRS equipment, and the pilot overhead is huge

Method used

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  • Sparse cascade channel estimation method for millimeter wave IRS cooperative system
  • Sparse cascade channel estimation method for millimeter wave IRS cooperative system
  • Sparse cascade channel estimation method for millimeter wave IRS cooperative system

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Embodiment Construction

[0041]Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.

[0042] see Figure 1 ~ Figure 4 , for the convenience of understanding, a brief introduction to the millimeter-wave IRS cooperative system considered in the p...

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Abstract

The invention relates to a sparse cascade channel estimation method for a millimeter wave IRS cooperative system, and belongs to the technical field of communication. According to the method, the structure sparse characteristic of an angle domain sparse cascade channel is fused into a classical OMP algorithm, firstly, pilot frequency data of all users at all moments are utilized to jointly estimate a completely shared row support set, and then a column support set of each user at each moment is obtained on the basis of shared row support set estimation; and finally, estimating a corresponding sparse cascade channel matrix by adopting an LS algorithm. According to the invention, the pilot frequency overhead is reduced, and the estimation precision is improved.

Description

technical field [0001] The invention belongs to the technical field of communication, and relates to a sparse cascade channel estimation method used in a millimeter wave IRS cooperative system. Background technique [0002] In the future wireless communication network, the millimeter wave frequency band can effectively make up for and solve the problem of scarcity of spectrum resources in the microwave frequency band, making the communication transmission rate reach the Gbps level. However, millimeter-wave signals have propagation characteristics such as large path loss, severe atmospheric attenuation and rain attenuation, poor diffraction ability, poor penetration ability, and limited performance of millimeter-wave devices, making it difficult to achieve outdoor wide-area coverage. In addition, millimeter wave signals have poor diffraction ability and are more easily affected by obstacles. Due to its susceptibility to interruption and line-of-sight (LoS) occlusion, establi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/02H04L5/00
Inventor 魏德肖张睿肖满湘陈陶李逸陈秋锦李嘉辉王恺斐刘志鹏张良
Owner CHONGQING AEROSPACE ROCKET ELECTRONIC TECH CO LTD