Channel estimation method for intelligent reflection surface wireless communication

A technology for channel estimation and wireless communication, which is applied in the field of channel estimation for wireless communication on smart reflective surfaces, and can solve problems that need to be improved.

Active Publication Date: 2020-10-23
BEIJING JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, since the mmWave channel sparse pattern is usually unknown, channel estimation via compressive sensing technology needs to be improved in terms of accuracy and reliability.

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  • Channel estimation method for intelligent reflection surface wireless communication
  • Channel estimation method for intelligent reflection surface wireless communication
  • Channel estimation method for intelligent reflection surface wireless communication

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Embodiment Construction

[0025] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0026] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.

[0027] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description.

[0028] In all examples shown and discussed herein, any specific values ​​should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have dif...

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Abstract

The invention discloses a channel estimation method for intelligent reflection surface wireless communication. The method comprises the following steps: an intelligent surface end receives a pilot signal sent by a user end for processing, and transmits the pilot signal to a base station through reflection of the intelligent surface end; at the intelligent surface end and the base station, channelestimation is carried out according to the received pilot signal to obtain a first channel estimation matrix, and an enhanced deep residual network is constructed to carry out training by taking the first channel estimation matrix as the input of the enhanced deep residual error network and taking the second channel estimation matrix as the output so as to obtain the accurate estimation of the channel. Under the condition that the number of receiving sensors of the intelligent reflecting surface is reduced, channel estimation at the base station and the intelligent surface end is assisted on the basis of the pilot signals received from the user, the accuracy of channel estimation is improved, and the calculation complexity is reduced.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, and more particularly, relates to a channel estimation method for wireless communication on an intelligent reflective surface. Background technique [0002] To meet the high-throughput expectations of fifth-generation (5G) wireless communication networks, employing large-scale smart surfaces (RIS) is a promising solution to improve the coverage and rate of future wireless systems. RIS surfaces contain a large number of near-passive elements that interact with incident signals and enhance the performance of wireless systems by reflecting them. In addition, for millimeter-wave communication, since the millimeter-wave frequency signal is used, its wavelength is shorter than that of microwaves, and both the base station (BS) and user equipment (UE) can be equipped with large-scale antenna arrays to obtain higher spectral efficiency. However, channel estimation on RIS is a key ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/08H04B7/0456H04L25/02
CPCH04B7/0456H04B7/0854H04L25/024
Inventor 章嘉懿金宇艾渤
Owner BEIJING JIAOTONG UNIV
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