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Wireless communication channel estimation method and device

A channel estimation and wireless communication technology, applied in baseband systems, digital transmission systems, electrical components, etc., can solve the problems of high complexity and high hardware cost, and achieve low complexity, high performance and channel estimation, excellent performance. Effect

Active Publication Date: 2022-03-01
CHINA ACADEMY OF INFORMATION & COMM
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Problems solved by technology

[0003] The present invention provides a wireless communication channel estimation method and device, which solves the problems of high complexity and high hardware cost of existing methods

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  • Wireless communication channel estimation method and device
  • Wireless communication channel estimation method and device

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Embodiment Construction

[0023] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] It is expected that the capacity of communication networks will increase by a thousand times in the next ten years, and ubiquitous wireless connections will become a reality. However, highly complex networks, high-cost hardware and increasing energy consumption will become key issues facing future wireless communications. Among the candidate new technologie...

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Abstract

The invention discloses a wireless communication channel estimation method and device, and the method comprises the steps: receiving a pilot signal sent by a user side, and converting the pilot signal into a two-dimensional image to obtain a channel matrix; a residual dense network channel estimation model is established, model network parameters are initialized, the channel matrix serves as an input signal, the noise estimation matrix serves as an output signal, model training is carried out, and the residual dense network channel estimation model is formed by cascading an RDN structure and a CBAM structure; calculating a loss function of the residual dense network channel estimation model through forward transmission; and calculating updated network parameters for the loss function through a chain rule according to a stochastic gradient descent algorithm, updating the residual dense network channel estimation model by using the updated network parameters until the normalized mean square error meets a convergence condition, and recording the current residual dense network channel estimation model and model network parameters. The device is simple in structure and high in applicability.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method and device for estimating a wireless communication channel. Background technique [0002] Highly complex networks, high-cost hardware, and increasing energy consumption have become key issues facing future wireless communications. Smart metasurfaces (RIS) are artificial two-dimensional materials with sub-wavelength dimensions, usually composed of metals, dielectrics, and It can be equivalently represented as an RLC circuit. RIS aims to intelligently reconstruct the wireless propagation environment between transceivers. The core feature of RIS is quasi-passivity. RIS uses the regulation of the physical properties of artificial electromagnetic materials to achieve passive control of electromagnetic waves. If the RIS-UE and RIS-BS channels need to be estimated separately, through traditional least squares (LS), MMSE, or channel estimation methods bas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/02
CPCH04L25/0224H04L25/0254Y02D30/70
Inventor 焦慧颖王志勤魏贵明徐菲杜滢沈霞闫志宇刘晓峰
Owner CHINA ACADEMY OF INFORMATION & COMM
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