Method and device for extracting fading characteristics of wireless channel

Abstract

The invention provides a method and a device for extracting fading characteristics of a wireless channel, which can improve the instantaneity and accuracy of channel estimation and reduce the computational complexity of channel estimation. The method comprises: enabling a receiving end to construct an adjacency graph for data containing wireless channel fading characteristics according to whetherreceived data transmitted through a wireless channel are adjacent in an Euclidean space or not, wherein the received data are data containing the wireless channel fading characteristics; determining aweight matrix of the data containing the wireless channel fading characteristics in a low-dimensional space based on the constructed adjacency graph; determining an optimal low-dimensional feature mapping matrix of the data containing the wireless channel fading features according to the obtained weight matrix; and projecting the data containing the wireless channel fading features into a low-dimensional space through the optimal low-dimensional feature mapping matrix to obtain low-dimensional manifold data containing the wireless channel fading features so as to perform channel estimation. The invention relates to the technical field of wireless communication.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method and device for extracting fading features of a wireless channel. Background technique [0002] As one of the three pillars of human life, communication is increasingly applied to various fields of life and production. The number of users and data volume are increasing exponentially. The new generation of mobile communication technology requires high standards in the context of big data. High transmission rate and rich spectrum resources, while ensuring communication quality. [0003] The communication quality of wireless communication largely depends on the accuracy of channel estimation. Channel estimation is the process of estimating the model parameters of an assumed channel model from the received data. However, in the new generation of mobile communications, the data at the receiving end contains wireless channel fading characteristics, and the larg...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method and device for extracting fading features of a wireless channel, so as to solve the problem in the prior art that the data dimension containing the fading features of a wireless channel is large, resulting in a significant increase in the computational complexity of channel estimation.

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