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Wireless channel acquisition method assisted by environment knowledge base

A wireless channel and acquisition method technology, applied in the field of wireless channel acquisition, can solve the problems of high channel acquisition overhead and low quality, and achieve the effects of increasing information sources, reducing training and feedback overhead, and improving channel acquisition quality.

Pending Publication Date: 2021-06-08
SOUTHEAST UNIV
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Problems solved by technology

[0004] Technical problem: The present invention proposes a wireless channel acquisition method assisted by an environmental knowledge base. By extracting knowledge from a large amount of data, environmental information, expert knowledge and other elements, a multi-modal environmental knowledge base is constructed to assist in the acquisition of channel state information. Acquisition, solving the problem of high channel acquisition overhead and low quality

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  • Wireless channel acquisition method assisted by environment knowledge base
  • Wireless channel acquisition method assisted by environment knowledge base
  • Wireless channel acquisition method assisted by environment knowledge base

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Embodiment Construction

[0022] A wireless channel acquisition method assisted by an environmental knowledge base according to the present invention comprises the following steps:

[0023] (1) From a large amount of data, expert knowledge, environmental information and other elements, extract environmental knowledge through various means, so as to build an environmental knowledge base;

[0024] (2) Using artificial intelligence and other algorithms to design the compression feedback mechanism of the pilot signal / channel feedback required for channel estimation;

[0025] (3) Design a channel estimation / reconstruction algorithm corresponding to (2);

[0026] (4) Input the received pilot signal / feedback data stream together with the environmental knowledge base into the channel estimation / reconstruction module designed in (3), and output the required high-precision channel matrix.

[0027] The knowledge base in the step (1) contains multi-modal environmental knowledge and is not limited to artificially ...

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Abstract

The invention discloses a wireless channel acquisition method assisted by an environment knowledge base. The method comprises the following steps: extracting knowledge from elements such as mass data, expert knowledge and environment information, and constructing a corresponding environment knowledge base; designing a pilot signal / channel feedback mechanism in communication through algorithms such as artificial intelligence; and outputting a high-precision wireless channel through a channel estimation / reconstruction module by jointly utilizing a pilot signal / feedback data stream and environment knowledge base information. According to the method, knowledge contained in data, environment information, expert knowledge and other elements is fully utilized, and the environment knowledge base is constructed to assist acquisition of the wireless channel, so that the overhead of channel acquisition is reduced, and the accuracy of channel acquisition is improved.

Description

technical field [0001] The invention relates to a wireless channel acquisition method assisted by an environmental knowledge base, belonging to the technical field of communication. Background technique [0002] Massive Multiple-Input Multiple-Output (Massive MIMO) is one of the core technologies of 5G due to its many advantages such as improving system capacity, spectral efficiency, user experience rate, enhancing full-dimensional coverage and saving energy consumption. It will also play a vital role in 6G. However, the development and application of massive MIMO also faces many problems, and its gain depends on the quality of channel state information (Channel State Information, CSI) obtained by the transmitter. To obtain accurate CSI, channel estimation is indispensable, which occupies a large training overhead. At the same time, for a Frequency-Division Duplexing (FDD) system that does not have uplink and downlink reciprocity, the downlink CSI needs to be fed back thro...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/02
CPCH04L25/0224H04L25/0242H04L25/0254
Inventor 郭佳佳金石陈彤温朝凯
Owner SOUTHEAST UNIV
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