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Radar communication integrated system, channel estimation method, device and storage medium

A radar signal and equipment technology, applied in the field of communication, can solve problems such as high overhead, time resource occupation, and excessive time resource occupation

Active Publication Date: 2020-09-04
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0004] In the existing channel estimation method, special time-frequency resources need to be occupied to estimate the channel response, and after the channel estimation is completed, a special feedback channel needs to be occupied for the feedback of the channel response, so that, in the massive MIMO antenna In the background, the estimation of channel response and the feedback of channel information need to occupy exponentially increasing time resources, and the overhead is huge, that is, the channel estimation process takes up too much time resources

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  • Radar communication integrated system, channel estimation method, device and storage medium
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  • Radar communication integrated system, channel estimation method, device and storage medium

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[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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.

[0046] A link in a communication process of unidirectional propagation may also be called a unidirectional link, and channel estimation for the unidirectional link has the following manners: one manner is CSI estimation based on Compressed Sensing (CS). Using the sparse multipath structure of the massive MIMO channel, using a smaller scale of CS training symbols, the symbols received by the receiver are processed to estimate the CSI. However, this approach rel...

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Abstract

The embodiment of the invention provides a radar communication integrated system, a channel estimation method, a device and a storage medium, the radar communication integrated system comprises a first device and a second device, wherein the first device and the second device are each provided with a transmitting antenna and a receiving antenna, the transmitting antenna and the receiving antenna are mounted on the radar communication integrated device; the first device and the second device have a sight distance path; the communication working mode of the first device and the second device istime division duplex TDD; the transmitting wave beam is scattered at a communication receiver to generate an echo signal, and the echo signal is received by a receiving antenna of the communication transmitter to perform radar signal processing so as to obtain radar channel parameters through a radar channel detection algorithm according to the radar signal; and the radar channel parameters and the radar signals are input into a pre-trained recurrent neural network (RNN) to obtain a communication channel frequency domain response. In this way, occupation of time-frequency resources by channelestimation can be reduced.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a radar communication integrated system, a channel estimation method, equipment and a storage medium. Background technique [0002] Multiple-Input Multiple-Output (MIMO) channel estimation is an urgent problem to be solved in MIMO communication systems. With the increase in the size of the antenna array, the increase in the number of subcarriers, the enhancement of user mobility, etc., in Time Division Duplexing (TDD), MIMO channel estimation and channel state information (Channel State Information, CSI) Feedback transmission takes up more and more time and signaling frame resources, and how to efficiently perform channel estimation has become a difficult point. [0003] Existing TDD MIMO channel estimation schemes are based on the channel reciprocity in TDD systems. After channel estimation is performed on the uplink, the uplink CSI can be directly fed back to th...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/02H04B7/0413
CPCH04B7/0413H04L25/0204H04L25/022H04L25/0224
Inventor 冯志勇陈旭尉志青马昊方子希杨恒
Owner BEIJING UNIV OF POSTS & TELECOMM
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