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Channel estimation method based on compressed sensing

A channel estimation and compressed sensing technology, which is applied in the field of channel estimation based on compressed sensing, can solve the problem of high channel estimation overhead, achieve the effect of reducing overhead, avoiding a large amount of overhead, and reducing the number

Inactive Publication Date: 2018-02-16
BEIJING XINWEI TELECOM TECH
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  • Abstract
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Problems solved by technology

These common methods need to send a large number of pilot symbols, and the channel estimation overhead is large.

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  • Channel estimation method based on compressed sensing
  • Channel estimation method based on compressed sensing

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Embodiment Construction

[0013] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0014] The basic principle of the present invention is that when the optimal beam pair is used to send the pilot signal, the receiving end can use the optimal beam pair to obtain a pilot signal with a high signal-to-noise ratio, and the received pilot signal is expresse...

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Abstract

The invention provides a channel estimation method based on compressed sensing. The method comprises the following steps that: a receiving end estimates an optimal beam pair, and feeds back the optimal beam pair to a transmitting end; the transmitting end transmits a pilot sequence by using a transmitting beam in the optimal beam pair; and the receiving end receives the pilot sequence by using a receiving beam in the optimal beam pair, and performs channel estimation on the received pilot sequence by a compressed sensing algorithm to obtain channel state information. Through adoption of the channel estimation method, the number of pilot symbols can be reduced, and the overhead of channel estimation is reduced.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a channel estimation method based on compressed sensing. Background technique [0002] In a wireless communication system, in order to detect the data from the transmitter, the receiver needs to obtain channel state information first. In the actual environment, wireless signals will be affected by large-scale fading and small-scale fading, which will cause distortion of communication signals and affect communication quality. In order to compensate the signal distortion caused by the wireless channel, the current solution is to perform channel estimation at the receiving end, that is, to estimate the channel state information of the signal by using information such as the received signal and channel characteristics, so as to compensate the distortion caused by the channel to the signal. Channel estimation technology provides accurate channel state information for wireless co...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/02H04B7/0413
CPCH04B7/043H04L25/0202
Inventor 马大为孙鹏刘兵朝
Owner BEIJING XINWEI TELECOM TECH
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