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Large-scale MIMO channel estimation method and system

A channel estimation, large-scale technology, applied in the field of communication, can solve the problem of numerous estimation parameters, EVD-ILSP method cannot further improve the channel estimation accuracy, etc., to achieve the effect of increasing pilot resource consumption and improving channel estimation accuracy.

Active Publication Date: 2017-02-22
GUILIN UNIV OF ELECTRONIC TECH
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is that there are many estimated parameters in a massive MIMO system, and the single EVD-ILSP method cannot further improve the channel estimation accuracy, and a large-scale MIMO channel estimation method and system are provided

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  • Large-scale MIMO channel estimation method and system

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[0038] The following will be combined with figure 1 to attach Figure 7 The implementation of the method and system of the present invention will be further elaborated with specific embodiments. It should be noted that the parameters in the examples do not affect the generality of the present invention.

[0039] A massive MIMO channel estimation method, the estimation process is as follows figure 1 As shown, the specific implementation process is as follows:

[0040] S1. Obtain the channel estimation value CHL estimated by the EVD method evd ; including steps S11-S14

[0041] S11. The user sends a pilot symbol to the base station and data symbols frame signal. The frame structure of the frame signal is as follows figure 2 shown, where the data symbol precedes the pilot symbol in time sent, n represents the number of pilots for each user. As a pilot matrix, it is stored in both the user and the base station.

[0042] S12. The base station first receives the da...

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Abstract

The invention provides a large-scale MIMO channel estimation method and system. The large-scale MIMO channel estimation system consists of a base station and at least one user; and a linear signal processing technology is utilized, properties of a channel and related noise statistic characteristics are not changed, and complex correlation analysis of data, noise and the channel is converted into a common calculation problem, so that when consumption of pilot frequency resources is not increased, channel estimation accuracy is obviously promoted.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a massive MIMO channel estimation method and system. Background technique [0002] With the rapid growth of demand for large-capacity and high-speed wireless communication, future wireless communication systems must have the characteristics of large capacity, high speed, and high reliability. In order to achieve this goal, researchers have conducted a lot of research to improve the freedom of channel transmission from different angles, and use physical layer resources such as time, frequency, space, and coding to tap growth points for improving channel transmission capacity. The massive MIMO system has become an important research hotspot nowadays because it can provide more degrees of freedom in channel transmission and can provide greater channel transmission capacity. [0003] However, since the number of equivalent sub-channels provided by the massive MIMO system is f...

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Application Information

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IPC IPC(8): H04L25/02
CPCH04L25/0204H04L25/0224H04L25/0242H04L25/0246Y02D30/70
Inventor 肖海林莫秋椿黄国庆王茹张玉冰马得森沈正源金晓晴
Owner GUILIN UNIV OF ELECTRONIC TECH
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