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Method, system and equipment for joint estimation of channel impulse response and impulse noise

A technology of channel impulse response and impulse noise, which is applied in the field of communication, can solve problems such as poor accuracy of channel estimation results, and achieve the effects of improving anti-noise performance, good performance, and improving transmission efficiency and reliability

Active Publication Date: 2022-04-29
MEASUREMENT CENT OF GUANGDONG POWER GRID CO LTD
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Problems solved by technology

[0007] The present invention provides a channel impulse response and impulse noise joint estimation method, system and equipment, which are used to solve the problem of separate consideration of channel estimation and impulse noise when estimating the channel in the prior art, and there is an accuracy comparison of channel estimation results poor technical problem

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  • Method, system and equipment for joint estimation of channel impulse response and impulse noise
  • Method, system and equipment for joint estimation of channel impulse response and impulse noise

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Embodiment 2

[0067] Such as figure 1As shown, the embodiment of the present invention provides a method, system and device for joint estimation of channel impulse response and impulse noise. The method includes the following steps:

[0068] S1: In household cables, there are three kinds of transmission lines: phase line (P), neutral line (N), and protective earth line (PE). The single-input single-output (SISO-PLC) system only uses P-N to transmit information, while the MIMO-PLC system can use multiple pairs of transmission lines (ie P-N, P-PE, PE-N) for data transmission, which can effectively improve the system capacity; therefore , establish a MIMO-PLC channel model according to multiple pairs of transmission lines, and calculate the channel frequency response of each receiving end of the MIMO-PLC channel on the basis of the established MIMO-PLC channel model;

[0069] It should be further explained that what this embodiment constructs is a 2×2 MIMO-PLC channel model, and its specific ...

Embodiment 3

[0177] Such as Figure 4 As shown, a joint channel impulse response and impulse noise estimation system includes a channel frequency response calculation module 21, a noise calculation module 22, a channel received signal calculation module 23, a channel received signal conversion module 24, a matrix construction module 25 and a joint estimation module 26;

[0178] The channel frequency response calculation module 21 is used to set up a MIMO-PLC channel model, and calculates the channel frequency response of each receiving end of the MIMO-PLC channel according to the MIMO-PLC channel model;

[0179] The noise calculation module 22 is used to set up a noise model based on background noise and impulse noise, and calculate the noise of each receiving end of the MIMO-PLC channel according to the noise model set up;

[0180] The channel receiving signal calculation module 23 is used to calculate the MIMO-PLC channel receiving signal according to the channel frequency response of e...

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Abstract

The present invention discloses a channel impulse response and impulse noise joint estimation method, system and equipment. The present invention respectively solves the channel frequency response and noise of each receiving end of the MIMO-PLC channel by establishing a MIMO-PLC channel model and a noise model, and On this basis, the received signal of the MIMO-PLC channel is calculated; by using the correlation of the channel and the sparse characteristics of the channel impulse response and impulse noise, based on the fast block sparse Bayesian learning (BSBL-FM) method, the use of block sparseness can effectively mine The structure and spatial distribution information of the physical signal can significantly improve the performance of the sparse reconstruction algorithm. The sparse Bayesian learning method can fully mine and utilize the prior information of the data. Assuming the probability distribution of the prior information, the problem to be solved The problem is mathematically modeled, and the channel impulse response and impulse noise are jointly estimated, which effectively improves the anti-noise performance of the MIMO-PLC system and the accuracy of estimating the channel impulse response and impulse noise.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method, system and equipment for jointly estimating channel impulse response and impulse noise. Background technique [0002] Power line communication (PLC) is a technology that uses power lines to transmit data signals. Because the power line system has the advantages of wide distribution of lines and low installation cost, PLC is widely regarded as an important communication method in the fields of smart grid, home automation, and office automation. Generally, according to the voltage level transmitted by the power line, PLC can be divided into three categories: low voltage power line communication (usually refers to 220V / 380V voltage level); medium voltage power line communication (usually refers to 10kV voltage level); high voltage power line communication (usually refers to 35kV and above voltage level). With the growth of communication demand for smart grid and smart h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/02H04B3/46H04B3/54H04B7/0413
CPCH04L25/0224H04B7/0413H04B3/544H04B3/46H04L25/0292
Inventor 赵闻张捷黄友朋
Owner MEASUREMENT CENT OF GUANGDONG POWER GRID CO LTD
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