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Channel impulse response and impulse noise joint estimation method, system and device

A channel impulse response and impulse noise technology, applied in the field of communication, can solve the problem of poor accuracy of channel estimation results, and achieve the effect of improving anti-noise performance, good performance and performance improvement

Active Publication Date: 2020-11-27
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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  • Channel impulse response and impulse noise joint estimation method, system and device
  • Channel impulse response and impulse noise joint estimation method, system and device
  • Channel impulse response and impulse noise joint estimation method, system and device

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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 invention discloses a channel impulse response and impulse noise joint estimation method, system and device. The method comprises the following steps: establishing an MIMO-PLC channel model and anoise model to respectively solve channel frequency response and noise of each receiving end of an MIMO-PLC channel, and calculating MIMO-PLC channel receiving signals on the basis of the channel frequency response and the noise; and utilizing the correlation of channels and the sparse characteristics of channel impact response and impulse noise. The method is based on a fast block sparse Bayesianlearning (BSBL-FM) method, the structure and spatial distribution information of a physical signal can be effectively mined by utilizing block sparsity, so that the performance of the sparse reconstruction algorithm is remarkably improved, the sparse Bayesian learning method can fully mine and utilize prior information of the data, the probability distribution condition of prior information is assumed, mathematical modeling is carried out on a problem to be solved, joint estimation is carried out on the channel impact response and the impulse noise, and the anti-noise performance of the MIMO-PLC system and the estimation accuracy of the channel impact response and the impulse noise are effectively improved.

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] Powerline 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 ho...

Claims

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Application Information

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Patent Type & Authority Applications(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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