Self-adaptive filtering method for power line communication signals

A power line communication and adaptive filtering technology, applied in the field of communication, can solve the problem that the low-pass filter cannot effectively filter out the pulse noise of the power line communication signal

Active Publication Date: 2018-11-23
GUANGDONG UNIV OF PETROCHEMICAL TECH
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  • Abstract
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a power line communication signal adaptive filtering method to

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  • Self-adaptive filtering method for power line communication signals
  • Self-adaptive filtering method for power line communication signals
  • Self-adaptive filtering method for power line communication signals

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[0053] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0054] Aiming at the problem that the existing low-pass filter cannot effectively filter the pulse noise in the power line communication signal, the invention provides an adaptive filtering method for the power line communication signal.

[0055] Such as figure 1 As shown, the power line communication signal adaptive filtering method provided by the embodiment of the present invention

[0056] S101, collecting the power line communication signal sequence and converting it into a signal matrix;

[0057] S102. Construct a transformation operator matrix according to the converted signal matrix;

[0058] S103, constructing a measurement matrix;

[0059] S104, determine the filtering weight, iteratively update the signal matrix according to the obtained tran...

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Abstract

The invention provides a self-adaptive filtering method for power line communication signals, capable of effectively filtering out impulse noise in the power line communication signals. The method comprises the steps of collecting a power line communication signal sequence, converting the power line communication signal sequence into a signal matrix; constructing a transformation operator matrix according to the signal matrix obtained by conversion; constructing a measurement matrix; determining a filtering weight, updating the signal matrix in iterative mode according to the obtained transformation operator matrix, the filtering weight and the constructed measurement matrix until the current iteration frequency is equal to the length of the power line communication signal sequence; converting the currently obtained signal matrix, and generating a power line communication signal sequence in which noise is filtered out. The invention relates to the field of communication.

Description

technical field [0001] The invention relates to the field of communication, in particular to a power line communication signal adaptive filtering method. Background technique [0002] Compared with various wired communication technologies, Power Line Communications (PLC) has the advantages of no need for rewiring and easy networking, and has broad application prospects. The power line communication technology is divided into narrowband power line communication (Narrowband over power line, NPL) and broadband power line communication (Broadband over power line, BPL). Narrowband power line communication refers to the power line carrier communication technology with a bandwidth limited to 3k-500kHz. Including the regulated bandwidth of CENELEC in Europe (3~148.5kHz), the regulated bandwidth of the U.S. Federal Communications Commission (FCC) (9~490kHz), and the regulated bandwidth of the Association of Radio Industries and Businesses (ARIB) in Japan ( 9~450kHz), and China's sp...

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Application Information

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IPC IPC(8): H04B3/54
CPCH04B3/542H04B2203/5491
Inventor 翟明岳
Owner GUANGDONG UNIV OF PETROCHEMICAL TECH
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