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Adaptive filtering method for power line communication signals

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

Active Publication Date: 2019-01-22
GUANGDONG UNIV OF PETROCHEMICAL TECH
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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 solve the problem that the low-pass filter in the prior art cannot effectively filter out the pulse noise in the power line communication signal

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  • Adaptive filtering method for power line communication signals
  • Adaptive filtering method for power line communication signals
  • Adaptive filtering method for power line communication signals

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Embodiment Construction

[0043] 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.

[0044] 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.

[0045] Such as figure 1 As shown, the power line communication signal adaptive filtering method provided by the embodiment of the present invention

[0046] S101, collecting the power line communication signal sequence and converting it into a signal matrix;

[0047] S102. Perform a row-by-row Fourier transform on the signal matrix;

[0048] S103. Based on the obtained row Fourier transform result, iteratively calculate the filter factor of the power line communication signal, and correct the obtained row Fourier tra...

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Abstract

The invention provides an adaptive filtering method of a power line communication signal, which can effectively filter impulse noise in the power line communication signal. The method comprises the following steps of: collecting a power line communication signal sequence and converting the signal sequence into a signal matrix; performing a row Fourier transform on the signal matrix according to arow; based on the result of the line Fourier transform, the filter factor of the power line communication signal is calculated iteratively, and the result of the line Fourier transform is modified; judging whether the current iteration number is equal to the length of the power line communication signal sequence; if so, the line-by-line inverse Fourier transform is performed on the currently obtained correction result to generate a noise-filtered power line communication signal sequence. The present invention relates to the field of electric power.

Description

technical field [0001] The invention relates to the field of electric power, 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 s...

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Application Information

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IPC IPC(8): H04B3/54H04B3/02
CPCH04B3/02H04B3/54H04B3/542H04B2203/5491
Inventor 翟明岳
Owner GUANGDONG UNIV OF PETROCHEMICAL TECH