PLC channel impulse noise detection method and system using square exponential kernel

An impulse noise and channel impulse technology, applied in the field of communication, can solve the problems of low transmit power, high noise intensity, low signal-to-noise ratio, etc., and achieve the effect of good robustness, simple calculation and improved performance.

Inactive Publication Date: 2020-01-21
GUANGDONG UNIV OF PETROCHEMICAL TECH
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Problems solved by technology

[0003] Although the power line communication system has a wide range of applications and the technology is relatively mature, a large number of branches and electrical equipment in the power line communication system will generate a lot of noise in the power line channel; among them, random impulse noise has great randomness, and the noise intensity High, causing serious damage to the power line communication system, therefore, the suppression technology for random impulse noise has been the focus of research by domestic and foreign scholars; and the noise model does not conform to the Gaussian distribution
Therefore, the traditional communication system designed for Gaussian noise is no longer applicable to the power line carrier communication system, and the corresponding noise suppression technology must be studied ...

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  • PLC channel impulse noise detection method and system using square exponential kernel
  • PLC channel impulse noise detection method and system using square exponential kernel
  • PLC channel impulse noise detection method and system using square exponential kernel

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Embodiment Construction

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] figure 1 A schematic flow diagram of a PLC channel impulse noise detection method using square exponent kernel

[0023] figure 1 It is a schematic flow diagram of a method f...

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Abstract

The embodiment of the invention discloses a PLC (Programmable Logic Controller) channel impulse noise detection method and system by utilizing a square exponential kernel. The method comprises the following steps: step 1, inputting an actually measured signal sequence S; and step 2, detecting the PLC channel impulse noise according to the square exponential kernel property. The method specificallycomprises the following steps: if a square exponent kernel HK of a Kth window meets a judgment condition that | HK | is greater than or equal to e0, detecting impulse noise at a Kth point of a signalsequence S; otherwise, determining that the impulse noise is not detected, wherein e0 is an impulse noise judgment threshold value.

Description

Technical field [0001] The present invention relates to the field of communication, in particular to a method and system for detecting impulse noise of a PLC channel. Background technique [0002] Compared with various wired communication technologies, power line communication has the advantages of no need for rewiring and easy networking, and has broad application prospects. Power line communication technology is divided into 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 3k500kHz; power line communication technology includes European CENELEC The specified bandwidth (3148.5kHz), the Federal Communications Commission (FCC) specified bandwidth (9490kHz), the Japanese Association of Radio Industries and Businesses (Association of Radio Industries and Businesses, ARIB) specified bandwidth (9450kHz), and C...

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Application Information

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IPC IPC(8): H04B3/46H04B3/54
CPCH04B3/46H04B3/54
Inventor 翟明岳
Owner GUANGDONG UNIV OF PETROCHEMICAL TECH
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