Pulse noise detection method of power line communication channel

A power line communication and channel pulse technology, applied in distribution line transmission systems, line transmission monitoring/testing, electrical components, etc., can solve the problems of distinguishing background noise and impulse noise, affecting the detection results, etc., to improve the recognition accuracy Effect

Active Publication Date: 2012-02-08
兆讯恒达科技股份有限公司
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Problems solved by technology

The disadvantage of this method is that when the background noise in the channel is relatively large, it is difficult to distinguish the background noise from the impulse noise, and the setting of the noise threshold will greatly affect the detection results

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  • Pulse noise detection method of power line communication channel
  • Pulse noise detection method of power line communication channel
  • Pulse noise detection method of power line communication channel

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the method for detecting impulse noise of a power line communication (PLC) channel of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0032] The specific implementation method of the power line communication (PLC) channel impulse noise detection method of the present invention will be further described in detail below in conjunction with each accompanying drawing.

[0033] Such as figure 1 As shown, the power line communication (PLC) channel impulse noise detection method of the embodiment of the present invention includes the following steps:

[0034] Step S1, sampling the noise of the power line communication channel to obtain N sampling poin...

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Abstract

The invention discloses a pulse noise detection method of a power line communication channel, comprising the following steps of: S1, sampling noise of the power line communication channel; S2, segmenting continuous sampling points; S3, computing the average value of absolute values of all segments; S4, computing the average ratio of absolute variances of all the segments; S5, computing the average value of average ratios of the absolute variances; S6, comparing the average ratio of the absolute variances with the average value; if the average value of the absolute variances of a segment is larger than the average value, turning to step S7; otherwise, turning to step S8; S7, judging whether noise data amplitude in the segment exceeds a preset noise threshold; if so, judging that the segment appears the pulse noise once; otherwise, judging that the segment has no pulse noise; judging whether the comparison is over; if so, returning results; otherwise, turning to the step S6 and continuing to compare. Recognition accuracy of pulse noise is improved by using the method.

Description

technical field [0001] The invention relates to the technical field of communication noise detection, in particular to a method for detecting impulse noise of a power line communication (PLC) channel. Background technique [0002] Power Line Communication (PLC) is a communication method using power lines as a communication medium. PLC technology was applied to transmission lines more than 60 years ago for dispatching and commanding communications in power plants and substations. However, it has not been an ideal communication medium for a long time. However, with the continuous advancement of technology , especially the development of modulation technology and microelectronics technology, makes the practical application of PLC possible. [0003] With the advancement of technology, PLC technology is used to transmit high-speed data, voice, image and other multimedia service signals with low-voltage power distribution lines, and is applied to home Internet (Internet) "broadba...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/00H04B3/54H04B3/46
Inventor 鲍妍李立孙春光李斌王伟范振伟付华丰刘占利吴晓亮杨磊曹培磊吕继华
Owner 兆讯恒达科技股份有限公司
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