Method for conducting frequency domain information extending on data symbols in power line carrier communication

A power line carrier and data symbol technology, which is applied in the field of frequency domain information expansion, can solve problems such as reducing reliability and increasing reception errors, and achieves the effect of simplifying processing circuits and improving communication reliability.

Active Publication Date: 2017-11-24
WU QI TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, the power line channel shows obvious time-varying characteristics. When ROBO expansion is used to generate data symbols, the same information bit is mapped to different symbols, which will increase the probability of receiving errors and reduce reliability.

Method used

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  • Method for conducting frequency domain information extending on data symbols in power line carrier communication
  • Method for conducting frequency domain information extending on data symbols in power line carrier communication
  • Method for conducting frequency domain information extending on data symbols in power line carrier communication

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Embodiment Construction

[0035] based on the following Figure 1 to Figure 5 , specifically explain the preferred embodiment of the present invention.

[0036] Such as Figure 4 As shown, the present invention provides a method for generating data symbols in power line carrier communication, which specifically includes the following steps:

[0037] Step S1, performing scrambling processing on the data to be transmitted;

[0038] Step S2, performing turbo encoding on the scrambled data;

[0039] Step S3, performing channel interleaving on the Turbo coded data;

[0040] Step S4 , performing frequency-domain information diversity expansion on the data after channel interleaving multiple times in the same symbol to generate data symbols.

[0041] Such as Figure 5 As shown, in step S4, the step of performing frequency-domain information diversity expansion multiple times specifically includes:

[0042] The N information bits are grouped according to the number of diversity extensions B×M, and each g...

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Abstract

The invention discloses a method for conducting frequency domain information extending on data symbols in power line carrier communication. When the data symbols are generated in the power line carrier communication, multi-frequency domain information diversity extension is utilized to replace original ROBO extension, the diversity extension is irrelevant to time-varying features of a channel, and is only relevant to the features of the channel, and the diversity extension is completed in one symbol, which is beneficial to simplifying processing circuits of frequency domains, and meanwhile improving of communication reliability.

Description

technical field [0001] The invention relates to a method for expanding frequency domain information on data symbols in power line carrier communication. Background technique [0002] With the application of power line carrier communication technology more and more widely, people have more and more strict requirements on the reliability of information transmission through power line media, and the national grid power line transmission standard was born (hereinafter referred to as the national grid standard). Such as figure 1 As shown, it is a schematic diagram of the communication frame format in the technical standard of the State Grid Corporation of China. The order of the communication frame in terms of time is: at the beginning there are 13 leading symbols, followed by 4 or 12 frame control character symbols, and finally the transmission data symbol. Such as figure 2 As shown, it is the description of the generation method of the frame control character in the nationa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/34H04L27/26H04B3/54
CPCH04B3/54H04L27/2602H04L27/2605H04L27/34H03M13/27H03M13/2957H04L5/0044H03M13/2771
Inventor 韦韧古强李洪兵陈佰儒曾安辉
Owner WU QI TECH INC
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