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Transmitter and receiver of communication system and synchronization method thereof

A technology of communication system and transmitter, applied in transmission system, distribution line transmission system, communication between multiple stations, etc., can solve problems such as large interference range, short duration, bit error, etc., and achieve reliability problem effect

Inactive Publication Date: 2010-06-09
MIARTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, impulse noise has a great impact on PLC communication quality. Due to its large interference amplitude and short duration, bit errors and burst errors will occur during continuous data transmission.
[0005] It can be seen that the environment of low-voltage power line channels is very complicated

Method used

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  • Transmitter and receiver of communication system and synchronization method thereof
  • Transmitter and receiver of communication system and synchronization method thereof
  • Transmitter and receiver of communication system and synchronization method thereof

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Embodiment Construction

[0045] In order to solve the problem of reliable communication on low-voltage power line communication channels and other periodically changing channels, the present invention proposes a communication system. And verification strategy, to detect and identify the valid data interval, to establish accurate synchronization capture. It is worth noting that, in the following embodiments, although the low-voltage power line carrier communication system is used for description, the present invention is also applicable to other periodically changing channels. The effective data of the sender can avoid the noise occurrence area, so as to realize reliable data transmission.

[0046] figure 1 A structural block diagram of a low-voltage power line carrier communication system according to an embodiment of the present invention is shown, and the specific description is as follows:

[0047]The communication system 1000 includes a transmitter 100 and a receiver 110 which are coupled by a l...

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Abstract

The invention discloses transmitter and receiver of communication system and synchronization method thereof. The invention aims at the characteristics of periodically changed strong noise, high attenuation, signal distortion and the like of low-voltage network channels, the transmitter transmits modulated data in time in noncontiguous manner to avoid periodically worsened time zones of the channels; a single capture and verify strategy adopted by the receiver detects and identifies effective data intervals to establish accurate synchronous capture. The harmful effects onto communication caused by the severe environment of the channels can be overcome when the invention is adopted in low-voltage power line carrier communication systems, thereby enabling the reliability of the communicationsystems to be improved.

Description

technical field [0001] The present invention relates to a system synchronization method and device for communication on a special channel, in particular to a transmitter and a receiver of a communication system, and a synchronization method between the transmitter and the receiver. Background technique [0002] The alternating current transmitted by the power line of the utility grid only occupies the frequency resources of 50Hz / 60Hz. Therefore, the power line has a wide frequency band available. Power line carrier communication (PLC) system transmits information by superimposing high frequency signals on power line signals. The system has attracted widespread attention in recent years due to its advantages of wide network distribution, no need for re-wiring and easy maintenance. It is one of the important directions for the development of PLC system to further develop the ubiquitous power grid into a data communication network, especially for fast and reliable data commun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/707H04B7/26H04B3/54
Inventor 陈晓雁孙鉴
Owner MIARTECH
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