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Delay equalization method for realization of service code stream irrelevance by automatic mark insertion

An equalization method and delay technology, applied in the research field of transmission and delay equalization technology, can solve problems such as the inability to support multiple switching between dual channels, achieve accurate and error-free data transmission performance, enhance reliability and stability, and stabilize The effect of variable signal transmission delay

Active Publication Date: 2012-12-19
STATE GRID ELECTRIC POWER RES INST +2
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AI Technical Summary

Problems solved by technology

[0005] b) The general equalization process only supports switching from the main channel to the backup channel, and cannot support multiple switching between dual channels

Method used

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  • Delay equalization method for realization of service code stream irrelevance by automatic mark insertion
  • Delay equalization method for realization of service code stream irrelevance by automatic mark insertion
  • Delay equalization method for realization of service code stream irrelevance by automatic mark insertion

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Embodiment Construction

[0024] The technical solution of the present invention will be further described below in conjunction with the drawings and specific embodiments.

[0025] In an embodiment of the method of the present invention, the main functional modules of the delay equalization system include a transmitter-end flag insertion module, a receiver-end multi-channel clock unification module, a flag detection and multi-channel alignment module, and a flag elimination module. The signal flow passes through the above modules in order, and the user equipment cannot feel any change in the original data. The line actually uses multiple transmission channels for transmission and realizes the function of channel equalization.

[0026] The functions and implementation methods of each part are detailed below:

[0027] (1) Insert the module for the flag word of the sender

[0028] The main function is to receive the data stream of the user equipment, extract the original data clock, and through fine-tuning the cl...

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Abstract

The invention relates to a delay equalization method for realization of service code stream irrelevance by automatic mark insertion. According to the scheme, a whole set of channel equalization device which includes a sending part and a receiving part, is adapted to a multi-channel and multi-route network environment, and overcomes channel time varying influence is constructed by technical development such as code stream synchronization, cache adjustment, code stream aligning and the like, the device comprises functions of code stream adaption, mark insertion, code stream sending, code stream receiving, synchronous adjustment, cache aligning processing, uniform clock output and the like, the reliability and the stability of channel data transfer can be improved, and accurate and inerrant data transmission performance and stable and constant signal transfer time delay can be provided on the condition of multi-channel switching.

Description

Technical field [0001] The invention relates to the field of digital signal processing, in particular to the research of transmission and time delay equalization technology in relay protection signal communication. Background technique [0002] At present, most relay protections use digital channels. The time delay of a digital channel can be expressed as the transmission time of a specified code bit transition in the code stream through the channel. The actual measurement is generally to determine the transmission time of a specific code group in the code stream. The relay protection channels commonly used so far include lead channel, optical fiber channel, digital multiplex channel, etc. The composition and working principle of various channels are different, and the delay characteristics are also very different. Equalization technology usually refers to the compensation technology for channel signal distortion, which is used to compensate the distortion caused by uneven transm...

Claims

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Application Information

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IPC IPC(8): H04L7/00H04L25/03
CPCH04L25/14
Inventor 焦群丁鼎李万林孙洪武
Owner STATE GRID ELECTRIC POWER RES INST
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