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The Method of Improving the Performance of System Transmission System

A technology of transmission performance and communication system, applied in transmission systems, digital transmission systems, electrical components, etc., can solve problems such as restricting long-distance transmission applications, and achieve the effect of improving transmission distance, improving system transmission performance, and reducing OSNR.

Active Publication Date: 2015-09-30
FENGHUO COMM SCI & TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to solve the problem that the long-distance transmission application of the XFP module is limited by the performance of the internal components of the XFP module in the communication system

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  • The Method of Improving the Performance of System Transmission System
  • The Method of Improving the Performance of System Transmission System
  • The Method of Improving the Performance of System Transmission System

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Embodiment Construction

[0040] The invention provides a communication system and an XFP module, by adding a data processing unit at the receiving end of the XFP module, the XFP module can automatically and dynamically adjust the signal receiving threshold according to the quality of the received signal, so as to reduce the limit OSNR of the XFP module , to improve the transmission performance of the communication system. The present invention will be described in detail below in conjunction with the accompanying drawings.

[0041] The XFP module provided by the present invention includes a forward error correction decoding unit, a data processing unit, a signal receiving threshold adjustment unit and a storage unit, and the forward error correction decoding unit performs FEC decoding on the received digital signal in real time, and obtains the current "1" error correction and "0" error correction ratio C i with the corresponding preset value C 0 The first comparison result; the data processing unit...

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Abstract

The invention discloses a communication system, an XFP module and a method for improving transmission performances of the communication system. In the XFP module, a forward error correction decoding unit obtains a first comparison result between a ratio Ci of current '1' error correction to '0' error correction and a corresponding preset value C0 in real time, a data processing unit obtains a second comparison result between a current error correction line error rate BERi and a corresponding preset value BER0 in real time, a signal receiving threshold adjusting unit adjusts a signal receiving threshold Ni in real time according to the first comparison result and the second comparison result in real time, a storage unit stores the signal receiving threshold Ni that BER is superior to last time and the corresponding BER i, and a signal receiving threshold stored finally is taken as a signal receiving threshold of the XFP module. The data processing unit is added at a receiving end of the XFP module, and receiving judging thresholds are adjusted in real time according to receiving states of the XFP module to enable the XFP module to constantly maintain an optimal working state, so that ultimate OSNR (optical signal to noise ratio) of the system is lowered, and transmission performance of the system is improved.

Description

technical field [0001] The invention relates to a communication system, in particular to a communication system, an XFP module and a method for improving the performance of the system transmission system. Background technique [0002] In the existing wavelength division multiplexing (WDM) transmission system, two kinds of devices, MSA300Pin box module (Transponder) and miniaturized XFP module, are mainly used for WDM side service transmission. [0003] The Transponder module generally uses a lithium niobate modulator for code modulation, and generates optical signal output through data modulation, so its transmission distance is longer. The XFP module directly drives the laser component to output the NRZ optical signal through the NRZ (Not Return to Zero, non-return-to-zero) inversion encoded data signal, which is limited by the performance of the device, and the transmission distance is usually short. [0004] With the increasing demand for transmission data volume, the de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
Inventor 刘中华廖原龙熙平李健源孙艳香
Owner FENGHUO COMM SCI & TECH CO LTD
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