Super forward error correction hardware decoding method and apparatus thereof

Abstract

The invention discloses a super forward error correction hardware decoding method and an apparatus thereof. The hardware decoding method of the invention comprises the following steps of: adopting BCH (2040, 1952) code for calculating the syndrome of reception channel output data and solving the error position polynomial thereof; carrying out money search to determine the code element error position among BCH code words and accordingly correct the error, and completing decoding processing of the code elements of BCH code words one by one; carrying out interlacing processing every time the decoding of each internal code BCH code element is processed, calculating RS code word syndrome of the decoding result, solving error position polynomial and error value polynomial, carrying out money search according to the error position polynomial, determining the code element error position of the RS code word, calculating error value according to the error value polynomial and conducting error correction, completing the decoding of the code elements of RS code word one by one; and carrying out deinterlacing on output data, thereby obtaining SFEC decoding result. The invention can correctly realize the whole algorithm with hardware circuit of relatively small scale and improve the realization sequential speed of SFEC hardware.

Description

technical field [0001] The invention relates to the field of channel error correction coding and decoding in an optical communication system, in particular to a super-strong forward error correction hardware decoding method and device. Background technique [0002] With the popularization and rapid development of the Internet, the traffic volume of communication has increased greatly, so it is necessary to adopt WDM (Wavelength Division Multiplexing, wavelength division multiplexing) or DWDM (Dense Wavelength Division Multiplexing, dense wavelength division multiplexing) technology to increase the line rate to 10Gb / s, 40Gb / s or even higher. [0003] In long-distance, ultra-long-distance or large-capacity DWDM optical fiber communication systems, signal attenuation and channel noise will be caused by fiber dispersion and long-distance transmission, and signal attenuation, channel noise, and the distance between multiple wavelengths in a fiber Interference will greatly reduce...

AI Technical Summary

Problems solved by technology

[0011] Since super forward error correction involves relatively complex interleaving, deinterleaving, and encoding and decoding algorithms, and the current super forward error correction technology is in a non-standardized and non-transparent state, so how to use efficient Hardware circuit to correctly implement the entire algorithm, and obtain a higher hardware timing speed, is a difficult point to achieve super forward error correction

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