FPGA assisted design of concatenated LDPC convolutional and BCH codes for optical fiber communications

Yi Cai, Warning Wang,Weifeng Qian,Kai Tao,Ming Lei,Junjie Yin,Xin Zhou,Shihua Zhang,Hung-Chang Chien

45th European Conference on Optical Communication (ECOC 2019)（2019）

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Abstract

Employing FPGA emulations, we investigate effects of code length, girth, decoding buffer size on LDPC convolutional codes. We construct a 26.3% concatenated LDPC-convolutional and BCH code that approaches within 0.79 dB of the Shannon limit, a new record at 10 ⁻¹⁵ BER with hardware-verification.

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Key words

FORWARD ERROR CORRECTION,LOW-DENSITY-PARITY-CHECK CODE,CONVOLUTIONAL CODE,FIELD PROGRAMMABLE GATE ARRAY,ERROR FLOOR,OPTICAL FIBER COMMUNICATION

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