A ameliorating scheme of forward error correction code in optical communication systems

A novel scheme based on the consecutive concatenated-codes with interleaving to ameliorate the current Forward Error Correction (FEC) coding technologies for optical communication systems are proposed. The analyses of the simulation results show that the two consecutive concatenated code type with interleaving of the RS(255,239)+RS(255,239) code and the RS(255,239)+RS(255,223) code are a superior coding scheme with the advantages such as the better error correction, moderate redundancy and easy realization compared to the classic RS (255,239) code and other codes, and their net coding gain (NCG) are respectively 2dB～3dB more than that of the RS(255,239)code at the Bit Error Rate (BER) of 10-12. Therefore, they can better be used in high-speed long-haul optical communication systems. Finally, the arrangement of the frame structure for the novel consecutive concatenated code is probed to lay a firm foundation in designing its hardware.