Based on the genetic algorithm(GA),a new genetic probability decoding(GPD) scheme for forward error correction(FEC) codes in optical transmission systems is proposed.The GPD scheme can further offset the quantificatio...Based on the genetic algorithm(GA),a new genetic probability decoding(GPD) scheme for forward error correction(FEC) codes in optical transmission systems is proposed.The GPD scheme can further offset the quantification error of the hard decision by making use of the channel interference probability and statistics information to restore the maximal likelihood transmission code word.The theoretical performance analysis and the simulation result show that the proposed GPD scheme has the advantages of lower decoding complexity,faster decoding speed and better decoding correction-error performance.Therefore,the proposed GPD algorithm is a better practical decoding algorithm.展开更多
A 7-chip, 280 Gb/s optical code-division multiplexing （OCDM） system incorporating quaternary phase coding and decoding superstructured fiber Bragg gratings （SSFBGs） is experimentally demonstrated. Only ordinary ph...A 7-chip, 280 Gb/s optical code-division multiplexing （OCDM） system incorporating quaternary phase coding and decoding superstructured fiber Bragg gratings （SSFBGs） is experimentally demonstrated. Only ordinary phase masks and sub-micrometer precision are needed to fabricate the encoding and decoding SSFBGs. Interchannel interference noise is also considered and evaluated, 2-channel 40 （Gb/s）/channel （2 ×40 Gb/s） signal transmission is demonstrated.展开更多
基金supported by the National Natural Science Foundation of China (Nos.61071117 and 61003256)the Natural Science Foundation of Chongqing CSTC (No.2010BB2409)the Science and Technology Foundation of Chongqing Municipal Education Commission (No.KJ110519)
文摘Based on the genetic algorithm(GA),a new genetic probability decoding(GPD) scheme for forward error correction(FEC) codes in optical transmission systems is proposed.The GPD scheme can further offset the quantification error of the hard decision by making use of the channel interference probability and statistics information to restore the maximal likelihood transmission code word.The theoretical performance analysis and the simulation result show that the proposed GPD scheme has the advantages of lower decoding complexity,faster decoding speed and better decoding correction-error performance.Therefore,the proposed GPD algorithm is a better practical decoding algorithm.
基金This work was supported by the state "863" High Technology Program of China under Grant No. 2002AA122035.
文摘A 7-chip, 280 Gb/s optical code-division multiplexing （OCDM） system incorporating quaternary phase coding and decoding superstructured fiber Bragg gratings （SSFBGs） is experimentally demonstrated. Only ordinary phase masks and sub-micrometer precision are needed to fabricate the encoding and decoding SSFBGs. Interchannel interference noise is also considered and evaluated, 2-channel 40 （Gb/s）/channel （2 ×40 Gb/s） signal transmission is demonstrated.
