A novel BTC decoding algorithm based on the genetic algorithm in optical communication systems

Abstract

Combining the advantages of both the genetic algorithm (GA) and the chase decoding algorithm, a novel improved decoding algorithm of the block turbo code (BTC) with lower computation complexity and more rapid decoding speed is proposed in order to meet the developing demands of optical communication systems. Compared with the traditional chase decoding algorithm, the computation complexity can be reduced and the decoding speed can be accelerated by applying the novel algorithm. The simulation results show that the net coding gain (NCG) of the novel BTC decoding algorithm is 1.1 dB more than that of the traditional chase decoding algorithm at the bit error rate (BER) of 10⁻⁶. Therefore, the novel decoding algorithm has better decoding correction-error performance and is suitable for the BTC in optical communication systems.

Keywords

Genetic Algorithm / Decode Algorithm / Optical Communication System / Code Vector / Observation Code

References

[1] Nakazawa. Masataka and Kikuchi, High Spectral Density Optical Communication Technologies, 2010, New York, Springer

[2] XuB, XieJ. IET Communication, 2010, 4: 1247

[3] DjordjevicI B, ArabaciM, MinkovL L. Journal of Lightwave Technology, 2009, 27: 3518

[4] YuanJ-g, WangW, LiangT-y. Journal of Optoelectronics·Laser, 2012, 23: 906

[5] YuanJ, YeW. Optik, 2009, 120: 758

[6] UengY-L, WangY-L, KanL-S, YangC-J, SuY-H. IEEE Transactions on Signal Processing, 2012, 60: 4387

[7] DjordjevicI B, XuL, WangT, CvijeticM. IEEE Communications Letters, 2008, 12: 684

[8] YuanJ-g, XuL, TongQ-z. Optoelectronics Letters, 2013, 9: 0378

[9] ITU-T G.975.1. Forward Error Correction for High Bit Rate DWDM Submarine Systems, 2003,

[10] ITU-T G.975. Forward Error Correction for Submarine Systems, 1996,

[11] PyndiahR. IEEE Transactions on Communications, 1998, 46: 1003

[12] ObiedatE A, CaoL. IEEE Signal Processing Letters, 2010, 17: 363

[13] Al-DweikA, Le GoffS, SharifB. IEEE Transactions on Communications, 2009, 57: 1229

[14] ChaseD. IEEE Transactions on Information Theory, 1972, 18: 170

[15] YuanJ-g, WangL, HeQ-p. Optik, 2013, 124: 1986