TY - JOUR
T1 - Noise-predictive BCJR equalization for suppression of intrachannel nonlinearities
AU - Djordjevic, Ivan B.
AU - Vasic, Bane
N1 - Funding Information: Manuscript received February 28, 2006; revised March 23, 2006. This work was supported by the National Science Foundation (NSF) under Grant ITR 0325979. The authors are with the Department of Electrical and Computer Engineering, University of Arizona, Tucson, AZ 85721 USA (e-mail: [email protected]). Digital Object Identifier 10.1109/LPT.2006.876757 Fig. 1. NP-BCJR equalization. OF: optical filter. PD: photodetector. EF: electrical filter.
PY - 2006/6/15
Y1 - 2006/6/15
N2 - An iterative equalization scheme for suppressing intrachannel nonlinearities in high-speed optical transmission systems operating at 40 Gb/s is presented. The proposed method employs a noise-predictive filter to mitigate the colored noise due to amplified spontaneous emission noise and optical filtering. The maximum a posteriori probability symbol detection implemented as the Bahl-Cocke-Jelinek-Raviv (BCJR) algorithm is employed to suppress the intrachannel nonlinear effects. Soft decision outputs provided by the noise-predictive BCJR equalizer are processed by an iterative low-density parity-check decoder.
AB - An iterative equalization scheme for suppressing intrachannel nonlinearities in high-speed optical transmission systems operating at 40 Gb/s is presented. The proposed method employs a noise-predictive filter to mitigate the colored noise due to amplified spontaneous emission noise and optical filtering. The maximum a posteriori probability symbol detection implemented as the Bahl-Cocke-Jelinek-Raviv (BCJR) algorithm is employed to suppress the intrachannel nonlinear effects. Soft decision outputs provided by the noise-predictive BCJR equalizer are processed by an iterative low-density parity-check decoder.
KW - Bahl-Cocke-Jelinek-Raviv (BCJR) algorithm
KW - Low-density parity-check (LDPC) codes
KW - Noise-predictive filter
KW - Optical communications
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U2 - 10.1109/LPT.2006.876757
DO - 10.1109/LPT.2006.876757
M3 - Article
SN - 1041-1135
VL - 18
SP - 1317
EP - 1319
JO - IEEE Photonics Technology Letters
JF - IEEE Photonics Technology Letters
IS - 12
ER -