Title :
Demonstration of PMD Compensation by LDPC-Coded Turbo Equalization and Channel Capacity Loss Characterization Due to PMD and Quantization
Author :
Minkov, L.L. ; Djordjevic, I.B. ; Batshon, H.G. ; Xu, L. ; Wang, T. ; Cvijetic, M. ; Kueppers, F.
Author_Institution :
Univ. of Arizona, Tucson
Abstract :
Polarization-mode dispersion (PMD) compensation by low-density parity-check (LDPC) coded turbo equalization is experimentally demonstrated for a nonreturn-to-zero (NRZ) system operating at 10 Gb/s. This technique provides significant improvement of bit-error rate compared to the optimum threshold receiver. The channel capacity loss due to PMD and quantization is studied as well. It was found that the proposed PMD turbo equalizer is about 1.5 dB away from the theoretical limit.
Keywords :
channel capacity; equalisers; error statistics; optical fibre communication; optical fibre dispersion; optical fibre polarisation; optical receivers; parity check codes; turbo codes; bit rate 10 Gbit/s; bit-error rate; channel capacity loss characterization; low-density parity-check coded turbo equalization; nonreturn-to-zero system; optical transmission system; optimum threshold receiver; polarization-mode dispersion compensation; Bit error rate; Channel capacity; Degradation; Equalizers; High speed optical techniques; Iterative decoding; National electric code; Optical signal processing; Parity check codes; Quantization; Channel capacity; equalization; low-density parity-check (LDPC) codes; polarization-mode dispersion (PMD) compensation;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.907636
