Simultaneous chromatic dispersion and PMD compensation by using coded-OFDM and girth-10 LDPC codes.
Low-density parity-check (LDPC)-coded orthogonal frequency division multiplexing (OFDM) is studied as an efficient coded modulation scheme suitable for simultaneous chromatic dispersion and polarization mode dispersion (PMD) compensation. We show that, for aggregate rate of 10 Gb/s, accumulated dispersion over 6500 km of SMF and differential group delay of 100 ps can be simultaneously compensated with penalty within 1.5 dB (with respect to the back-to-back configuration) when training sequence based channel estimation and girth-10 LDPC codes of rate 0.8 are employed.
Djordjevic
Ivan B
IB
University of Arizona, Department of Electrical and Computer Engineering, Tucson, AZ 85721, USA. ivan@ece.arizona.edu
Xu
Lei
L
Wang
Ting
T