Title :
Chromatic Dispersion Estimation in Digital Coherent Receivers
Author :
Soriano, Ruben Andres ; Hauske, Fabian N. ; Gonzalez, Neil Guerrero ; Zhang, Zhuhong ; Ye, Yabin ; Monroy, Idelfonso Tafur
Author_Institution :
DTU Fotonik, Tech. Univ. of Denmark, Lyngby, Denmark
fDate :
6/1/2011 12:00:00 AM
Abstract :
Polarization-diverse coherent demodulation allows to compensate large values of accumulated linear distortion by digital signal processing. In particular, in uncompensated links without optical dispersion compensation, the parameter of the residual chromatic dispersion (CD) is vital to set the according digital filtering function. We present different non-data-aided (blind) CD estimation methods for single-carrier transmission under implementation constraint conditions such as bandwidth limitation and sampling rate. The estimation performance for various modulation formats is compared with respect to precision and robustness for a wide range of combined channel impairments.
Keywords :
FIR filters; demodulation; light polarisation; optical dispersion; optical filters; optical information processing; optical receivers; quadrature phase shift keying; accumulated linear distortion; bandwidth limitation; channel impairments; chromatic dispersion estimation; digital coherent receivers; digital filtering function; digital signal processing; modulation formats; optical dispersion compensation; polarization-diverse coherent demodulation; sampling rate; single-carrier transmission; Cost function; Estimation; Filter banks; Finite impulse response filter; Matched filters; Optical filters; Chromatic dispersion (CD); digital coherent receiver; optical performance monitoring (OPM);
Journal_Title :
Lightwave Technology, Journal of
Conference_Location :
4/21/2011 12:00:00 AM
DOI :
10.1109/JLT.2011.2145357
