Title :
Channel Estimation Algorithms for MLSD in Optical Communication Systems
Author :
Foggi, Tommaso ; Colavolpe, Giulio ; Forestieri, Enrico ; Prati, Giancarlo
Author_Institution :
Dipt. di Ingegneria dell´´Inf., Parma Univ.
Abstract :
Maximum likelihood sequence detection represents the most efficient technique in the electrical domain to combat fiber impairments such as polarization-mode dispersion and group-velocity dispersion. In order to successfully apply this technique, it is mandatory to estimate some key channel parameters needed by the Viterbi processor. We propose a simple and effective solution based on the least-mean-square algorithm to perform such an estimation
Keywords :
channel estimation; least mean squares methods; maximum likelihood detection; maximum likelihood estimation; optical fibre communication; optical fibre dispersion; optical fibre polarisation; optical receivers; Viterbi processor; channel estimation algorithms; channel parameters; electrical domain; fiber impairments; group-velocity dispersion; least-mean-square algorithm; maximum likelihood sequence detection; optical communication systems; optical receiver; polarization-mode dispersion; AWGN; Additive white noise; Channel estimation; Gaussian noise; Optical fiber communication; Optical fiber polarization; Optical filters; Optical noise; Optical pulse shaping; Optical receivers; Maximum likelihood sequence detection (MLSD); Viterbi algorithm (VA); parameter estimation;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.882220
