Title :
Clustering Based Sequence Equalizer in Direct Detection DQPSK optical signaling
Author :
Georgoulakis, Kristina ; Glentis, George-Othon
Author_Institution :
Dept. of Inf. & Telecommun., Univ. of Peloponnese, Tripoli, Greece
Abstract :
In this paper, a Clustering Based Sequence Equalizer is proposed in the context of Intensity Modulated Direct Detection optical communications links operating at 40Gb/s using Differential Quadrature Phase-Shift Keying signaling. The equalizer provides an attractive implementation of the Maximum Likelihood Sequence Estimation, comprising of two successive steps, namely a) nonparametric estimation of the channel response using a cluster based approach and b) sequence estimation using the Viterbi algorithm. The performance of the cluster based sequence equalizer is investigated my means of computer simulation.
Keywords :
equalisers; intensity modulation; maximum likelihood sequence estimation; nonparametric statistics; optical links; optical signal detection; pattern clustering; quadrature phase shift keying; telecommunication signalling; bit rate 40 Gbit/s; channel response; clustering based sequence equalizer; differential quadrature phase shift keying; direct detection DQPSK optical signaling; intensity modulated direct detection optical communications link; maximum likelihood sequence estimation; nonparametric estimation; Channel estimation; Equalizers; Maximum likelihood estimation; Measurement; Optical fiber communication; Receivers; Cluster Based Equalizer; Differential Quadrature Phase-Shift Keying; Direct Detection; Maximum Likelihood Sequence Estimation; Optical Communication;
Conference_Titel :
Transparent Optical Networks (ICTON), 2015 17th International Conference on
Conference_Location :
Budapest
DOI :
10.1109/ICTON.2015.7193300
