Title :
Quadrature imbalance compensation algorithms for coherent PDM QPSK systems
Author :
Petrou, C.S. ; Vgenis, A. ; Roudas, I. ; Raptis, L.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Patras, Rio, Greece
Abstract :
We compare three quadrature imbalance compensation algorithms for coherent PDM-QPSK systems, including a novel, blind, adaptive equalizer. We show that dedicated quadrature imbalance compensation is mandatory and cannot be performed by regular distortion mitigating equalizers.
Keywords :
adaptive equalisers; blind equalisers; compensation; quadrature phase shift keying; adaptive equalizer; blind equalizer; coherent PDM QPSK systems; polarization division multiplexed; quadrature imbalance compensation; regular distortion mitigating equalizers; Adaptive equalizers; Application specific integrated circuits; Optical distortion; Optical filters; Optical polarization; Optical receivers; Phase estimation; Photoconductivity; Quadrature phase shift keying; Signal processing algorithms;
Conference_Titel :
LEOS Annual Meeting Conference Proceedings, 2009. LEOS '09. IEEE
Conference_Location :
Belek-Antalya
Print_ISBN :
978-1-4244-3680-4
Electronic_ISBN :
1092-8081
DOI :
10.1109/LEOS.2009.5343407
