Title :
Pilot decision-aided maximum likelihood phase estimation in coherent optical QPSK and 8PSK systems with nonlinear phase noise
Author :
Li, Xiaojing ; Zhang, Shaoliang ; Yu, Changyuan ; Kam, Pooi Yeun
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore, Singapore
Abstract :
We propose pilot decision-aided maximum likelihood phase estimation for nonlinear-phase-noise-dominant coherent optical phase-shift-keying (PSK) systems. The receiver sensitivity is shown to be improved by ~1 dB compared to the differentially encoded PSK counterparts.
Keywords :
maximum likelihood estimation; optical modulation; optical noise; optical receivers; phase noise; quadrature phase shift keying; coherent optical quadrature phase shift keying; nonlinear phase noise; optical 8PSK systems; pilot decision-aided maximum likelihood phase estimation; receiver sensitivity; Fiber nonlinear optics; Maximum likelihood estimation; Nonlinear optics; Optical filters; Optical noise; Optical receivers; Phase estimation; Phase noise; Phase shift keying; Quadrature phase shift keying; (060.1660) Coherent communications; (060.2360) Fiber optics links and subsystems;
Conference_Titel :
Lasers and Electro-Optics, 2009 and 2009 Conference on Quantum electronics and Laser Science Conference. CLEO/QELS 2009. Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-55752-869-8
Electronic_ISBN :
978-1-55752-869-8
