Title :
Receiver sensitivity improvement using decision-aided maximum likelihood phase estimation in coherent optical DQPSK system with nonlinear phase noise
Author :
Zhang, Shaoliang ; Kam, Pooi Yuen ; Chen, Jian ; Yu, Changyuan
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore
Abstract :
We propose a decision-aided maximum likelihood phase estimation receiver for a nonlinear-phase-noise-dominant coherent optical DQPSK system, which requires only linear computation and improves the receiver sensitivity by 3 dB compared to differential detection.
Keywords :
differential phase shift keying; light coherence; maximum likelihood estimation; nonlinear optics; optical noise; optical receivers; phase estimation; phase noise; coherent optical DQPSK system; decision-aided maximum likelihood phase estimation; differential detection; nonlinear-phase-noise; receiver sensitivity; Maximum likelihood detection; Maximum likelihood estimation; Nonlinear optics; Optical computing; Optical noise; Optical receivers; Optical sensors; Phase detection; Phase estimation; Phase noise; (060.2360) Fiber optics links and subsystems; (320.5550) Coherent communications;
Conference_Titel :
Lasers and Electro-Optics, 2008 and 2008 Conference on Quantum Electronics and Laser Science. CLEO/QELS 2008. Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-55752-859-9
