Title :
Receiver Sensitivity Improvement in Optical DQPSK and DQPSK/ASK through Data-Aided Multi-Symbol Phase Estimation
Author_Institution :
Bell Laboratories, Lucent Technologies, Holmdel, NJ 07733, USA, xliu20@lucent.com
Abstract :
We present a data-aided multi-symbol phase estimation scheme that improves the receiver sensitivities of direct-detection optical DQPSK and DQPSK/ASK. Sensitivity improvements of 1.7dB and 1.4dB are respectively obtained for DQPSK and DQPSK/ASK in the linear-regime.
Keywords :
Amplitude shift keying; Detectors; Flip-flops; Optical interferometry; Optical modulation; Optical receivers; Optical sensors; Phase estimation; Phase shift keying; Photodiodes;
Conference_Titel :
Optical Communications, 2006. ECOC 2006. European Conference on
Conference_Location :
Cannes, France
Print_ISBN :
978-2-912328-39-7
Electronic_ISBN :
978-2-912328-39-7
DOI :
10.1109/ECOC.2006.4801186
