Title :
Electrical Dispersion Compensation for Multichip DPSK Detection Utilizing MISO DFE
Author :
Li, Juhao ; Zhang, Fan ; Chen, Zhangyuan
Author_Institution :
Key Lab. of Adv. Opt. Commun. Syst. & Networks, Peking Univ., Beijing, China
fDate :
4/1/2010 12:00:00 AM
Abstract :
Multichip differential phase-shift keying (MC-DPSK) is a promising method to improve the performance of DPSK signal. It has been proposed that a joint maximum likelihood sequence estimation (MLSE) equalizer can be utilized after MC-DPSK detection to further improve the chromatic dispersion (CD) and polarization-mode dispersion (PMD) tolerance in optical fiber transmission system. In this letter, we investigate electrical CD and PMD compensation for MC-DPSK detection with different chip numbers utilizing multiple-input-single-output (MISO) decision-feedback equalizers, which has less computation complexity than joint MLSE equalizers. Moreover, we propose the MISO equalization scheme after separate-photodiode MC-DPSK detection, which will further improve the distortion tolerance.
Keywords :
computational complexity; decision feedback equalisers; differential phase shift keying; maximum likelihood sequence estimation; optical distortion; optical fibre communication; optical fibre dispersion; DPSK signal; MISO DFE; MISO equalization; PMD compensation; chromatic dispersion; computational complexity; decision-feedback equalizers; distortion tolerance; electrical CD compesation; electrical dispersion compensation; joint maximum likelihood sequence estimation equalizer; multichip DPSK detection; multichip differential phase-shift keying; multiple-input-single-output; optical fiber transmission; photodiode; polarization-mode dispersion tolerance; Decision-feedback equalizer (DFE); electrical equalization; multiple-input–single-output (MISO); optical fiber communication;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2010.2040984
