Title :
Frequency offset estimation in a polarization-multiplexed coherent OFDM system stressed by chromatic dispersion and PMD
Author :
Karaki, Julie ; Pincemin, Erwan ; Jaouën, Yves ; Le Bidan, Raphaël
Author_Institution :
Orange Labs., France Telecom, Lannion, France
Abstract :
We propose here a simple method to estimate carrier frequency offset (CFO) in a polarization-multiplexed coherent OFDM (CO-OFDM) system. Compared to existing techniques, this method based on the determination of the shifted position of the last filled OFDM sub-carrier (located just before the zero or empty sub-carriers area) permits to easily compensate large CFO, while not affecting the system robustness when facing chromatic dispersion, first and second order PMD.
Keywords :
OFDM modulation; compensation; frequency estimation; multiplexing; optical fibre communication; optical fibre dispersion; optical fibre polarisation; CFO; OFDM subcarrier; carrier frequency offset; chromatic dispersion; coherent OFDM system; first order PMD; polarization multiplexing; second order PMD; Estimation; Frequency estimation; OFDM; Optical attenuators; Optical fibers; Optical polarization;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2012 Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4673-1839-6
