Title :
The chromatic dispersion estimation and compensation based on training symbols in CO-OFDM system
Author :
Wang, Zhansheng ; Qiao, Yaojun ; Ji, Yuefeng
Author_Institution :
Key Lab. of Inf. Photonics & Opt. Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
We present an efficient CD estimation and compensation method for CO-OFDM based on training symbol time-domain averaging (TSTA) and systematically investigate its robustness against transmission impairments such as the nonlinearity of MZ modulator, linewidth and frequency offset of laser. Numerical simulations are performed for a 112-Gb/s CO-OFDM system. Simulation results indicate that TSTA method can estimate and compensate for CD very well and only leads to 0.3 dB system penalty. Meanwhile, it merely occupies a little system resource.
Keywords :
OFDM modulation; compensation; estimation theory; time-domain analysis; CO-OFDM system; MZ modulator; bit rate 112 Gbit/s; chromatic dispersion estimation; compensation method; gain 0.3 dB; laser. frequency offset; linewidth; training symbol time-domain averaging method; Chromatic dispersion; OFDM; Optical modulation; Optical receivers; Optical sensors; Optical transmitters; Robustness; Extinction ratio; OFDM; TSTA; chromatic dispersion (CD); cyclic prefix (CP); frequency offset; linewidth;
Conference_Titel :
Broadband Network and Multimedia Technology (IC-BNMT), 2010 3rd IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-6769-3
DOI :
10.1109/ICBNMT.2010.5705110
