Title :
Orthogonal Basis Expansion-Based Phase Noise Suppression for PDM CO-OFDM System
Author :
Xi Fang ; Chuanchuan Yang ; Tingting Zhang ; Fan Zhang
Author_Institution :
State Key Lab. of Adv. Opt. Commun. Syst. & Networks, Peking Univ., Beijing, China
Abstract :
In this letter, we develop an orthogonal basis expansion (OBE)-based phase noise suppression method for polarization-division-multiplexed (PDM) coherent optical orthogonal frequency-division-multiplexing (CO-OFDM) systems. Compared with the conventional phase noise suppression approach, the OBE method not only significantly promotes the system tolerance of laser phase noise, but also improves the system robustness against nonlinear phase noise. The theoretical analysis is validated by numerical simulations of PDM CO-OFDM systems with 16-quadrature-amplitude-modulation format.
Keywords :
OFDM modulation; interference suppression; phase noise; quadrature amplitude modulation; 16-quadrature-amplitude-modulation format; OBE method; PDM CO-OFDM system; laser phase noise; nonlinear phase noise; numerical simulations; orthogonal basis expansion-based phase noise suppression; polarization-division-multiplexed coherent optical orthogonal frequency-division-multiplexing systems; system tolerance; Bit error rate; Discrete Fourier transforms; Laser noise; OFDM; Optical noise; Phase noise; Robustness; Optical communication; coherent communication; laser phase noise; nonlinear phase noise; orthogonal frequency-division-multiplexing (OFDM);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2013.2293515
