TITLE:
Timing Synchronization Method for Asymmetrically Clipped DC Biased Optical OFDM System
AUTHORS:
Yong Wang
KEYWORDS:
Optical Wireless Communication, ADO-OFDM, Timing Synchronization
JOURNAL NAME:
Optics and Photonics Journal,
Vol.6 No.8B,
August
25,
2016
ABSTRACT: In a typical intensity-modulated direct-detection optical system, the information is carried on the intensity of the optical signal, and therefore can only be positive. Existing synchronization methods for RF-based OFDM system cannot be used directly in asymmetrically clipped DC biased optical of DM (ADO-OFDM) system. In order to solve the above problem, according to the characteristics of ADO-OFDM signal, the modified training symbol is presented. The simulation results show that the modified synchronization method gives good performance.