Open AccessSimple optoelectronic frequency-offset estimator for coherent optical OFDM
Author(s) -
Jokhakar Jignesh,
Bill Corcoran,
Chen Zhu,
Arthur J. Lowery
Publication year - 2017
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.032161
Subject(s) - cyclic prefix , orthogonal frequency division multiplexing , optics , estimator , offset (computer science) , computer science , signal processing , frequency offset , optical communication , electronic engineering , digital signal processing , materials science , physics , telecommunications , mathematics , engineering , channel (broadcasting) , statistics , programming language , computer hardware
We propose a carrier frequency-offset estimator for optical OFDM systems using off-the-shelf optical components and simple digital processing as a replacement for the purely digital signal processing using the cyclostationarity property of optical OFDM signals with cyclic prefix. Simulations show the system accuracy of <4% estimate error within the range [-1250 + 1250] MHz offsets for a single polarization 28-Gbaud OFDM signal with 15% cyclic prefix. The effects of the system parameters on the performance are investigated.