Title :
Signal predistortion for nonlinear transmitters in direct-detection OFDM over multimode fibers
Author :
Vasconcelos, Celio K. H. ; Barreto, Andre N. ; Mello, Darli A. A. ; Simoes, Fabio D.
Author_Institution :
Dept. of Electr. Eng., Univ. of Brasilia, Brasilia, Brazil
Abstract :
This paper investigates the transmission of OFDM signals, generated by a directly-modulated VCSEL, over an optical channel estimated from experimental measurements in OM-3 multimode fibers. Simulation results indicate limitations on the system performance due to the nonlinear L-I curve of the VCSEL. We show that, in these conditions, the system performance can be improved by transmitter predistortion.
Keywords :
OFDM modulation; channel estimation; optical fibre communication; optical modulation; optical transmitters; surface emitting lasers; OM-3 multimode fibers; direct-detection OFDM; directly-modulated VCSEL; nonlinear transmitters; optical channel estimation; signal predistortion; vertical cavity surface emitting lasers; Modulation; OFDM; Optical fibers; Optical transmitters; Predistortion; Vertical cavity surface emitting lasers;
Conference_Titel :
Telecommunications Symposium (ITS), 2014 International
Conference_Location :
Sao Paulo
DOI :
10.1109/ITS.2014.6948043
