Title :
Real-Time Digital Signal Processing for the Generation of Optical Orthogonal Frequency-Division-Multiplexed Signals
Author :
Yannis Benlachtar;Philip M. Watts;Rachid Bouziane;Peter A. Milder;Robert J. Koutsoyannis;James C. Hoe;Markus Püschel;Madeleine Glick;Robert I. Killey
Author_Institution :
Department of Electronic and Electrical Engineering, University College London, London, U.K.
Abstract :
In this paper, we investigate the design of a field-programmable-gate-array (FPGA) based optical orthogonal frequency-division multiplexing (OFDM) transmitter implementing real-time digital signal processing at 21.4 GSample/s. The transmitter was utilized to generate 8.34 Gb/s QPSK-OFDM signals for direct detection. We study the impact of the finite resolutions of the inverse fast Fourier transform cores and the digital-to-analog converters on the system performance. Furthermore, we describe a transmission experiment over 800 and 1600 km of uncompensated standard fiber with negligible optical SNR penalties and bit error rate <; 10-3.
Keywords :
"Digital signal processing","Signal generators","Optical signal processing","Signal processing","Optical transmitters","Optical design","Signal design","Field programmable gate arrays","Frequency division multiplexing","OFDM"
Journal_Title :
IEEE Journal of Selected Topics in Quantum Electronics
DOI :
10.1109/JSTQE.2010.2041899
