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Real-Time Digital Signal Processing for the Generation of Optical Orthogonal Frequency-Division-Multiplexed Signals

Benlachtar, Y; Watts, PM; Bouziane, R; Milder, PA; Koutsoyannis, RJ; Hoe, JC; Puschel, M; (2010) Real-Time Digital Signal Processing for the Generation of Optical Orthogonal Frequency-Division-Multiplexed Signals. IEEE J SEL TOP QUANT , 16 (5) 1235 - 1244. 10.1109/JSTQE.2010.2041899.

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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).

Type: Article
Title: Real-Time Digital Signal Processing for the Generation of Optical Orthogonal Frequency-Division-Multiplexed Signals
DOI: 10.1109/JSTQE.2010.2041899
Keywords: Digital-to-analog converter (DAC), digital signal processing (DSP), field-programmable gate array (FPGA), inverse fast Fourier transform (IFFT), optical orthogonal frequency-division multiplexing (OFDM), optical transmission, OFDM TRANSMISSION, ELECTRONIC PREDISTORTION, SSMF FIBER, SYSTEMS, DESIGN, DSP
UCL classification: UCL > School of BEAMS > Faculty of Engineering Science > Electronic and Electrical Engineering
URI: http://discovery.ucl.ac.uk/id/eprint/1311397
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