Title :
DFT-Spread OFDM for Fiber Nonlinearity Mitigation
Author :
Tang, Yan ; Shieh, William ; Krongold, Brian S.
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Melbourne, Melbourne, VIC, Australia
Abstract :
We study the transmission performance of the recently proposed multiband discrete-Fourier-transform spread orthogonal frequency-division multiplexing (MB-DFT-S-OFDM) format in which each subband is in essence a single-carrier signal with Nyquist bandwidth. We have found that the optimal subband bandwidth for a 428-Gb/s MB-DFT-S-OFDM signal is 15 and 3 GHz for inline dispersion compensated (IDC) and nondispersion compensated (NDC) fiber links, respectively. The optimized MB-DFT-S-OFDM outperforms the coherent single-carrier by 1 dB (0.8 dB) after 1000-km transmission over IDC (NDC) links.
Keywords :
OFDM modulation; discrete Fourier transforms; frequency division multiplexing; optical fibre communication; optical fibre dispersion; Nyquist bandwidth; OFDM; bit rate 428 Gbit/s; distance 1000 km; fiber nonlinearity mitigation; inline dispersion compensated fiber link; multiband discrete Fourier transform spread orthogonal frequency division multiplexing; nondispersion compensated fiber link; single carrier signal; Coherent communications; fiber nonlinearity mitigation; orthogonal frequency-division multiplexing (OFDM);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2010.2052096
