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

Volume

22

Issue

16

fYear

2010

Firstpage

1250

Lastpage

1252

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);

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2010.2052096

Filename

5483102