Open AccessInvestigation of spectrally shaped DFTS-OFDM for long haul transmission
Author(s) -
Susmita Adhikari,
Sander Jansen,
Maxim Kuschnerov,
Beril Inan,
Marc Bohn,
Werner Rosenkranz
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.00b608
Subject(s) - orthogonal frequency division multiplexing , bandwidth (computing) , transmission (telecommunications) , optics , electronic engineering , dispersion (optics) , computer science , materials science , telecommunications , physics , channel (broadcasting) , engineering
DFTS-OFDM has been proposed recently as an alternative to coherent optical OFDM due to its improved transmission performance. This paper proposes spectral shaping for DFTS-OFDM which reduces the PAPR leading to further improvement in nonlinear tolerance. It is shown that for both SSMF and LEAF, the optimized spectrally shaped DFTS-OFDM outperforms DFTS-OFDM for dispersion managed and unmanaged links by ~10.8% and ~6.8%, respectively. The number of bands and the excess bandwidth parameters are also investigated to optimize the transmission performance.