Open Access400 Gbit/s 256 QAM-OFDM transmission over 720 km with a 14 bit/s/Hz spectral efficiency by using high-resolution FDE
Author(s) -
Tatsunori Omiya,
Masato Yoshida
Publication year - 2013
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.21.002632
Subject(s) - orthogonal frequency division multiplexing , quadrature amplitude modulation , polarization division multiplexing , qam , optics , transmission (telecommunications) , multiplexing , spectral efficiency , bit error rate , electronic engineering , physics , computer science , telecommunications , wavelength division multiplexing , channel (broadcasting) , engineering , wavelength
We demonstrate 400 Gbit/s frequency-division-multiplexed and polarization-division-multiplexed 256 QAM-OFDM transmission over 720 km with a spectral efficiency of 14 bit/s/Hz by using high-resolution frequency domain equalization (FDE) and digital back-propagation (DBP) methods. A detailed analytical evaluation of the 256 QAM-OFDM transmission is also provided, which clarifies the influence of quantization error in the digital coherent receiver on the waveform distortion compensation with DBP.