Title :
Faster-than-Nyquist DFT-S-OFDM using overlapping sub-bands and duobinary filtering
Author :
Chen Zhu ; Corcoran, Bill ; Morshed, Monir ; Leimeng Zhuang ; Lowery, Arthur J.
Author_Institution :
Electro-Photonics Lab., Monash Univ., Clayton, WA, Australia
Abstract :
We propose a novel single-channel Faster-than-Nyquist-DFT-S-OFDM transmitter that allows the sub-bands´ spectra overlap flexibly. By combing duobinary filtering to mitigate inter-sub-band interference, 12% more spectral efficiency is demonstrated in a super-channel experiment over 3360-km transmission.
Keywords :
OFDM modulation; discrete Fourier transforms; filtering theory; light interference; optical fibre communication; optical modulation; duobinary filtering; inter subband interference mitigation; multiband discrete-Fourier-transform spread OFDM; orthogonal frequency division multiplexing; overlapping subbands; single-channel faster-than-Nyquist-DFT-S-OFDM transmitter; spectral efficiency; Discrete Fourier transforms; Filtering; OFDM; Optical fibers; Optical filters; Optical receivers; Phase shift keying;
Conference_Titel :
Optical Fiber Communications Conference and Exhibition (OFC), 2015
Conference_Location :
Los Angeles, CA
