title: Comparison of the nonlinear transmission performance of quasi-Nyquist WDM and reduced guard interval OFDM.
abstract: The nonlinear transmission performance of quasi-Nyquist wavelength-division multiplexing (qN-WDM) and reduced guard interval orthogonal frequency-division multiplexing (RGI-OFDM) using polarization-division multiplexing quadrature phase-shift-keying (PDM-QPSK) and quadrature amplitude modulation (PDM-QAM-8 and PDM-QAM-16) with high information spectral densities have been compared for the first time, both by simulations and analytically. The results show that both systems are able to reach similar maximum transmission distances of approximately 6700km, 2600km and 1100km over standard single-mode fibre for the spectral efficiencies of 3.43 bits/s/Hz, 5.25 bits/s/Hz and 7 bits/s/Hz respectively.
authors.affiliation: Optical Networks Group, University College London, Electronic & Electrical Engineering, Torrington Place, London, WC1E 7JE, UK. s.kilmurray@ee.ucl.ac.uk
authors.forename: Sean
authors.initials: S
authors.lastname: Kilmurray
authors.forename: Tobias
authors.initials: T
authors.lastname: Fehenberger
authors.forename: Polina
authors.initials: P
authors.lastname: Bayvel
authors.forename: Robert I
authors.initials: RI
authors.lastname: Killey