Title :
In-band OSNR estimation for Nyquist WDM superchannels
Author :
Ionescu, M.V. ; Sato, Mitsuhisa ; Thomsen, Benn C.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. Coll. London, London, UK
Abstract :
An in-band OSNR estimator exploiting the cyclostationarity of Nyquist WDM superchannels, prior to dynamic equalization in a digital coherent receiver, is demonstrated with an estimation accuracy ≤1.5dB for roll-offs higher than 0.21 for DP-16QAM and 0.15 for DP-QPSK.
Keywords :
channel estimation; equalisers; optical modulation; optical receivers; quadrature amplitude modulation; quadrature phase shift keying; wavelength division multiplexing; DP-16QAM; DP-QPSK; Nyquist WDM superchannel cyclostationarity; digital coherent receiver; dynamic equalization; in-band OSNR estimation; optical signal-to-noise ratio; Estimation; Frequency modulation; Optical noise; Receivers; Signal to noise ratio; Wavelength division multiplexing;
Conference_Titel :
Optical Communication (ECOC), 2014 European Conference on
Conference_Location :
Cannes
DOI :
10.1109/ECOC.2014.6964131
