Title :
Estimating OSNR of equalised QPSK signals
Author :
Ives, David J. ; Thomsen, Benn C. ; Maher, Robert ; Savory, Seb J.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. Coll. London, London, UK
Abstract :
We propose and demonstrate a technique to estimate the OSNR of an equalised QPSK signal. When combined with a single point calibration the OSNR of the input signal was estimated to within 0.5 dB.
Keywords :
optical communication; quadrature phase shift keying; OSNR estimation; equalised QPSK signal; single point calibration; Adaptive optics; Optical noise; Optical receivers; Optical signal processing; Phase shift keying; Signal to noise ratio;
Conference_Titel :
Optical Communication (ECOC), 2011 37th European Conference and Exhibition on
Conference_Location :
Geneva
Print_ISBN :
978-1-4577-1918-9
