Title :
Novel baud-rate estimation technique for M-PSK and QAM signals based on the standard deviation of the spectrum
Author :
Ionescu, M.V. ; Erkilinc, M.S. ; Paskov, Milen ; Savory, Seb J. ; Thomsen, Benn C.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. Coll. London, London, UK
Abstract :
A robust baud-rate estimation technique that is integrated into a coherent receiver prior to digital equalization and intermediate frequency estimation based on the standard deviation of the signal spectrum is presented. It is shown to operate from 4 to 25 GBaud QPSK signals with a maximum estimation error of 2% at the FEC limit of 3.8·10-3.
Keywords :
frequency estimation; phase shift keying; quadrature amplitude modulation; quadrature phase shift keying; receivers; signal processing; FEC limit; M-PSK signals; QAM signals; QPSK signals; coherent receiver; digital equalization; intermediate frequency estimation; maximum estimation error; robust baud-rate estimation technique; signal spectrum standard deviation;
Conference_Titel :
Optical Communication (ECOC 2013), 39th European Conference and Exhibition on
Conference_Location :
London
Electronic_ISBN :
978-1-84919-759-5
DOI :
10.1049/cp.2013.1589
