Title :
Digital clock recovery with adaptive loop gain to overcome channel impairments in 112 Gbit/s CP-QPSK receivers
Author :
Hebebrand, C. ; Napoli, A. ; Bianciotto, A. ; Calabro, S. ; Spinnler, B. ; Rosenkranz, W.
Author_Institution :
Dept. of Commun., Univ. of Kiel, Kiel, Germany
Abstract :
The effective loop parameters of digital PLL based clock recovery schemes vary with the degree of impairments in the received signal. We present a novel scheme that guarantees stable PLL design parameters independently of input signal distortions.
Keywords :
digital phase locked loops; distortion; optical receivers; quadrature phase shift keying; CP-QPSK receiver; adaptive loop gain; bit rate 112 Gbit/s; channel impairment; digital PLL based clock recovery; signal distortions; Adaptive control; Bandwidth; Clocks; Delay; Detectors; Mathematical model; Phase locked loops;
Conference_Titel :
Optical Communication (ECOC), 2010 36th European Conference and Exhibition on
Conference_Location :
Torino
Print_ISBN :
978-1-4244-8536-9
Electronic_ISBN :
978-1-4244-8534-5
DOI :
10.1109/ECOC.2010.5621268
