Title :
Joint iterative carrier synchronization and signal detection for dual carrier 448 Gb/s PDM 16-QAM
Author :
Zibar, D. ; Carvalho, Luis ; Estaran, Jose ; Silva, Enrico ; Franciscangelis, Carolina ; Ribeiro, V. ; Borkowski, Robert ; Oliveira, Juliano ; Tafur Monroy, Idelfonso
Author_Institution :
DTU Fotonik, Tech. Univ. of Denmark, Lyngby, Denmark
Abstract :
Soft decision driven joint carrier synchronization and signal detection, employing expectation maximization, is experimentally demonstrated. Employing soft decisions offers an improvement of 0.5 dB compared to hard decision digital PLL based carrier synchronization and demodulation.
Keywords :
digital phase locked loops; expectation-maximisation algorithm; multiplexing; optical signal detection; quadrature amplitude modulation; synchronisation; bit rate 448 Gbit/s; dual carrier PDM 16-QAM; expectation-maximisation algorithm; hard decision digital PLL; joint iterative carrier synchronization; polarisation division multiplexing; signal detection; soft decision driven joint carrier synchronization;
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.2013.1606
