Title :
An optimized 16-QAM constellation for mitigating impairments of phase noise and limited transmitter ENOB in optical coherent detection systems
Author :
Nguyen, An T. ; Wing Chau Ng ; Rusch, Leslie A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. Laval, Quebec City, QC, Canada
Abstract :
A new 16-QAM constellation is proposed combatting laser phase noise and limited resolution of high speed digital-to-analog converters. Experimental results show small but consistent performance improvement at low and high baud-rates compared with square and other reported constellations.
Keywords :
analogue-digital conversion; optical modulation; quadrature amplitude modulation; quadrature phase shift keying; 16-QAM constellation; QPSK modulation; baud-rates; effective-number-of-bits; high speed digital-to-analog converters; impairment mitigation; laser phase noise; limited transmitter ENOB; optical coherent detection systems; Bit error rate; Optical attenuators; Optical distortion; Optical noise; Phase noise; Quantization (signal); Signal to noise ratio;
Conference_Titel :
Optical Communication (ECOC), 2014 European Conference on
Conference_Location :
Cannes
DOI :
10.1109/ECOC.2014.6964123
