Title :
Experimental performance of 4D optimized constellation alternatives for PM-8QAM and PM-16QAM
Author :
Buelow, Henning ; Xiaofeng Lu ; Schmalen, Laurent ; Klekamp, Axel ; Buchali, Fred
Author_Institution :
Bell Labs., Alcatel-Lucent, Stuttgart, Germany
Abstract :
Sensitivity and reach of soft-decoded PM-8QAM was improved by 1.2-dB and 35%, respectively, by moving to a 64 point 4D constellation and iterative decoding. Replacing PM-16QAM by 256 4D points led to 0.3-dB gain only.
Keywords :
iterative decoding; multiplexing; optical fibre communication; quadrature amplitude modulation; 4D optimized constellation; PM-16QAM; gain 0.3 dB; iterative decoding; polarization multiplexing; soft-decoded PM-8QAM; Bit error rate; Decoding; Iterative decoding; Modulation; Optical noise; Signal to noise ratio;
Conference_Titel :
Optical Fiber Communications Conference and Exhibition (OFC), 2014
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-5575-2994-7
DOI :
10.1364/OFC.2014.M2A.6
