Title :
Quadrature duobinary modulation and detection
Author :
Chongjin Xie ; Sai Chen
Author_Institution :
Bell Labs., Alcatel Lucent, Holmdel, NJ, USA
Abstract :
We investigate the performance of quadrature-duobinary (QDB) modulation with both maximum-likelihood-sequence-estimation and symbol-by-symbol detection and show that QDB can achieve better performance than 8-ary quadrature-amplitude modulation (8QAM) and 16QAM at a 4-b/s/Hz spectral efficiency.
Keywords :
maximum likelihood sequence estimation; quadrature amplitude modulation; maximum-likelihood-sequence-estimation; quadrature duobinary modulation and detection; symbol-by-symbol detection; Channel spacing; Maximum likelihood estimation; Optical filters; Optical transmitters; Phase shift keying; Wavelength division multiplexing;
Conference_Titel :
Optical Fiber Communications Conference and Exhibition (OFC), 2015
Conference_Location :
Los Angeles, CA
