Title :
Quadrature diversity combining for pulse-amplitude modulated DMT in IM/DD channels
Author :
Vasconcelos, Celio K. H. ; Barreto, Andre N. ; Mello, Darli A. A.
Author_Institution :
Dept. of Electr. Eng., Univ. of Brasilia, Brasilia, Brazil
Abstract :
PAM-DMT is a transmission technique for IM/DD channels that can be effectively employed without a DC bias, by using only the quadrature component of QAM constellations. In this contribution, and based on an algorithm previously employed for AC-DMT [8], we show that the non-linear distortion that falls onto the in-phase component of the received signal also contains useful information, and can be adequately combined with the quadrature component to improve the detection performance.
Keywords :
diversity reception; pulse amplitude modulation; quadrature amplitude modulation; IM-DD channels; QAM constellations; nonlinear distortion; pulse-amplitude modulated DMT; quadrature component; quadrature diversity; transmission technique; Artificial neural networks; Decoding; Diversity reception; OFDM; Receivers; Signal to noise ratio;
Conference_Titel :
Global Communications Conference (GLOBECOM), 2014 IEEE
Conference_Location :
Austin, TX
DOI :
10.1109/GLOCOM.2014.7037116
