Title :
Experimental Comparison of PAM, CAP, and DMT Modulations in Phosphorescent White LED Transmission Link
Author :
Stepniak, G. ; Maksymiuk, L. ; Siuzdak, J.
Author_Institution :
Inst. of Telecommun., Warsaw Univ. of Technol., Warsaw, Poland
Abstract :
In the paper, an experimental comparison of pulse amplitude, carrierless amplitude-phase, and discrete multitone modulations is carried in a visible light communications link employing white phosphorescent light-emitting diode (LED) as a transmitter. By changing the modulation index, the influence of LED nonlinearity on the performance is studied. The results indicate similar performance of pulse-amplitude modulation (PAM) and carrier-less amplitude-phase (CAP) (with a slight advantage of the former) and substantially worse performance of DMT.
Keywords :
amplitude modulation; light emitting diodes; optical links; phosphorescence; pulse amplitude modulation; CAP modulation; DMT modulation; LED nonlinearity; PAM modulation; carrierless amplitude-phase modulation; discrete multitone modulations; light-emitting diode; modulation index; phosphorescent white LED transmission link; pulse amplitude modulation; visible light communications link; Attenuation; Bit error rate; Bit rate; Light emitting diodes; Lighting; Modulation; Receivers; Light emitting diodes; Visible light communications; light-emitting diodes;
Journal_Title :
Photonics Journal, IEEE
DOI :
10.1109/JPHOT.2015.2427092
