Title :
Receiver Sensitivity Improvement of Optical Wireless Channels with Delayed-Diversified Pulse-Position Modulation
Author :
Kwok, C.H. ; Lau, F.K. ; Penty, R.V. ; White, I.H.
Author_Institution :
Univ. of Cambridge, Cambridge
Abstract :
We propose a simple approach to improve the receiver sensitivity in a line-of-sight optical channel using a delayed-diversified pulse-position-modulation scheme. A 5-dB sensitivity improvement is achieved over the conventional RZ-OOK scheme in the presence of atmospheric turbulence.
Keywords :
amplitude shift keying; optical receivers; pulse position modulation; wireless channels; RZ-OOK scheme; atmospheric turbulence; delayed-diversified pulse-position modulation; line-of-sight optical channel; optical wireless channels; receiver sensitivity improvement; Atmospheric modeling; Delay; Optical modulation; Optical pulses; Optical receivers; Optical refraction; Optical sensors; Optical transmitters; Pulse modulation; Wireless sensor networks;
Conference_Titel :
Lasers and Electro-Optics, 2007. CLEO 2007. Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-55752-834-6
DOI :
10.1109/CLEO.2007.4453193
