Open AccessA New Modulation Technique to Improve Received Power Under Turbulence Effects For Free Space Optical Communication
Author(s) -
Abd Rahman,
Anas Tom,
Nur Alia Athirah Mohtadzar,
Ymy Buswig,
Nurdiani Zamhari,
Dyg Norkhairunnisa Abang Zaidel,
Siti Kudnie Sahari,
Norhuzaimin Julai
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/767/1/012035
Subject(s) - modulation (music) , on off keying , intensity modulation , keying , pulse position modulation , free space optical communication , amplitude shift keying , scintillation , electronic engineering , optical communication , power (physics) , modulation index , computer science , optics , pulse amplitude modulation , physics , telecommunications , bit error rate , quadrature amplitude modulation , pulse width modulation , phase shift keying , channel (broadcasting) , phase modulation , engineering , acoustics , pulse (music) , phase noise , detector , quantum mechanics
This paper focus on new modulation technique to improve the performance of the conventional modulation that uses intensity modulation/direct detection (IM/DD) for On-Off Keying (OOK) modulation. This new modulation technique that is Dual Diffuser Modulation (DDM) can create superior modulation with able to reduce scintillation index, enhance power received and threshold signal level. The analysis result shows that the free space optical (FSO) can have good performance of power received under strong turbulence. The DDM are better performance as compare with conventional IM/DD-OOK and IM/DD-OOK with diffuser. This can help FSO system to combat with severe turbulence effect for optimum operation.