Title :
On the study of the FSO link performance under controlled turbulence and fog atmospheric conditions
Author :
Rajbhandari, S. ; Ghassemlooy, Z. ; Perez, J. ; Le Minh, H. ; Ijaz, M. ; Leitgeb, E. ; Kandus, G. ; Kvicera, V.
Author_Institution :
Northumbria Opt. Commun. Res. Group, Northumbria Univ., Newcastle upon Tyne, UK
Abstract :
In this paper, the effect of turbulence and fog on the free space optical (FSO) communication systems for on-off-keying (OOK), pulse amplitude modulation (PAM) and subcarrier intensity modulation (SIM) based on binary phase shift keying (BPSK) is experimentally investigated. The experiment is carried out in a controlled laboratory environment where turbulence and fog could be generated in a dedicated FSO chamber. In comparison to 4-PAM signal, the BPSK and OOK-NRZ modulation signalling format are more robust against the fog and turbulence effects. In addition BPSK system is much less susceptible to the signal amplitude fluctuation due to turbulence compared to the other two modulation formats.
Keywords :
amplitude shift keying; atmospheric turbulence; fog; intensity modulation; optical communication; optical links; phase shift keying; pulse amplitude modulation; telecommunication signalling; 4-PAM signal; BPSK modulation signalling format; FSO chamber; FSO link performance; OOK-NRZ modulation signalling format; PAM; SIM; binary phase shift keying; controlled turbulence effect; fog atmospheric condition; free space optical communication systems; nonreturn-to zero; on-off-keying; pulse amplitude modulation; signal amplitude fluctuation; subcarrier intensity modulation; Adaptive optics; Binary phase shift keying; Integrated optics; Optical attenuators; Optical fiber communication; Q factor;
Conference_Titel :
Telecommunications (ConTEL), Proceedings of the 2011 11th International Conference on
Conference_Location :
Graz
Print_ISBN :
978-1-61284-169-4
Electronic_ISBN :
978-3-85125-161-6
