Title :
Performance of QPSK modulation for FSO geo-synchronous satellite communication link under atmospheric turbulence
Author :
Jignesh, D. Jokhakar ; Sripati, U. ; Kulkarni, Milind
Author_Institution :
E&C Dept., NITK, Mangalore, India
Abstract :
In recent years, free space optical (FSO) communication has gained a considerable interest amongst the researchers due to certain benefits it has to offer over RF links such as availability of large unlicensed bandwidth, high data rates, negligible electromagnetic interference, ease of installation etc. However the conventionally used FSO systems use On-Off Keying (OOK) as the modulation technique. Such a link requires high levels of transmit power. In this paper, we have suggested the use of QPSK modulation technique which allows us to reap the benefits of coherent detection. Our calculations show that QPSK is more inert to the changes in atmospheric conditions like temperature, air pressure, humidity, aerosol concentration etc.
Keywords :
amplitude shift keying; atmospheric turbulence; optical communication; quadrature phase shift keying; satellite communication; FSO geo-synchronous satellite communication link; FSO systems; OOK; QPSK modulation performance; QPSK modulation technique; RF links; aerosol concentration; air pressure; atmospheric conditions; atmospheric turbulence; coherent detection; data rates; electromagnetic interference; free space optical communication; humidity; modulation technique; on-off keying; unlicensed bandwidth; Equations; Optical fiber communication; Optical transmitters; Phase shift keying; Receivers; Scattering; Air Pressure; FSO; QPSK; Temperature;
Conference_Titel :
Emerging Research Areas and 2013 International Conference on Microelectronics, Communications and Renewable Energy (AICERA/ICMiCR), 2013 Annual International Conference on
Conference_Location :
Kanjirapally
Print_ISBN :
978-1-4673-5150-8
DOI :
10.1109/AICERA-ICMiCR.2013.6575977
