Effect of Scintillation on an Optical M-ary PPM over FSO Turbulent Channel with Pointing Error using APD Receiver

Analytical evaluation is presented on the bit error rate (BER) performance caused by atmospheric turbulence, pointing error and scintillation index utilizing Optical M-ary Pulse Position Modulation (O-MPPM) technique with avalanche photodiode (APD) receiver. The assertion of conditional along with u...

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Bibliographic Details
Published in2018 4th International Conference on Electrical Engineering and Information & Communication Technology (iCEEiCT) pp. 210 - 214
Main Authors Ara, Israt, Fairooz, Subah, M Nazrul Islam, A.K.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2018
Subjects
Adaptive optics
Atmospheric modeling
atmospheric turbulence strength
Avalanche photodiodes
Bit error rate
Hermite polynomial
Indexes
Optical attenuators
Optical MPPM
pointing error
Receivers
scintillation index
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Summary:Analytical evaluation is presented on the bit error rate (BER) performance caused by atmospheric turbulence, pointing error and scintillation index utilizing Optical M-ary Pulse Position Modulation (O-MPPM) technique with avalanche photodiode (APD) receiver. The assertion of conditional along with unconditional BER is established over probability density functions (pdf) of atmospheric turbulence strength and the attenuation caused by pointing error. A numerical evaluation is carried out to evaluate the effect of scintillation and APD gain when atmospheric turbulence and normalized pointing error is existing in the system and standard deviation on the BER performance of an O-MPPM system is seen at a bit rate of 10 Gbps. It is noticed that, significant deterioration in BER performance results occurs due to increasing scintillation index which can be effectively mitigated by increasing APD gain and O-MPPM order.
DOI:10.1109/CEEICT.2018.8628103