Performance enhancement of BPSK-SIM- and DPSK-SIM-based FSO downlink over atmospheric turbulence using aperture averaging and receiver diversity

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dc.contributor.authorKrishnan, P.
dc.contributor.authorJha, G.K.
dc.contributor.authorWalia, A.
dc.date.accessioned2026-02-05T09:29:46Z
dc.date.issued2019
dc.description.abstractIn this paper, we evaluate the bit error rate (BER) performance of a free-space optical satellite downlink by considering the atmospheric turbulence effects using binary shift keying subcarrier intensity modulation and differential phase shift keying subcarrier intensity modulation (DPSK-SIM). The performance of the link is enhanced using aperture averaging and receiver diversity. The closed form mathematical expressions of BER for BPSK-SIM and DPSK-SIM schemes are derived and analyzed. It is observed that on varying the turbulence level, the performance of the link degrades when the turbulence level increases. The improved BER of 10?12 and 10?10 at signal-to-noise ratio of 30 dB of the link for both BPSK-SIM and DPSK-SIM is obtained by using aperture averaging (aperture diameter, D = 10 cm) and receiver diversity with optimal combining. © 2019, Springer Science+Business Media, LLC, part of Springer Nature.
dc.identifier.citationPhotonic Network Communications, 2019, 38, 1, pp. 142-150
dc.identifier.issn1387974X
dc.identifier.urihttps://doi.org/10.1007/s11107-019-00836-0
dc.identifier.urihttps://idr.nitk.ac.in/handle/123456789/24431
dc.publisherSpringer New York LLC barbara.b.bertram@gsk.com
dc.subjectAtmospheric thermodynamics
dc.subjectBinary phase shift keying
dc.subjectBit error rate
dc.subjectPhase shift
dc.subjectSignal receivers
dc.subjectSignal to noise ratio
dc.subjectTurbomachinery
dc.subjectAperture averaging
dc.subjectAtmospheric turbulence effects
dc.subjectBit error rate (BER) performance
dc.subjectDifferential phase-shift keying
dc.subjectFree space optics
dc.subjectPerformance enhancements
dc.subjectReceiver diversity
dc.subjectSubcarrier intensity modulation
dc.subjectAtmospheric turbulence
dc.titlePerformance enhancement of BPSK-SIM- and DPSK-SIM-based FSO downlink over atmospheric turbulence using aperture averaging and receiver diversity

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