Aymen Gatri- Northumbria University
Aymen Gatri
- Northumbria University
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7
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Introduction
Current institution
Publications
Publications (7)
We report the performance of a free space
optical (FSO) communications link employing binary phase
shift keying subcarrier intensity modulation (BPSK-SIM), 4-
ary pulse position modulation (4-PPM) and hybrid 4-PPMBPSK-
SIM, schemes in a controlled laboratory fog induced
environment. Fog is generated and controlled along a
dedicated indoor atmospher...
We report the effect of fog over a free space optical (FSO) communications system employing quadrature phase-shift keying (QPSK) and operating within three carrier wavelengths (0.65 μm, 1.55 μm, and 10 μm). We analyze the power losses on the receiver side and the link performance in terms of the received power level and the Q factor under clear and...
In this paper a hybrid PPM-BPSK modulation scheme is proposed. The numerical simulation results for the bit error rate (BER) performance of the PPM-BPSK modulation scheme in the lognormal atmospheric channel for a range of turbulence variance is presented. Results are compared with the BPSK-subcarrier intensity modulation (SIM) and 4-PPM, which sho...
In this paper a hybrid PPM-BPSK modulation scheme is proposed. The numerical simulation results for the Bbit Eerror Rrate (BER) performance of the PPM-BPSK modulation scheme in the lognormal atmospheric channel for a range of turbulence variance is presented. Results are compared with the BPSK-subcarrier intensity modulation (SIM) and 4-PPM, which...
In this paper, the effect of fog on a free space optical (FSO) communication link employing a coherent detection binary-phase-shift-keying modulation (BPSK) scheme is experimentally investigated. The experimental work is carried out in a controlled laboratory environment where fog could be generated and its impact on the FSO link investigated. The...
this paper reports experimental results for the performance of a free space optical (FSO) communication link employing binary-phase-shift-keying subcarrier modulation (BPSK) scheme under the influence of the atmospheric scintillation. A dedicated experimental atmospheric simulation chamber has been built up where weak and medium turbulence can be g...
