free-space optical communication link
Investigating Wavelength Dependency of Terrestrial Free Space Optical Communication Link
... Free space optical communication involves fiber-less optical based data transmission using visible and infrared bands of the ...FSO link performance which is seriously affected ...
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Evaluation of Free Space Optical Communication Link for Moderate Atmospheric Turbulence
... . The involvement of humidity to the refractive index fluctuation is not accounted for in Equation 4 because this is negligible at optical wavelengths . Further on the position and time-dependent index of ...
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Saturation in cascaded optical amplifier free space optical communication systems
... generates optical noise in the form of amplified spontaneous emission ...an optical preamplifier, there is no fundamental reason not to operate optical preamplifiers in the saturation regime [18] and ...
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Analysis of the effect of BER and Q-factor on free space optical communication system using diverse wavelength technique
... on free space optical communication system using the diverse wavelength ...at link range of 1 km, and Q-factor 25 at the system performance BER = 10 -124 could improve the ...
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Light Attenuation Measurements at 650 and 850nm Wavelengths in Dense Fog and Smoke for FSO Applications
... of free space optical (FSO) communication systems operating at visible and near infrared (NIR) wavelengths (650nm and 850nm) under fog and smoke was experimentally ...maximum link span ...
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An Algorithm of Wireless Sensor Network Based on Free Space Optical Communication
... node link to some ...the optical transceiver array unit in the surface and side of cylinder, integrate the control system, laser transmitter with information processing system inside the ...
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Free Space Optical Communication System under Different Weather Conditions
... 3.3 Snow Condition: Snowflakes are ice crystals that come in a variety of shapes and sizes. In general, snow tends to be larger than rain. Whiteout conditions might attenuate the beam, but scattering doesn't tend to be a ...
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Performance Evaluation of Free Space Optical Wireless Communication
... Free space optics (FSO) provides a low cost, rapidly deployable method of gaining access to the fiber optic ...FSO link can be procured and installed for as little as one-tenth of the cost of laying ...
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Underwater Free-Space Optical Communication Using Smart Transmitters and Receivers.
... underwater optical links, the Reed-Solomon (RS) code was chosen for its robustness and relative ease of ...underwater link, in which the noise can be modeled as Additive White Gaussian Noise (AWGN), this ...
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Evaluate the Performance of a LDPC Coded FSO System Employing Q-PPM as Modulation Technique
... Free-space optical (FSO) communications is a cost effective and high bandwidth access technique, which is receiving growing attention with recent commercialization successes ...FSO ...
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Free Space Optical Communication against Channel Fading
... downlink or uplink constitutes the capacity rate region for that link. Recently, an important duality has been discovered between the rate regions for the downlink and uplink channels. In order to understand the ...
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Forward-Error Correction Coding for Underwater Free-Space Optical Communication
... FSO link is limited by transmitter power and water ...a communication system is through the use of forward-error correction ...FSO link, this translates into lower transmitter power requirements or ...
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Link Margin Optimization of Free Space Optical Link under the Impact of Varying Meteorological Conditions
... a free space optical technology synonymous to optical wireless communication and often called as open- air photonics or infrared ...In free space optical ...
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SPATIAL DIVERSITY TECHNIQUES IN MIMO WITH FREE SPACE OPTICAL COMMUNICATION
... In this paper we have described Multiple Input and Multiple Output (MIMO) with Free Space Optical (FSO) link using spatial diversity technique. Here we have used different combining techniques ...
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Free Space Optical Communication
... maintain a critical role in ensuring that at any given time, a company can continue to function through interdepartmental communication and connection to the resources necessary for development. Corporate ...
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Comparison of Polarization Shift Keying and Amplitude Shift Keying Modulation Techniques in FSO
... Free-space optical communication system is an optical communication technology which uses air as a medium to transmit signal from one place to other in the form of light ...laser ...
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Improvement in Performance of Free Space Optical Communication
... Free space optics (FSO) communications provides an enormous and unregulated bandwidth where a data rate in excess of 100 Gbit/s is achievable over a distance of 1-4 ...The free space ...
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Free Space Optical Communication: A Review
... a free space laser link is subjected to ...influence optical transmissions heavily, because raindrops have the size of a few millimetres and are large compared to laser wavelengths ...the ...
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DP DQPSK Optical Access System Integrated with Fiber and Free Space Downlink for High Spectral Efficiency Application
... DP-DQPSK optical fiber link with FSO communication system is shown in Figure ...parallel optical carriers. For each optical carrier, two cascaded phase modulators (PM1 and PM2, or PM3 ...
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OFDM in Free Space Optical Communication System
... indoor link ranges over short range and the outdoor connectivity range is greater than the indoor ...outdoor link is established with LOS connectivity that is affected greatly by the atmospheric ...the ...
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