Free-space optical link
Performance Analysis of Radio Over Free Space Optical Link Under the Effect of different Attenuation Factors Using Advanced Modulation Formats
... Over Free space optics is a promising and under developed technique in a optical communication system to increase capacity and decreasing the system costs for future broadband ...over free ...
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CODED ON OFF KEYING SYSTEM FOR FREE SPACE OPTICAL LINK OVER STRONG TURBULENCE AND MISALIGNMENT FADING CHANNELS
... of optical wireless systems deteriorates to a large extent from the presence of turbulence and pointing error ...keying free-space optical systems through symbol by symbol interleaved channels ...
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Link Margin Optimization of Free Space Optical Link under the Impact of Varying Meteorological Conditions
... For optical links covering a few hundred meters or more distances, atmospheric turbulence can cause severe error rates due to the random fluctuations in the received signal ...of free space ...
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A proposed rain attenuation prediction method for free space optical link based on rain rate statistics
... In order to develop r for all percentage of time the model [21] needs to multiply by a factor so that can be fit with our local measurements of rain rate. Model [20] is developed based on Malaysia climate and it is a ...
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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 due to ...
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Implementation of FSO Network under the Impact of Atmospheric Turbulences
... through free space optical link under three different atmospheric conditions and the performance is measured in terms of SNR, total power and Eye ...Transmission link is prolongs to ...
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Design and Implementation of Free Space Optics
... (free space) on low-power light beams at speeds of megabytes or even gigabytes per ...A free- space optical link consists of two optical transceivers which are accurately ...
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Evaluate the Performance of a LDPC Coded FSO System Employing Q-PPM as Modulation Technique
... Abstract—Free space optics (FSO) is a promising solution for the need to very high data rate point-to point ...a free space optical link using LDPC coded Q- ary optical ...
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A Survey of Free Space Optical Communication Network Channel over Optical Fiber Cable Communication
... a free space optics ...short link displacements between antennas. This short link provides reliability, speed, and diverse nature of signal in temporary and bad weather ...conditions. ...
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An Algorithm of Wireless Sensor Network Based on Free Space Optical Communication
... In general, FSO network can be divided into point-to-point, point-to-multipoint and mesh network structure, and user can choose appropriate topology according to actual application. The point-to-point is suitable for ...
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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 in ...
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Model for the prediction of rain attenuation affecting free space optical links
... in link outage ...and space). Fog has the most detrimental impact on optical waves: specific attenuation due to dense fog is as high as 300 dB/km for a visibility of around 50 m ...
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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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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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SPATIAL DIVERSITY TECHNIQUES IN MIMO WITH FREE SPACE OPTICAL COMMUNICATION
... telecommunication, Free Space Optics [FSO] provides an optical communication technology which uses light energy to transmit the information from one point to another ...the optical fiber due ...
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Free Space Optical Using Different Modulation Techniques – A Review
... schemes, link with M-PPM scheme gives the best performance in terms of BER followed by M-DPPM and OOK schemes with or without diversity techniques in presence of turbulence and different weather conditions in ...
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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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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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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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Comparison of wavelength propagation for free space optical communications
... the link range on the atmospheric attenuation in low visibility is also ...and link range of ...of link range between transmitter and receiver contribute to high atmospheric attenuation ...
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