free-space 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 due to ...
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Saturation in cascaded optical amplifier free space optical communication systems
... OA is able to adjust its gain to new power levels by providing higher gains to lower input powers and lower gains to higher input powers thereby allowing for its use in scintillation suppression. This essentially ...
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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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Underwater Free-Space Optical Communication Using Smart Transmitters and Receivers.
... underwater link, in which the noise can be modeled as Additive White Gaussian Noise (AWGN), this code provides a 4 dB improvement over the uncoded data at a bit-error-rate of 10 −5 ...
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Improvement in Performance of Free Space Optical Communication
... The performance of the FSO link is hampered by some atmospheric conditions such as- fog, smoke, rain, snow etc. There are few other circumstances when the performance of the FSO system may get affected which ...
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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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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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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 communication, data is ...
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An Algorithm of Wireless Sensor Network Based on Free Space Optical Communication
... physical link established, we adopt the hierarchical distributed control network, propose efficient FSO sensor network rout- ing protocol OEEMRP (Optical Efficient Energy Multi-path Routing ...of free ...
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Analysis of Deep Space Telecommunication System Parameters, Design Control, Link Analysis and Space Communication Bands
... At this point it is important t o note that interplanetary space is necessarily the same as free s pace as far as the propagation of microwave signals is solicited. In the absence of weather effects, 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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SPATIAL DIVERSITY TECHNIQUES IN MIMO WITH FREE SPACE OPTICAL COMMUNICATION
... FSO link. Hence we can conclude that the performance of 4X4 MIMO FSO link is better than 2X2 MIMO FSO link and MIMO-FSO system guarantees the performance over SISO ...
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A STUDY OF FREE SPACE OPTICS IN RADIO FREQUENCY COMMUNICATION
... framework is additionally decreased by this framework [20, 21]. RF innovation is additionally extremely valuable regarding long inaccessible communication particle where no viewable pathway is accessible. In some ...
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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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Free Space Optical Communication
... data link over through free ...optical communication system is extremely difficult to intercept without affecting the signal itself, and without prior knowledge of the equipment used to transmit and ...
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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 refraction ...
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Optical Transceiver Design And Geometric Loss Measurement For Free Space Optic Communication
... Free Space Optics (FSO) is an exelent supplement to conventional radio link and fiber ...optical free-space visible light transceiver as a basis for indoor wireless networking ...point ...
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DP DQPSK Optical Access System Integrated with Fiber and Free Space Downlink for High Spectral Efficiency Application
... The setup for the seamless integration of DP-DQPSK optical fiber link with FSO communication system is shown in Figure 2. At the transmitter, a continuous-wave (CW) light beam from a distributed feedback ...
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Role of Wavelength Division Multiplexing Scheme in Free Space Optical Communication Systems
... The proposed FSO link is varied from 16 km to 20 Km for analysing the system response. Figure 2 signifies system performance in terms of minimum bit error rate and maximum Q factor with respect to free ...
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Free Space Optical Communication: A Review
... a free space laser link is subjected to scintillations. Attenuation is caused by the weather conditions along the transmission path. Generally, there is low atmospheric attenuation during clear days ...
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