optical on-off-keying
Performance Enhancement of Data Communication through Visible Light Communication Using On Off Keying
... short-range optical wireless communication using the visible light spectrum from 380 to ...modulating optical sources, such as light emitting diodes (LEDs) and laser diodes which are fasten than the ...
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CODED ON OFF KEYING SYSTEM FOR FREE SPACE OPTICAL LINK OVER STRONG TURBULENCE AND MISALIGNMENT FADING CHANNELS
... On-Off Keying Free-Space Optical Links over Fading Channels” International Journal of Engineering Trends and Technology (IJETT) – Volume 4 Issue 5- May ...
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Design of Visible Light Communication Receiver for On Off Keying Modulation by Adaptive Minimum Voltage Cancelation
... converting optical signals to electrical voltage, the proposed adaptive minimum-voltage detector (AMD) for tracking the minimum value of the converted voltage signal, a differential amplifier (DA) for removing the ...
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Polarization Shift Keying Modulation: A Novel Modulation Technique for FSO Systems
... Free-space optical communication (FSO) refers to communication of optical data over unguided propagation ...free-space optical communication systems High degree of attenuation provided by haze, rain, ...
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Real-Time Text Transmission Implemented For Underwater Wireless Communication Using a LED Array
... On-Off Keying modulation (Manchester ...as optical pulses through the wireless ...these optical pulses are sensed by a photodetector and interpreted into an electrical signal which is ...
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Polymer colour converter with very high modulation bandwidth for visible light communications
... this limit, as they have a shorter emission lifetime (in the order of nanoseconds), and consequently higher communication bandwidths can be obtained. 6–8 Semiconducting polymers are low cost, solution-processable ...
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Polymer colour converter with very high modulation bandwidth for visible light communications
... this limit, as they have a shorter emission lifetime (in the order of nanoseconds), and consequently higher communication bandwidths can be obtained. 6–8 Semiconducting polymers are low cost, solution-processable ...
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On Off Frequency Shift Keying for Wideband Fading Channels
... including recently Imperial College, Stanford, and Harvard. Dr. Poor’s research interests are in the areas of advanced signal process- ing, wireless networks, and related fields. Among his publications in these areas is ...
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Next Generation Large Capacity Long Distance Fiber To The Home
... large-capacity optical transmission and the optical devices for optical transmission systems have supported the evolution of information and communications ...on-off keying was the ...
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Improvement in Performance of Free Space Optical Communication
... On-Off Keying (OOK) ...point-to-point optical links can be implemented using infrared laser light, although low-data-rate communication over short distances is possible using ...free-space ...
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Comparative Analysis of OOK, BPSK, DPSK and PPM Modulation Techniques for Intersatellite Free Space Optical Communication
... Space Optical (FSO) communication, which uses modulated carrier wave as a laser ...Free-space optical communication is the latest technology that has a lot of popularity as an alternative to radio frequency ...
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Implementation of Shortened Pulse Position Modulation for Optical Communication Systems
... decades, optical communication systems have been one of the popular ...for optical communication ...On-Off Keying (VOOK), Pulse Dual Slope Modulation (PDSM) have been recently proposed for ...
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Security Enhancement of Optical Code Division Multiple Access System Using Multicode-Keying Encryption
... ON-OFF Keying (OOK) OCDMA, data bits can be easily distinguished by an eavesdropper using a simple energy detector in the uplink side of the user, without the need of decoding the codeword in ...
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Comparison the Performance of Free-Space Optical Communication with OOK and BPSK Modulation under Atmospheric Turbulence
... Free-space optical communications (FSO) propagated over a clear atmosphere suffers from irradiance fluctuation caused by small but random atmospheric temperature ...space optical (FSO) communication systems ...
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Online Full Text
... of optical tapped-delay line (OTDL) as the incoherent OCDMA decoder is also ...For optical signature sequences, we have used a coding scheme based on double-padded modified prime code ...
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Complete LabVIEW Code for Polarization Shift Keying and Error Correction
... IJSRR, 7(2) April – June, 2018 Page 510 error correction using Hamming code. LabVIEW modules have been developed earlier to specifically work for optical communication. But they are essentially training modules ...
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Evaluation of SNR for AWGN, Rayleigh and Rician Fading Channels Under DPSK Modulation Scheme with Constant BER
... Fading refers to the distortion that a carrier-modulated telecommunication signal experiences over certain propagation media. In wireless systems, fading is due to multipath propagation and is sometimes referred to as ...
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Quenching Oscillator Modeling for OOK Super-Regenerative Transmitter
... Reducing the value of k from 2 to 1.02, the start-up time is slowed down as stated in (21), which gives signals and spectrum as shown in Figure 8. Here, the oscillation is smoothed at one side. At switch-off time ...
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Online Full Text
... Lastly, we examine and study long haul transmission by creating loop to study the performance of the system using forward error correction (FEC). The loop consisted of a standard single mode fiber (SSMF) of length 75 km ...
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Simulation of Digital Modulation Techniques Using MATLAB
... The drawback of BPSK is rapid amplitude change between symbols due to phase discontinuity, which requires infinite bandwidth. Binary Phase Shift Keying (BPSK) demonstrates better performance than ASK and BFSK. ...
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