direct-detection optical communication system
BER Performance Analysis of an LDPC Coded OFDM Optical Wireless Communication System with Intensity Modulation and a Direct Detection Receiver
... Abstract: Optical wireless (OW) that is also known as free space optical (FSO) communication system are impaired by adverse weather conditions, such as rain, fog, cloud, snow and atmospheric ...
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A Blind Detection for Massive MIMO Outdoor Optical Wireless Communication System
... and variance ๐ โ 2 = ๐ 1 2 . And ๐ฌ is the ๐ ร 1-dimensional transmitted signal vector. In addition, we assume that the transmitter uses a repetitive coding scheme and power modulation with direct detection. ...
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Optical Fibres by using Digital Communication without Direct Current to Detect CFD
... fault detection logic implemented in the verification equipment We implemented the CFD system function and a digital relay function for data recording in the slave ...
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Quadrature Amplitude Modulation All Optical Orthogonal Frequency Division Multiplexing-dense Wavelength Division Multiplexing-optical Wireless Communication System under Different Weather Conditions
... wireless communication technologies, there has been an increasing and intensive demand for its development ...the optical wireless communication. In optical wireless communication, ...
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Performance analysis of direct detection and coherent detection system for optical OFDM using QAM and DPSK
... speed communication with mobile connectivity. High speed communication has been traditionally facilitated over wired infrastructure , particularly optical fiber, while mobile communication is ...
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OFDM in Free Space Optical Communication System
... The optical carrier can be modulated in its frequency, amplitude, phase, and ...with direct detection and phase modulation in combination with a homodyne or heterodyne ...In optical systems it ...
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1 05 Tb/s Optical OFDM Using ROF over 3600 km
... modern optical communication ...advanced optical communication systems because it offers robustness to narrowband interference and frequency selective fading ...in direct ...
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Gain Flattening of EDFA using Hybrid EDFA/Raman Amplifier with Reduced Channel Spacing
... the optical signals were converted to electrical signal then amplified and then reconverted to optical ...of optical amplifiers allowed the signal amplification in optical ...of optical ...
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Design Coding Format For Optical Fiber Communications
... an optical transmitter. In modern laser communication systems There are two type of optical light sources, such as Light emitting diode (LED) that give incoherent communication ...the ...
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Volume 1 | Issue 4 - 2011
... nanoshell-polymer system could remain in the body for ...Successful detection of sub-nanogram-per-milliliter quantities of immunoglobulin was achieved in saline, serum and whole blood in 10โ30 ...
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Design And Construction Of Instrumentation System To Study And Model The Effects Of Dense Fog On Radio Wave Propagation At Gsm Frequency.
... an Optical communication system (optical transmitter and receiver) capable of transmitting GSM frequencies via Laser diode at 900MHz and 1800MHz to study the effects of dense Fog on Radio wave ...
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PC TO PC OPTICAL FIBER COMMUNICATION SYSTEM
... internet communication, fiber optics network has taken a major role, allowing broadband communications with audios, videos, data and microwaves all traveling along the same fiber optic cable, creating the so ...
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A novel cooperative spectrum signal detection algorithm for underwater communication system
... the system large and the spectrum perception time long, and affects the overall performance of the ...signal detection, cognitive users only care about whether the spectrum is occupied or not, but do not ...
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Effect of Non Linear Impairments on Different Optical Fibers
... A communication system transmits information from one place to another, whether separated by a few kilometers or by transoceanic ...is optical and has a capacity of 100 Tb/s and ...of optical ...
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Development Of Object Tracking Architecture Based On Optical Flow Vector For Autonomous Motion Detection System
... implements optical flow vector technique. Detection of motion is crucial in many tasks depending on the need such as video surveillance, robotics, user interface by gestures, tracking of movement and many ...
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Achieving Optical Fiber Communication Experiments by OptiSystem
... Abstract-Recently, optical fiber communication technology have made great progress, where has been constantly exploring new technologies has greatly enhanced communications capabilities in the traditional ...
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FSO Optical System Utilizing DPSK Advance Modulation Technique
... the system, the CW laser is properly biased and the peak โto-peak voltage of the input signal cannot exceed the specified ...the system design it mean the transmitter and receiver design ...this ...
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Evaluate the Performance of Optical Time Division Demultiplexing with the Gain Saturation effect of Semiconductor Optical Amplifier
... Abstractโ Optical Time Division Multiplexing (OTDM) system technique is the extend time division multiplexing by optically combining a number of lower speed electronic baseband digital ...Semiconductor ...
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OPTICAL COMMUNICATION
... development since the 1970s to meet demands for new traffic types has come to a crisis. The complexity, cost and inherent limitations of layered networks are such that service providers must begin moving towards simpler, ...
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Modeling and Analyzing of UV Channels Characteristics in Various Configuration of Transmitters and Receivers for Building Manet
... (UV) communication networks and systems in the UV-C range of 200- 280 nm is determined by a number of key ...reliable communication in all possible directions, which is caused by the constant movement of ...
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