optical digital pulse-position modulation
Adaptive differential amplitude pulse position modulation technique for optical wireless communication channels based on fuzzy logic
... Abstract: Optical wireless communication has the potential for extremely high data rates of up to tens of ...hybrid modulation technique named adaptive differential amplitude pulse-position ...
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Digital anisochronous pulse time modulation techniques
... high-speed digital PPM: the laser transmitter must be fast, the receiver must have a wide bandwidth and the digital coder/decoder must operate at the digital PPM clock rate, resulting in bandwidth ...
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An Investigation of an Optical Multiple Pulse Position Modulation Link over a Dispersive Optical Channel
... an optical fibre PPM channel was considered by Garrett [45] in ...space optical communications. Divsalar and Gagliardi [48] considered an optical-RF relay deep space communication link that transmits ...
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Pulse position modulation coding schemes for optical intersatellite links
... Digital PPM coding can operate with very low average power and offer a high sensitivity, thus it is the preferred choice for optical inter-satellite ...
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Power Spectral Density of Dicode Pulse Position Modulation
... (dicode pulse-position modulation) is a novel coding scheme for optical-fibre ...Previous pulse position modulation schemes have been proposed such digital ...
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Digital pulse interval modulation for optical communication systems
... only digital PTM scheme that can support high quality signal ...other digital PTM schemes available capable of delivering high quality signals with less circuit complexity compared to ...schemes ...
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Optical fibre digital pulse position modulation assuming a Gaussian received pulse shape
... Optical fibre digital pulse position modulation assuming a Gaussian received pulse shape Optoelectronics [see also IEE Proceedings Optoelectronics], IEE Proceedings J Optical fibre digital pulse posit[.] ...
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Performance evaluation of digital pulse position modulation for wavelength division multiplexing FSO systems impaired by interchannel crosstalk
... the optical amplifier (OA) which is done by collimating them into a short fibre length at the amplifier input before being demultiplexed into different wavelengths for detection by a PIN ...The optical ...
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Analysis of Offset Pulse Position Modulation
... the optical link on a bit-by-bit basis (binary encoding) or on a data word basis (block ...into digital format by using pulse code modulation ...
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Experimental coder/decoder of dicode pulse position modulation
... Many Pulse Position Modulation (PPM) formats have been investigated in the past such as Multiple Pulse Position Modulation (MPPM) [1-2], Differential Pulse Position ...
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Pulse time modulation for subcarrier multiplexed systems
... higher optical power levels nonlinear distortion and RIN can increase the noise ...an optical network can be achieved in two ...the optical power level can be minimised to deliver a specified ...the ...
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Adaptive differential amplitude pulse position modulation technique (DAPPM) using fuzzy logic for optical wireless communication channels
... reported modulation techniques for IM/DD in optical communication is the On-Off ...a pulse is transmitted if the code bit is „one‟ during a fixed time slot and a „zero‟ is represented by the absence ...
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FSO Cooperative System Analysis for DF based Relay
... This sections shows outage analysis, error analysis, and information theory analysis for proposed two-hop FSO system using DF relay are discussed. Table II shows the simulation parameters used in the paper also ...
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Fuzzy inference system based adaptive modulation scheme for optical wireless communication
... The optical wireless channel was limited by channel constraints such as the maximum allowable optical power and available ...The optical wireless channel can be easily affected by modulation ...
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Simulation of Spread Spectrum Radar Using Rake at the Receiver End
... Abstract—Intelligent Transport Systems (ITS) are becoming a reality, driven by navigation safety requirements and by the investments of car manufacturers and Public Transport Authorities all around the world. ITS make it ...
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Reduction in sidelobe and SNR improves by using Digital Pulse Compression Technique
... MATLAB. Digital pulse compression by matched filter perform in matlab software with the help of ...programming. Pulse compression is implemented to improve the radar range resolution long ...
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Bipolar chaotic pulse position modulation communication system based on cyclic LDPC
... In Figure 3, we can see that the sent data are grouped in every two bits. In each round, the first bit data and the chaotic map determine the position of pulse and the second bit determines its polarity. ...
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Cascade H-bridge multilevel inverter at different Modulation index
... switching modulation one is Space vector control and anther one is Selective Harmonic ...of modulation ,Sinusoidal pulse width modulation , Space vector pulse width modulation, ...
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A Review of Digital Modulation formats and OF...
... of modulation which is widely used for modulating data signals onto a carrier used for radio ...data modulation such as PSK, although many forms of data modulation operate alongside each ...Amplitude ...
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Distortion-Free 1-Bit PWM Coding for Digital Audio Signals
... sampled pulse width modulation (UPWM) represents a very efficient digital audio coding scheme for digital- to-analog conversion and full-digital amplification, it suffers from strong ...
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