optical pulse position modulation
Adaptive differential amplitude pulse position modulation technique for optical wireless communication channels based on fuzzy logic
... Indoor optical wireless communication is also called wireless infrared communication, whereas outdoor optical wireless communication is commonly known as free space optical (FSO) communication ...
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Adaptive differential amplitude pulse position modulation technique (DAPPM) using fuzzy logic for optical wireless communication channels
... narrow optical beam, making possible the use of narrower field-of-view (FOV) receivers, and an improved link ...given optical power, independently of the reflective properties or the shape of the room, as ...
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Differential Amplitude Pulse Position Modulation for Indoor Wireless Optical Communications
... free-space optical link with the e ff ects of multipath dispersion was presented in ...average optical transmitter power level is constrained by concerns about power consumption and eye ...cient ...
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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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Hybrid pulse interval modulation code division multiple access for optical wireless communications
... In optical systems operating in the positive region only, the bit ‘1’ of the spreading sequence is modulated with a positive square pulse, whereas the bit ‘0’ is modulated with an empty chip, both are at ...
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Performance of the Wavelet Transform-Neural Network Based Receiver for DPIM in Diffuse Indoor Optical Wireless Links in Presence of Artificial Light Interference
... average optical power requirement and having DC and low frequency ...the pulse position modulation (PPM) offering the best performance but is susceptible to the multipath induced ISI in NLOS ...
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Digital pulse interval modulation for optical communication systems
... available optical-fibre bandwidth. In this context pulse transmission techniques have drawn a considerable attention among many researchers ...world-wide. Pulse transmission techniques, such as ...
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FSO Cooperative System Analysis for DF based Relay
... binary pulse position modulation, and direct detection, where optical links are characterized by Log-normal distributed irradiance and path ...simple modulation technique such as on-off ...
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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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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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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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Analysis of Offset Pulse Position Modulation
... information is transmitted over the optical link on a bit-by-bit basis (binary encoding) or on a data word basis (block encoding). Two fundamental types of coding generally are used to improve system performance: ...
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Spectral characterisation of nk pulse position modulation format
... n pulse position modulation (PPM) is a new modulation format that has recently been proposed for the optical wireless channel. This Letter considers, for the first time, a full spectral ...
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An Investigation of an Optical Multiple Pulse Position Modulation Link over a Dispersive Optical Channel
... an optical PPM system and from this a simple sub-optimum receiver was proposed which offered significant SNR improvement and yet required few circuit ...an optical PPM system over a slightly dispersive ...
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Pulse position modulation coding schemes for optical intersatellite links
... According to Sibley (2004, December), digital PPM is the preferred coding scheme for use in optical inter-satellite links. This is because it operates with very low average power and offers high sensitivity. ...
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Digital Modulation Techniques for Performance Exploration of Optical Wireless Channels
... many modulation techniques which are used for optical wireless ...Keying Modulation ( M O.O.K ) and Pulse position modulation ( M ...in optical wireless communication. In ...
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Pulse Interval Modulation for Ultra-High Speed IR-UWB Communications Systems
... the Pulse Interval Modulation (PIM) scheme for impulse radio ultra-wideband (IR-UWB) communication ...strict optical orthogonal codes (SOOC) is ...in Pulse Position Modulation ...
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Performance Analysis of Optical Spatial Modulation in Atmospheric Turbulence Channel
... spatial pulse position modulation (SPPM) is used as a case study to investigate the performance of the optical spatial modulation (SM) technique in outdoor atmospheric turbulence ...
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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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Implementation of Shortened Pulse Position Modulation for Optical Communication Systems
... use optical code division multiple-access (OCDMA) technique ...uses Pulse Interval Modulation technique was designed to demonstrate its appropriate for underwater ...
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