indoor optical wireless channel
Differential Amplitude Pulse Position Modulation for Indoor Wireless Optical Communications
... well-approximated indoor 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 ...
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Genetic algorithm optimisation methods applied to the indoor optical wireless communications channel
... Over the preceding chapters it has been shown that the application of genetic algorithms to a few of the problems of indoor optical wireless communications may prove to be one of a possible number of ...
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Optical wireless channel characterisation in guided structures (vehicle applications)
... Optical Wireless Communications (OWC) have turned out to be more mainstream in current correspondence frameworks, with numerous applications in various ...Besides, optical links in both the infrared ...
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TO ENHANCE THE POWER RATIO OF OPTICAL WIRELESS CHANNEL USING DIFFUSED TECHNOLOGY
... for indoor opti-cal-wireless communication (OWC) system. Optical wireless communication represents an emerging and dynamic research and development area that has generated a vast number of ...
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PERFORMANCE ANALYSIS OF NONDIRECTED IR WIRELESS CHANNEL IN INDOOR ENVIRONMENT USING STATISTICAL DISTRIBUTION.
... Intensity modulation with direct detection (IM/DD) is the only feasible method of communication due to cost and complexity. [6]. The transmitted optical power of the source X(t) is directly varied by changing the ...
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Study of Wireless Optical CDMA LAN in Indoor Environment
... of Wireless CDMA has emerged before 16 ...same channel can be used for transmitting many ...required optical sources are likely to be mode-locked lasers producing transform limited pulses, rendering ...
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Digital pulse interval modulation for indoor optical wireless communication systems
... the channel dispersion length ...the channel frequency ...the channel contains a range of frequencies where the attenuation is very highs, the ZF-LE attempts to compensate for this by placing large ...
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A Review of Various Modulation Techniques for Indoor Optical Wireless Communication System
... in Optical wireless ...an optical pulse that occupies the entire or part of the bit duration while a bit zero is represented by the absence of an optical ...communication channel, the ...
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Design considerations of conventional angle diversity receivers for indoor optical wireless communications
... The next step involves selecting the FOV of the detecting elements. Doing so requires studying the pa- rameters that characterise the channel as a function of FOV and elevation angle. Figure 7a,b shows, ...
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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
... as channel equalization, channel modeling, error control code because of its capability of nonlinear processing, adaptability, and parallel ...for channel compensation and noise reduction can provide ...
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A genetic algorithm method for optical wireless channel control
... Abstract —A genetic algorithm controlled multispot transmitter is proposed as an alternative approach to optimising the power distribution for single element receivers in fully diffuse mobile indoor optical ...
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Training sequence based frequency domain channel estimation for indoor diffuse wireless optical communications
... for wireless optical communication (WOC) ...(FD) channel estimation approaches for diffuse wireless optical ...of optical modulation, this article establishes a link model for the ...
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Recent developments in indoor optical wireless systems
... Finally, a novel form of imaging receiver was presented in [45]. This consisted of a single photodetector, placed on a miniaturised positioning mechanism that allowed it to move under the focal plane of the imaging lens. ...
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Power Ratio Enhancement of an Optical Wireless Channels
... equation. Indoor OWC link is evident itself as the Inter- Symbol Interference (ISI) as they do not suffer from the effects of multipath fading but suffer from the effects of ...base-band channel impulse ...
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Multi user indoor optical wireless communication system channel control using a genetic algorithm
... several optical concentrators ...overcome channel induced distortion [10], whilst in [11, 12] a mod- ified genetic algorithm (GA), based on simulated annealing [13], was shown to produce highly optimised ...
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Active patch array design and indoor channel modeling for future wireless communications
... future wireless system for available bandwidth and high data ...complex indoor environment has created lots of multipaths to the communication systems, which further limits how much data rate can be ...
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Performance of Bit Error Rate and Q-Factor for OFDM-RoF System using QAM Modulation
... 835 shows, that if the distance increases, the MIN BER value also increases. The minimum bit error rate is achieved at the distance between 50km-75km,512 sub-carrier for 16- QAM. After applying various input frequencies ...
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Indoor robot path planning assisted by wireless network
... Indoor robot global path planning needs to complete the motion between the starting point and the target point according to robot position command transmitted by the wireless network. Behavior dynamics and ...
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Evaluation Of The Performance Of UWB MB-OFDM System Under Four Indoor Channel Models Of IEEE802.15.4a Under Noisy Channel Conditions
... four indoor channel models of IEEE ...designing channel models for PANs and BANs and propose techniques for improving the performance of MB-OFDM UWB transmitter/receiver will be ...
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Indoor robot localization combining feature clustering with wireless sensor network
... Recently, wireless sensors are used in mobile robot navigation as reference nodes; the methods can be divided into two categories [6–8]: One is to implement robot localization utilizing wireless sensor ...
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