Simulation of impulse response for indoor visible light communications using 3D CAD models

Rodriguez, Stephen; Jiménez, Rafael Pérez; Mendoza, Beatriz Rodríguez; Hernández, Francisco J. López; Alfonso, Alejandro José Ayala

doi:10.1186/1687-1499-2013-7

Cited by 41 publications

(33 citation statements)

References 14 publications

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“…In another work, the development of customizable transceivers using STM32F4DISCOVERY board provided high-speed audio communication, but serious drawbacks were observed in using the STMicroelectronics (STM) board such as the configuration of transmission before the commencement of communication. 17 The purpose of the simulations was to measure the impulse response of the LoS and NLoS channels with transmitting any useful data. 9,10 For software implementation, the performance of VLC system was investigated through different equalization techniques for non-line-of-sight (NLoS) channel using MATLAB.…”

Section: Prior Workmentioning

confidence: 99%

Design of NS3 VLC module and performance analysis of ad hoc network under VLC and Wi‐Fi layers

Sheikh

Ali

Asif

et al. 2018

Int J Communication

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Visible light communication (VLC) is the branch of optical wireless communi-cations that uses light-emitting diodes for the dual purpose of illumination and very-high-speed data communication. The main motivation behind the current work is finding alternatives to the saturated radio frequency spectrum, radio frequency security issue, and vulnerability to interferences. The current work is aimed at developing a module for the physical layer of a VLC-based ad hoc network in network simulation 3. The VLC physical layer module is developed by using the optical signal modules available in the network simulator.The work also includes modelling of VLC-based transmitter, wireless optical channel, and the optical receiver. Furthermore, the implementation and evaluation of the VLC-based physical layer is carried out over a typical ad hoc network under different performance metrics. The designed ad hoc network is also tested under Wi-Fi module followed by its comparison with corresponding ad hoc network under VLC module. The comparison is based on bit error rate curves, system throughput, and gain in received signal-to-noise ratio mainly.Finally, the suitability of different modulation schemes is also investigated in the current work for both Wi-Fi-and VLC-based ad hoc networks. KEYWORDS ad hoc networks, bit error rate (BER), Li-Fi, modulation SCHEMES, network simulator, NS3, OOK, PAM, PHY layer, throughput, visible light communication (VLC), VPPM, 5G mobile communication | INTRODUCTIONIn the past decade, there has been a drastic increase in the demand for high-speed data communication services (cellular networks, smart TVs, cloud-based computing, high-definition video calling, and live streaming). The existing radio frequency (RF) wireless technologies have been the forefront of telecommunication, revolutionizing the voice and data communication. 1 However, because of saturation of RF spectrum, security issues, vulnerability to interferences, and hazards of RF, low-cost and reliable technologies are required to provide efficient data communication. The discovery and growing use of light-emitting diodes (LEDs) have boosted the research in visible light communication (VLC) technology. 2 Visible light communication is becoming an emerging green technology aimed to providing high data rates for short-range communication and easy deployment in hospitals, planes, and areas where traditional RF systems are less preferred. 3 The VLC salient features include license and interference-free spectrum (430THz-790THz), extremely large bandwidth, inherent security, compatibility with existing technologies, and high efficiency for positioning purposes due to its line-of-sight (LoS) feature. 4

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Section: Prior Workmentioning

confidence: 99%

Design of NS3 VLC module and performance analysis of ad hoc network under VLC and Wi‐Fi layers

Sheikh

Ali

Asif

et al. 2018

Int J Communication

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“…For a given scenario, the received optical power is a function of time that depends on the room geometry and reflecting properties of the surfaces. In this way, the impulse response of indoor wireless optical channels can be expressed as

h false(t false) = h^{false(0 false)} false(t false) + true \sum_{k = 1}^{\infty} h^{false(k false)} false(t false),

where h (0) ( t ) denotes the impulse response for LOS component, whereas h ( k ) ( t ) is the impulse response contribution due to light undergoing k reflections (NLOS). We remark that Equation represents the channel response for the full spectrum range for visible light, ignoring all wavelength‐dependent phenomena.…”

Section: Matrix‐mmc For Indoor Optical Channelsmentioning

confidence: 99%

“…Many previous VLC channel modeling works, adapted from infrared (IR) channel models, have been reported in the literature . There exist, however, significant differences between VLC and IR communications that should be taken into account on channel modeling.…”

Section: Introductionmentioning

confidence: 99%

A generalized multi‐wavelength propagation model for VLC indoor channels using Monte Carlo simulation

Ramírez-Aguilera

Luna-Rivera

Guerra

et al. 2018

Trans Emerging Tel Tech

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In this paper, we introduce the Matrix‐MMC propagation model for indoor wireless optical channels. This proposed method is evolved from the modified Monte Carlo (MMC)–based ray tracing algorithm, but in addition to the properties of MMC, it has the capability of capturing reflection phenomena implying changes on wavelength (eg, fluorescence, phosphorescence, or iridescence) with a simplified analytical expression. The model provides unprecedented information about the mechanism of surface reflection in a visible light communication channel, which influences the propagation of the light waves, that depends on wavelength.

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“…The propagation model is composed by the simulation algorithm and mathematical models used to describe the features of the elements of the optical link. To evaluate the impulse response of the VLC channel, a Monte Carlo ray-tracing algorithm has been employed [4,5]. In general, the multi-wavelength impulse response for an arbitrary position of emitter E and receiver R can be expressed as an infinite sum of the form:…”

Section: Propagation Modelmentioning

confidence: 99%

Multi-user THSS system for visible light links

Rodriguez

Mendoza

González

et al. 2013

2013 12th Workshop on Information Optics (WIO)

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In this paper, a system based on time-hopping spread spectrum techniques for indoor visible light communications is studied via simulation. A 2-PPM modulation scheme is selected because it yields good results in wireless optical communications. Furthermore, the system allows for selecting the number of pulses per symbol to be transmitted and makes use of an optimum maximum-likelihood receiver for AWGN channels with the ability to choose between hard-or soft-decision decoding. The system designed allows for comparing the performance based on the computation of the bit error rate as a function of the pulse energy to noise power spectral density ratio, for different configurations in single-user and multi-user environments.

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Simulation of impulse response for indoor visible light communications using 3D CAD models

Cited by 41 publications

References 14 publications

Design of NS3 VLC module and performance analysis of ad hoc network under VLC and Wi‐Fi layers

Design of NS3 VLC module and performance analysis of ad hoc network under VLC and Wi‐Fi layers

A generalized multi‐wavelength propagation model for VLC indoor channels using Monte Carlo simulation

Multi-user THSS system for visible light links

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