Modeling of nondirected wireless infrared channels

Carruthers, Jeffrey B.; Kahn, Joseph M.

doi:10.1109/26.634690

Cited by 272 publications

(93 citation statements)

References 8 publications

(2 reference statements)

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“…Furthermore, there are also some other VLC channel models in the literature. The classic ceiling-bounce model developed by Carruthers and Kahn [41] for indoor infrared systems was introduced into VLC systems by Rajbhandari et al [39]. Owing to its simplicity and excellent matching with the measured data, the ceiling-bounce model is the most popular one in simulations [8].…”

Section: Vlc Linksmentioning

confidence: 99%

Optimization of Visible-Light Optical Wireless Systems: Network-Centric Versus User-Centric Designs

Zhang

Hanzo

2018

IEEE Commun. Surv. Tutorials

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Abstract-In order to counteract the explosive escalation of wireless tele-traffic, the communication spectrum has been gradually expanded from the conventional radio frequency (RF) band to the optical wireless (OW) domain. By integrating the classic RF band relying on diverse radio techniques and optical bands, the next-generation heterogeneous networks (HetNets) are expected to offer a potential solution for supporting the ever-increasing wireless tele-traffic. Owing to its abundant unlicensed spectral resources, visible light communications (VLC) combined with advanced illumination constitute a competent candidate for complementing the existing RF networks. Although the advantages of VLC are multi-fold, some challenges arise when incorporating VLC into the classic RF HetNet environments, which may require new system architectures. The user-centric (UC) design principle for VLC environments constitutes a novel and competitive design paradigm for the super dense multi-tier cell combinations of HetNets. The UC concept may be expected to become one of the disruptive techniques to be used in the forthcoming fifthgeneration era. This paper provides a comprehensive survey of visible-light-aided OW systems with special emphasis on the design and optimization of VLC networks, where the radically new UC design philosophy is reviewed. Finally, design guidelines are provided for VLC systems.

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Section: Vlc Linksmentioning

confidence: 99%

Optimization of Visible-Light Optical Wireless Systems: Network-Centric Versus User-Centric Designs

Zhang

Hanzo

2018

IEEE Commun. Surv. Tutorials

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“…The features of a room, for example, walls, ceiling, and office materials, can be approximated as an ideal Lambertian reflector. The Nondirected optical wireless link (the most practical link) has been investigated and simulated in [2], [3]. Normally, an optical wireless system adopts an intensity modulation and direct detection technique (IM/DD) because of its simple implementation.…”

Section: In Building Infrared Ir Wireless Channelmentioning

confidence: 99%

“…where  denotes convolution, R is the photo detector responsively (in A/W), and h (t) is the channel impulse ambient light, can be modeled as white Gaussian Noise, it cannot be negative and must satisfy eye safety regulations and is given by the relation as in [2]. optical system with a large square-law detector operates on a short wavelength which can mitigate the multipath fading.…”

Section: In Building Infrared Ir Wireless Channelmentioning

confidence: 99%

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Analysis of Location Variability for Wireless Infrared Channel in Inbuilding Environment

Patil¹,

Shah²

2014

JACN

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Abstract-Nowadays, the short range infrared wireless communication has become the most popular technique in In building communication. This paper has been described the modeling of wireless infrared channel by using time domain approach. Impulse response is the most imperative and critical parameter in IR wireless channel modeling. The Non-directed, Non-LOS IR (Diffuse) link configuration is taken into account for the simulation study. Our major attention is to obtain the received signal strength by moving the receiver at different locations in the entire rectangular room and suggest the specific area giving the maximum strength of the received signal. In order to perform this task of receiver location variability, the simulation analysis is carried out with the help of the three dimensional (3-D) plot.

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“…For a nondirected IR channel employing IM/DD, a source S i , which emits an instantaneous optical power X i (t), will produce a instantaneous photocurrent Y ij (t) at receiver R j with photodiode responsivity r j , in the presence of an additive, white Gaussian shot noise N j (t), and can be modelled as the linear baseband system, given by [24] …”

Section: The Channel Modelmentioning

confidence: 99%

Receiver alignment dependence of a GA controlled optical wireless transmitter

Higgins¹,

Green²,

Leeson³

2009

J. Opt. A: Pure Appl. Opt.

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Abstract. A genetic algorithm controlled multispot transmitter is demonstrated to be capable of optimising the received power distribution for single element receivers in fully diffuse mobile indoor optical wireless systems. By dynamically modifying the intensity of individual diffusion spots, the transmitter is capable of compensating for changes in receiver alignment, user movement and surface reflectivity characteristics, with negligible impact to bandwidth and RMS delay spread. The dynamic range, referenced against the peak received power, can be reduced by up to 27% when the room is empty, and up to 26% with user movement and variable receiver alignment. Furthermore, received power perturbation, induced by user movement, is reduced from 10% to 2.5%. This method shows potential for providing a highly adaptable solution of overcoming channel variability whilst also reducing receiver complexity.

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Modeling of nondirected wireless infrared channels

Cited by 272 publications

References 8 publications

Optimization of Visible-Light Optical Wireless Systems: Network-Centric Versus User-Centric Designs

Optimization of Visible-Light Optical Wireless Systems: Network-Centric Versus User-Centric Designs

Analysis of Location Variability for Wireless Infrared Channel in Inbuilding Environment

Receiver alignment dependence of a GA controlled optical wireless transmitter

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