Journal ArticleDOI
A ray-tracing method for modeling indoor wave propagation and penetration
TLDR
In this paper, a ray-tracing method for wave propagation inside buildings is presented, where the cross sections of the ray tubes at the field points are evaluated to find the spreading factors of the waves and then the geometrical optics contributions at the locations of the receiving antenna.Abstract:
A ray-tracing method for waves inside buildings is presented. Ray tubes are used to model the wave propagation and penetration and all the significantly reflected and transmitted ray tubes from interfaces are included. Also, the cross sections of the ray tubes at the field points are evaluated to find the spreading factors of the waves and then the geometrical optics (GO) contributions at the locations of the receiving antenna. A program has been developed according to this ray-tracing technique that can be applied to simulate waves transmitted through and reflected from electrically large complex 2D and 3D bodies. To verify this ray-tracing program, 2D moment method (MM) solutions for wave propagating in a two-room structure and also through a stair-shaped wall above a lossy ground are used to compare with those obtained from the ray tracing. Besides, comparisons of field measurements and ray-tracing simulations at 900 and 1800 MHz performed in a corridor on different floors and inside a staircase are shown. The effective complex dielectric constants of the buildings determined from a free-space method are employed in the simulations and a vector network analyzer is used for the field measurements. Good agreements are obtained. In addition, measured results for waves penetrating an exterior wall with metal-framed windows at 1290 MHz are employed to test the ray-tracing solutions, which indicate that scattering from the metal frames may be significant for field points near the windows. This ray-tracing program can be applied to evaluate the channel characteristics for the indoor wireless communications.read more
Citations
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Journal ArticleDOI
A survey of various propagation models for mobile communication
TL;DR: An impulse-response characterization for the propagation path is presented, including models for small-scale fading, and it is shown that when two-way communication ports can be defined for a mobile system, it is possible to use reciprocity to focus the energy along the direction of an intended user without any explicit knowledge of the electromagnetic environment in which the system is operating.
Journal ArticleDOI
Propagation prediction models for wireless communication systems
Magdy F. Iskander,Zhengqing Yun +1 more
TL;DR: A comprehensive review of the propagation prediction models for terrestrial wireless communication systems is presented and the focus is placed on the application of ray-tracing techniques to the development of deterministic propagation models.
Journal ArticleDOI
Radio Over Fiber for Picocellular Network Architectures
TL;DR: In this article, a transponder design that can meet system requirements in terms of sensitivity ( 95 dBldrHz2/3) for a dual-band wireless LAN (WLAN) fiber-radio picocellular network was developed.
Proceedings ArticleDOI
ARIADNE: a dynamic indoor signal map construction and localization system
TL;DR: This paper proposes a novel and automated location determination method called ARIADNE, using a two dimensional construction floor plan and only a single actual signal strength measurement, which generates an estimated signal strength map comparable to those generated manually by actual measurements.
Journal ArticleDOI
The Design and Applications of High-Performance Ray-Tracing Simulation Platform for 5G and Beyond Wireless Communications: A Tutorial
TL;DR: This tutorial will be especially useful for researchers who work on RT algorithms development and channel modeling to meet the evaluation requirements of 5G and beyond technologies.
References
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Antenna theory and design
TL;DR: The CEM for Antennas: Finite Difference Time Domain Method (FDTDM) as mentioned in this paper is a CEM-based method for measuring the time domain of an antenna.
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Wireless Information Networks
Kaveh Pahlavan,Allen H. Levesque +1 more
TL;DR: In this paper, the authors present an overview of the evolution of radio propagation in wireless networks, and present a survey of the current state-of-the-art in this area.
Journal ArticleDOI
Site-specific propagation prediction for wireless in-building personal communication system design
TL;DR: Time delay comparison shows that the amplitudes of many significant multipath components are accurately predicted by this model, and the effective building material properties are derived for two dissimilar buildings based upon comparison of measured and predicted power delay profiles.
Journal ArticleDOI
UHF propagation prediction for wireless personal communications
TL;DR: The paper starts by reviewing the characteristic signal variations observed in CMR systems employing high base station antennas to cover macrocells having radius out to 20 km, and discusses advances in site specific prediction for outdoor and indoor propagation.
Journal ArticleDOI
Propagation mechanisms in microcell and indoor environments
U. Dersch,E. Zollinger +1 more
TL;DR: In this paper, the theoretical principles of the elementary process of scattering from a 2D surface, such as a wall, are described and a ray-tracing algorithm based on this is employed to describe propagation in 3D structures, like rectangular rooms or street canyons.