Radio propagation modeling methods and tools

Haneda, Katsuyuki; Rudd, Richard; Vitucci, Enrico M.; He, Danping; Kyösti, Pekka; Tufvesson, Fredrik; Salous, Sana; Miao, Yang; Joseph, Wout; Tanghe, Emmeric

doi:10.1016/b978-0-12-820581-5.00008-0

Cited by 12 publications

(12 citation statements)

References 48 publications

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“…Sometimes the concept of dense multipath [4] is also included in the model, in which one or more exponential functions in the time domain are also jointly considered. The modeling of these MPCs is typically done either with site-specific channel models (including ray models) where the complete wave trajectories are determined analytically, or alternatively the parameters of MPCs are treated stochasti-cally [5]. Stochastic modeling has enjoyed widespread attention, especially Geometry-based Stochastic Channel Models (GSCMs), because GSCMs can be generalized broadly and are of utility for many aspects of system design and verification.…”

Section: Introductionmentioning

confidence: 99%

“…Clusters of MPCs with similar propagation parameters (including delays, angles and Doppler frequencies) are distinguishable from other clusters with different propagation parameters because the objects that the electromagnetic waves interact with typically give rise to several paths simultaneously with similar geometries [9]. Understanding the nature of clusters continues to be an active area of research, with the Enhanced COST 2100 channel model setting a new state-of-the-art in sophistication [5] and reformulating the channel in terms of C clusters, each with L c MPCs. The channel has an overall path-loss G, and each cluster has its own visibility gain V c , shadow fading S c and cluster attenuation G c .…”

Section: Introductionmentioning

confidence: 99%

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Flexible Density-based Multipath Component Clustering Utilizing Ground Truth Pose

Whiton,

Chen,

Tufvesson

2023

2023 IEEE 98th Vehicular Technology Conference (VTC2023-Fall)

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Accurate statistical characterization of electromagnetic propagation is necessary for the design and deployment of radio systems. State-of-the-art channel models such as the Enhanced COST 2100 Channel Model utilize the concept of clusters of multipath components, and characterize channels by their inter-and intra-cluster statistics. Automatic clustering algorithms have been proposed in literature, but the subjective nature of the problem precludes any from being deemed objectively correct. In this paper, a new algorithm is proposed, based on density-reachability and ground truth receiver pose, with the explicit focus of extracting clusters for the purpose of channel characterization. Measurements of downlink signals from a commercial LTE base station by a passenger vehicle driving in an urban environment with a massive antenna array on the roof are used to evaluate the repeatability and intuitiveness of the proposed clustering algorithm.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Flexible Density-based Multipath Component Clustering Utilizing Ground Truth Pose

Whiton,

Chen,

Tufvesson

2023

2023 IEEE 98th Vehicular Technology Conference (VTC2023-Fall)

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“…Wireless propagation channels are commonly modeled by assuming that the emitted radio signal propagates to the receiver via several deterministic paths [1]- [3]. These deterministic paths are interpreted as specular components (SCs), i.e., dominant contributions of radio waves propagating from the transmitter (Tx) to the receiver (Rx), and arise, e.g., from reflection of a wave on a large smooth surface.…”

Section: Introductionmentioning

confidence: 99%

A Survey of Dense Multipath and Its Impact on Wireless Systems

Jiang¹,

Wang²,

Miao

et al. 2022

IEEE Open J. Antennas Propag.

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In recent years wireless propagation channel research has paid considerable attention to dense multipath, which is an indispensable part of propagation channels and may significantly contribute to the received power in variety of environments and frequency bands. Mathematical representation of dense multipath is different from that of specular components (SCs) due to its distinct propagation mechanism and impact on system performance. Therefore, accurate understanding and modeling of dense multipath together with SCs are important for parametric channel estimation and for reliable simulation in wireless applications. This paper first presents a systematic survey of studies of dense multipath in terms of different representations, channel modeling approaches and estimation methods. Thereafter, a comprehensive review of the characteristics and impact of dense multipath on performance of communication, localization and sensing systems is provided. Finally, open research topics are discussed.INDEX TERMS Channel estimation, channel modeling, characteristics, communication, dense multipath.

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“…With the support of advanced computer technology and hardware, computational electromagnetics [6], [7] has become an important branch of electromagnetism to solve electromagnetic problems, such as the approximate solutions to Maxwell's equations to calculate the antenna performance, electromagnetic compatibility, radar cross section and radio wave propagation. Computational electromagnetic methods can be categorized into the rigorous full-wave method such as the integral equation solvers (e.g., Method of Moments [8]), the differential equation solvers (e.g., Finite-difference time-domain [9], Finite Element Method [10], Finite Integration Technique [11]), as well as the high frequency approximation methods (e.g., Physical Optics (PO) [12], [13],…”

Section: Introductionmentioning

confidence: 99%

“…Among the high frequency approximation approaches, approximation in PO is made when determining the surface currents. [7], [17], [18] The geometry surface is divided into meshes that are much smaller compared to the wavelength and each mesh is considered as locally planar where reflection occurs according to GO. Instead of using Maxwell's equations that gives us the solution at any point in space, PO approach is used where it only gives solution in the lit region.…”

Section: Introductionmentioning

confidence: 99%

Simulation and Measurement Validation of a Finite-Length Cylindrical 3D UTD Model

Liu

Gong

Pollin

et al. 2022

IEEE Open J. Antennas Propag.

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In this paper we provide a modified 3D Uniform Theory of Diffraction (UTD) model for a finite-length cylinder, and validate the model by comparing to the simulation and the measured data. The presented finite-cylinder UTD model is adapted from the conventional infinite-cylinder model, and we additionally add edge diffraction occurring at the edge of the cap of the finite cylinder. The simulation reference is obtained from the CST simulation and the measurement reference is obtained from a vector network analyzer based channel sounder. From the numerical examples and analysis, it is shown that the modified model agrees well with the references and is more accurate than the conventional unmodified model. This study proves the importance of the edge diffraction field for finite-cylinder UTD solutions specially when 1) the transmitter and receiver are at different heights relative to the cylinder, and 2) one is below and the other is above the height of the cylinder.

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Radio propagation modeling methods and tools

Cited by 12 publications

References 48 publications

Flexible Density-based Multipath Component Clustering Utilizing Ground Truth Pose

Flexible Density-based Multipath Component Clustering Utilizing Ground Truth Pose

A Survey of Dense Multipath and Its Impact on Wireless Systems

Simulation and Measurement Validation of a Finite-Length Cylindrical 3D UTD Model

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