DOI: 10.5281/zenodo.17233725
title: Ray-tracing  simulation dataset in modelled real lecture hall at THz frequencies (304.3 GHz)

description: Introduction

This data set contains two collections of simulation measurement in modelled real Lecture hall at THz frequencies [1] (304.3 GHz; 8GHz bandwith). The main objective was to develop and evaluate different algorithms for wireless sensing and localization and for comparison with the real measurements when they will be available. We used High-Performance Ray-Tracing Simulation Platform [2].  

 

The measurements include data created on two different sets:



Empty Lecture room (1 snapshot)

Object representing the body moving through the line of sight in the same room (32 snapshots) 


Lecture room with rays is depicted in "lecture_room_empty.png" and "lecture_room_object_at_00_position.jpg"

Simulation setup

Lecture room is represented as classical lecture hall with wooden benches, dimensions 14m x 16m. It is modelled with SketchUp program presented in .json format. The representation of the moving person is done using the metal 16-sided prism (diameter: 0.5 m, height: 2 m). 

 

Antenna type: Omnidirectional, Vertical polarization

Transmitter position [m]: "x": 1.37 , "y": 6.05 , "z": 1.5

Receiver position [m]: "x": 2.9 , "y": 11.07 , "z": 1.5

Transmission Power: 0 dBm

 

Frequency range: from 300.2 GHz to 308.2 GHz;  step: 0.16 GHz (51 measurements)

 

Number of rays/measurements: 3650 per frequency (51) = 186150



Results:



CIR (Channel Impulse Response)

CTF (Chanel Transfer Function)

Delay

AoA (Angle of Arrival)

AoD (Angle of Departure)

PowerRays



Dataset structure folders

EmptyRoom



lectureroom.json (model of the room in SketchUp format JSON file)

CIR.csv  (51 complex numbers e.g. 1.9362e-05+4.2949e-05i)

CIR_dB.csv (51 numbers)

CTF.csv (51 complex numbers e.g. 1.9362e-05+4.2949e-05i)

CTF_dB.csv (51 numbers)

DelayAbs.csv (absolute delay from transmitter to receiver (distance 5.2480m) for all 3650 rays)

DelayRel.csv (relative delay from transmitter to receiver for all 3650 rays)

PowerrRays.csv (complex power of each ray at receiver)  (for all 3650 rays)

Angle.csv (AoA_phi,  AoA_theta,  AoD_phi, AoD_theta) (for all 3650 rays)


MovingObject

The same structure of results as in the 'Empty Room'. 

The results are structured in 32 directories (e.g. lectureroom+11_result) representing 32 different position of moving object. 

The middle position is at line of sight between transmitter and receiver (i.e. lectureroom+00_result). 

The number of rays is up to 3650, as some are blocked by the 16-sided prism.

 

Movement of 16-sided prism (32 equidistant snapshots):

Start “x”: 2.135 , “y”: 8.06 , “z”: 0 

Stop  “x”: 2.135 , “y”: 16.06 , “z”: 0 

 

Scene files: (model of the room in SketchUp format JSON file):

(lectureroom-16.json ... lectureroom+00.json ... lectureroom+15.json)

 

'lectureroom+00.json' presents the central point between transmitter and receiver (i.e. blocking line of sight).

References:

[1] R. Pan et al. "Terahertz Channel Modeling Based on Scattering Characterization," 2024 18th European Conference on Antennas and Propagation (EuCAP), Glasgow, United Kingdom, 2024, pp. 1-5, doi: 10.23919/EuCAP60739.2024.10501220.

 

[2] D. He, et. al. "The Design and  Applications of High-Performance Ray-Tracing Simulation Platform for 5G  and Beyond Wireless Communications: A Tutorial," in IEEE Communications Surveys & Tutorials, vol. 21, no. 1, pp. 10-27, Firstquarter 2019, doi: 10.1109/COMST.2018.2865724.

Notes: 

This research was funded by Slovenian Research And Innovation Agency (ARIS) grant numbers J2-4461, P2-0016.