RadioMap_Dataset_Reflection/Scattering_Counts

Dataset Overview

This dataset was produced by ray‑tracing (RT) simulations using the open‑source TensorFlow library Sionna. The simulation environment is based on various urban regions in China, focusing on a square area with a side length of 620 m. Transmitters (TXs) are uniformly distributed at a height of 1.5 m, and ground‑level receivers (RXs) are fixed at 1.5 m.

Simulation Parameters

• Frequency: 2.5 GHz
• Transmit Power: 23 dBm
• Transmit Height: 1.5 m
• Transmit Antenna Array: 8×4 elements, vertical and horizontal spacing 0.06 m (half‑wavelength), isotropic radiation pattern, dual‑polarized
• Receive Height: 1.5 m
• Receive Antenna Array: Single element, isotropic radiation pattern, cross‑polarized

Data Files

Scene_File

Contains 500 scene folders created and exported with Blender 3.6.

RadioMap_raw

Raw simulation output files generated by Sionna. Filenames range from 1_10.npy to 500_10.npy, indicating the scene number. Each file has a shape of 256×256×10×6, corresponding to (Rx_coordinates(i), Rx_coordinates(j), Tx_number, depth_max). Values represent RSSI. depth_max denotes the total number of reflections and scatterings; a depth_max of 0 indicates a scene without reflections or scatterings.

RSSI

Grayscale images derived from the RadioMap_raw files. Each point’s value is scaled to the range [0, 1] using the formula max{ (P_R - P_R,thr) / (P_R,max - P_R,thr) , 0 }, where P_R,max is the maximum received signal strength (‑13 dB) and P_R,thr is set to ‑70 dB. For example, 1_0_0.png represents the RadioMap for scene 1, TX 0, with depth_max = 0.

Tx

Grayscale images showing TX locations for each scene; pixel value 255 marks the TX position, all other values are 0. For instance, 1_0.png depicts the TX‑0 location in scene 1.

Scene

Grayscale images of the scenes obtained by a horizontal slice at 1.5 m through the 3D simulated environment. Pixel value 0 indicates building structures; all other values are 0.

Examples

Scene Images

RadioMap Images

In the examples, RSSI 1_0_0 denotes a scenario with no reflections or scatterings, RSSI 1_0_1 indicates a single reflection/scattering event, and so on.

Future Updates

Datasets with additional TX data for each scene are in preparation and will be released soon.