Announcing Sionna v0.19

[jhoydis]

Ray Tracing

• New notebook: Tutorial on Coverage Maps.
  It computes coverage maps for different precoding vectors, visualizes metrics like path gain, received signal strength (RSS), and signal-to-interference-plus-noise ratio (SINR), estimates user-to-transmitter associations, and samples user positions for the generation of channel impulse responses

• Scene extended with bandwidth and temperature properties

• Transmitter extended with a transmit power property in Watt and dBm

• CoverageMap extended to compute SINR maps and RSS maps, in addition to the already existing path gain maps

• CoverageMap extended to compute and visualize cell-to-transmitter association

• CoverageMap extended to compute and visualize the CDF of path gain, RSS, or SINR

• show() property of CoverageMap extended to visualize SINR and RSS maps in addition to the existing path gain
  maps

• Adds feature to Scene.coverage_map to execute multiple runs of shoot-and-bounce to compute coverage maps. This allows computing coverage maps using large number of rays despite memory limitation

• Breaking Change: CoverageMap.as_tensor() replaced by path_gain, rss, and sinr properties

Config

• Pseudo-random generators can be configured from the config module to ensure reproducible results, for Python, Numpy and TensorFlow

• New config.seed property to configure all Python, Numpy and TensorFlow pseudo-random generator seeds at once

OFDM

• Adds feature to prepend cyclic prefixes to OFDM symbols of different lengths (see OFDMModulator and the related PR #465)

Precoding

• Adds feature to produce Discrete Fourier Transform (DFT) grid of beams for uniform linear and rectangular MIMO antenna arrays

Fixes

• Addresses the significant increase in memory footprint for path and coverage map computations introduced in version 0.18

• Fixes the skewness of the UTs position distribution toward the center of the sector generated via drop_uts_in_sector, ensuring a uniform distribution across the sector

• Fixes ray leakage in coverage map computation (Ray Leakage in Indoor Scenarios with Sionna RT #564)

• Fixes the application of precoding vector in coverage map computation in the presence of multiple transmitters

• Fixes object IDs issues in ray tracer: Scene objects now always have contiguous indices starting from 0

• Fixes missing scenes in Docker (Sionna 0.18 Docker - Scenes not found in build package  #597)

[qiangdadi]

Great Job