Ray Tracing
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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
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Transmitter extended with a transmit power property in Watt and dBm
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CoverageMap extended to compute SINR maps and RSS maps, in addition to the already existing path gain maps
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CoverageMap extended to compute and visualize cell-to-transmitter association
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CoverageMap extended to compute and visualize the CDF of path gain, RSS, or SINR
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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
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Breaking Change:
CoverageMap.as_tensor()replaced by path_gain, rss, and sinr properties
Config
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Pseudo-random generators can be configured from the config module to ensure reproducible results, for Python, Numpy and TensorFlow
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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
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Addresses the significant increase in memory footprint for path and coverage map computations introduced in version 0.18
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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
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Fixes ray leakage in coverage map computation (#564)
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Fixes the application of precoding vector in coverage map computation in the presence of multiple transmitters
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Fixes object IDs issues in ray tracer: Scene objects now always have contiguous indices starting from 0
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Fixes missing scenes in Docker (#597)