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Avoid generating entire heatmaps #8

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opened 2024-12-29 19:13:13 +02:00 by cfalas · 1 comment
cfalas commented 2024-12-29 19:13:13 +02:00
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Both papers using the AoA-ToF heatmaps generate the heatmap for the entire space, which is quite computationally expensive (each pixel of the heatmap requiring a series of 4 matrix multiplications, with dimensions proportional to both the number of subcarriers and the number of antennas.

Instead of doing this for all pixels of the heatmap, we can dynamically increase/decrease the resolution near peaks (which is where all useful information is)

Both papers using the AoA-ToF heatmaps generate the heatmap for the entire space, which is quite computationally expensive (each pixel of the heatmap requiring a series of 4 matrix multiplications, with dimensions proportional to both the number of subcarriers and the number of antennas. Instead of doing this for all pixels of the heatmap, we can dynamically increase/decrease the resolution near peaks (which is where all useful information is)
cfalas commented 2024-12-29 21:20:46 +02:00
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A simpler thing to try first: Store the steering vectors for each pixel (although I expect that the time needed to generate the steering vectors is negligible in compariston to the matrix multiplication)

A simpler thing to try first: Store the steering vectors for each pixel (although I expect that the time needed to generate the steering vectors is negligible in compariston to the matrix multiplication)
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