Research Article
A Temporal Millimeter Wave Propagation Model for Tunnels Using Ray Frustum Techniques and FFT
Table 1
Comparison of computation times for the tunnel structure with different level of discretization.
| Number of mesh cells | Number of frustums | Block “A” | Block “B” (10,000 points) | Block “C” (1 point) 512 samples, IFFT |
| 1,068 | 138,550 | 14.59 (sec) | 47.03 (sec) | 0.47 (sec) | 3,452 | 346,900 | 39.14 (sec) | 137.63 (sec) | 0.47 (sec) | 5,674 | 490,241 | 72.90 (sec) | 175.78 (sec) | 0.485 (sec) | 9,068 | 824,330 | 146.95 (sec) | 211.59 (sec) | 0.53 (sec) |
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