wifi-signal-prediction/docs/slides/03_results.md

Results and Achievements

Signal Characteristics

1. Signal Properties

• Operating Frequency: 2.4 GHz
• Transmit Power: 20 dBm
• Noise Floor: -96.0 dBm
• Signal Quality Range: 0-1 (normalized from RSSI)

2. Material Attenuation (2.4 GHz)

• Concrete (20cm): 4.5 εr, 0.014 S/m conductivity
• Glass (6mm): 6.0 εr, 0.004 S/m conductivity
• Wood (4cm): 2.1 εr, 0.002 S/m conductivity
• Drywall (16mm): 2.0 εr, 0.001 S/m conductivity
• Metal (2mm): 1.0 εr, 1e7 S/m conductivity

3. System Performance

• Grid Resolution: 0.1m (10cm)
• Sampling Points: 200x120 grid (24,000 points)
• Coverage Area: 50m x 30m (1,500 m²)
• Signal Range: Typically -30 dBm to -90 dBm

4. Visualization Improvements

• AP Marker Size: 3000-4000 units
• High-Resolution Output: 600 DPI
• Material Overlay: 0.5 alpha transparency
• Support for Multiple APs (up to 4)
  • Channel Separation: 5 channels
  • Realistic Noise: σ = 2 dB