PinPoint: Localizing Interfering Radios
summary
PinPoint localizes uncooperative interfering radios by extracting CSSI feature vectors and a novel line-of-sight AoA estimator from four-antenna WARP software radios layered on existing 802.11 APs, then solves an optimization to pick a location and interference type. Implementation on a departmental floor yields median error 0.97 meters, outperforms RSSI and MUSIC baselines by ~3×, requires little calibration, self-initializes AP bearings, and averages roughly 100 packets per estimate.
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chapters (21)
- 0:00Intro
- 1:09Previous localization approaches
- 1:36Localizing interference
- 2:23PinPoint overview
- 2:51PinPoint implementation
- 3:21Applications
- 4:18Design Flow
- 4:50Repeating Patterns
- 5:58Feature Vectors
- 7:40Additional Data Points
- 9:17Representation
- 9:42Multipath
- 10:12Nonline of sight
- 11:26Delay spreads
- 12:15Hypothesis testing
- 12:32Residual component
- 14:16Results
- 14:46Experiment
- 15:07Comparison
- 17:04CDF
- 18:18Summary
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