Performance Evaluation of Carrier-Frequency Offset as a Radiometric Fingerprint in Time-Varying Channels
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View abstract on PubMed
Summary
This summary is machine-generated.Carrier frequency offset (CFO) effectively authenticates wireless devices in low-mobility settings. However, higher mobility significantly degrades CFO
Area Of Science
- Wireless communication security
- Physical layer authentication
- Signal processing
Background
- Physical layer attributes are increasingly used for wireless device authentication.
- Carrier frequency offset (CFO) shows promise for device identification in static environments.
- The performance of CFO in dynamic, high-mobility scenarios remains largely unexplored.
Purpose Of The Study
- To experimentally evaluate the accuracy of CFO for wireless device identification in time-varying channels.
- To assess the impact of vehicular mobility on CFO-based authentication effectiveness.
Main Methods
- Deployment of a software-defined radio (SDR) testbed for real-world data collection.
- Collection of CFO values in vehicular setups under varying mobility conditions.
- Training of machine learning (ML) classifiers using collected CFO data for device identification.
Main Results
- CFO achieved high accuracy (97%) for device identification in low-mobility scenarios.
- Accuracy degraded to 72% at higher mobility (35 miles/h).
- Time-varying channel conditions in high-mobility scenarios negatively impact pilot signal quality for CFO detection.
Conclusions
- CFO is a viable authentication feature for low-mobility wireless devices.
- High mobility significantly reduces the effectiveness of CFO for distinguishing transmitters.
- The study highlights limitations of CFO-based authentication in dynamic environments.
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