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Published byMuriel Clarke Modified over 9 years ago
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PARADIS: Wireless Device Identification with Radiometric Signatures
Vladimir Brik, Suman Banerjee, Marco Gruteser, Sangho Oh Present by Taodun Li
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Problem Statement Device identity management is important for network security MAC address in a frame is easy to forge Solution for wired network cannot be adopted
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Previous Solution WLAN administrators rely on various cryptographic mechanisms for wireless device identity management and access control
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No two NICs are identical
Solution in This Paper No two NICs are identical Radiometric identity can be observed in its radio transmissions and be used to discern different NICs
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PARADIS Schematic
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Overview of Modulation Mechanisms
The 4 symbols of QPSK on I/Q plane Modulation errors
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Modulation Error Metrics
EVM is not used by PARADIS Normalize data before applying a classification algorithm
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Get Signature PARADIS-KNN - Outlier:
- Discards outliers one by one until only half of the training signatures remain PARADIS-SVM - Calculate a special matrix WA - WA ∙S-b >0 if S is from a frame sent by A - WA ∙S-b <0 Otherwise
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Identification For both KNN and SVM:
Return the identity that appears most frequently among the computed best matches In case of a tie, the identity with the greatest cumulative similarity is chosen
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Comparison of PARADIS and other studies
Evaluation Comparison of PARADIS and other studies
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Performance of PARADIS-SVM
Evaluation Performance of PARADIS-SVM
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Performance of PARADIS-KNN
Evaluation Performance of PARADIS-KNN
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Conclusion PARADIS outperforms the other state-of-art techniques.
PARADIS is capable of achieving accuracy in excess of 99% PARADIS is resilient to mobility, varying noise and hardware aging
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Thank you!
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