Learning From Errors: Detecting Cross-Technology Interference in WiFi Networks

Ilenia Tinnirello, Daniele Croce, Nicola Inzerillo, Domenico Garlisi, Daniele Croce, Domenico Garlisi, Fabrizio Giuliano, Ilenia Tinnirello

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

In this paper, we show that inter-technology interference can be recognized using commodity WiFi devices by monitoring the statistics of receiver errors. Indeed, while for WiFi standard frames the error probability varies during the frame reception in different frame fields (PHY, MAC headers, and payloads) protected with heterogeneous coding, errors may appear randomly at any point during the time the demodulator is trying to receive an exogenous interfering signal. We thus detect and identify cross-technology interference on off-the-shelf WiFi cards by monitoring the sequence of receiver errors (bad PLCP, bad FCS, invalid headers, etc.) and propose two methods to recognize the source of interference based on artificial neural networks and hidden Markov chains. The result is quite impressive, reaching an average accuracy of over 95% in recognizing ZigBee, microwave, and LTE (in unlicensed spectrum) interference.
Original languageEnglish
Pages (from-to)347-356
Number of pages10
JournalIEEE Transactions on Cognitive Communications and Networking
Volume4
Publication statusPublished - 2018

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Computer Networks and Communications
  • Artificial Intelligence

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