DeWOZ: Rethinking the schmidl-cox algorithm for detecting Wi-Fi out of ZigBee interference

Chenglong Shao, Hoorin Park, Wonjun Lee

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


This letter presents detect Wi-Fi signals out of ZigBee (DeWOZ), a clean-slate technique to discern Wi-Fi packets drowning in ZigBee interference. Unlike existing solutions that are restricted to the cases where Wi-Fi signal strength is much higher than ZigBee, Wi-Fi signals only interfere with ZigBee payload, or beforehand clear Wi-Fi transmissions are done to obtain transmitter-specific information, DeWOZ aims at achieving the detection of relatively weak Wi-Fi signal hidden in both ZigBee header and payload portions only based on a single corrupted signal. DeWOZ re-explores the Wi-Fi-oriented Schmidl-Cox algorithm for corrupted signal synchronization followed by two key operations, autocorrelation anomaly detection and adaptive discrete Fourier transform, to sniff Wi-Fi out of ZigBee header and payload, respectively. The feasibility of DeWOZ is validated via practical experiment.

Original languageEnglish
Article number8465960
Pages (from-to)289-292
Number of pages4
JournalIEEE Wireless Communications Letters
Issue number1
Publication statusPublished - 2019 Feb

Bibliographical note

Publisher Copyright:
© 2012 IEEE.


  • Schmidl-Cox
  • Wi-Fi
  • ZigBee
  • interference

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering


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