The Risk From Power Lines: How to Sniff the G3 and Prime Data and Detect the Interfere Attack
summary
Method to sniff narrow-band PLC (G3 vs Prime) by capturing raw samples, band‑pass filtering, computing autocorrelation → FFT power spectrum, and matching against an ideal OFDM spectrum using normalized cross‑correlation. Target frequency resolution is 0.5 kHz (choose FFT length accordingly, roughly N≈124), and match threshold is cross-correlation >0.9. Continuous jamming is visible in the spectrum; stealthy packetized interference is found by splitting records by symbol length and correlating with MAC timing. Detection approach proves practical on received captures.
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chapters (10)
- 0:00Intro
- 1:07Abstract
- 1:50What is PLC?
- 2:49PLC classification
- 4:02G3 and Prime Features
- 7:23How to identify G3 or Prime-Get Signal Power Spectrum
- 10:47How to identify G3 or Prime-Calculate OFDM Power Spectrum
- 12:51How to identify G3 or Prime-Identify G3 or PRIME
- 14:53Modulation and Demodulation structure
- 15:41How to detect the interfere attack
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