PLatter: On the Feasibility of Building-scale Power Line Backscatter
Talkat 19th USENIX Symposium on Networked Systems Design and Implementation (NSDI '22) · 2022-04-04..04-06·
summary
PLatter demonstrates that injecting a 13 MHz carrier into building power lines lets wall-mounted battery-assisted tags modulate parasitic impedance amplitude modulation and be read hundreds of feet away; a lab VNA and a custom reader with real-time impedance tuning and a 60 Hz notch filter support trials on a 300-foot industrial testbed showing up to 4 Mbps from tags a few centimeters from cables, currently unidirectional with sensitivity to appliance-driven impedance changes.
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