Ambient Backscatter
>> YOUR LINK HERE: ___ http://youtube.com/watch?v=8PDfprKzpbg
Ambient backscatter transforms existing wireless signals into both a source of power and a communication medium. It enables two battery-free devices to communicate by backscattering existing wireless signals. Backscatter communication is orders of magnitude more power-efficient than traditional radio communication. Further, since it leverages the ambient RF signals that are already around us, it does not require a dedicated power infrastructure as in RFID. http://www.washington.edu/news/2013/0...
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