A recent article at ars Technica , descibes how Wi-Fi signals can be used to perform calculations , similar to the calculations performed in a computer processor .
- A few Wi-Fi transmitters and your house becomes a coprocessor
- Could Wi-Fi waves reverberating in a room perform analogue computation?
The research is being conducted under the auspices of ‘thermal cooling of computer equipment’ .
As can be seen from the image below there is a more practical use for the technology .
The system described in the article uses the Fourier Transform to decompose the Wi-Fi signals , in the experiment four Wi-Fi antennas were used . Perform a scan in your home using your own smartphone or computer equipped Wi-Fi device , how many Wi-Fi transmitters do you pick up ?
In laymans terms a Fourier Transform decodes the component frequencies of any given signal and cancels out signal noise . The signal can be any electromagnetic wave , sound wave or similar .
The system also makes use of beam forming .
Beam forming and the Fourier Transform of a signal are the essential components of RADAR systems .
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