Knifefish Communication Helps Eliminate Bandwidth Jamming

Knifefish Communication Helps Eliminate Bandwidth Jamming
May-10-18
The glass knifefish has inspired a new method of eliminating bandwidth jamming when using multiple wireless devices.

The glass knifefish lives in the complete darkness of caves, where it navigates and communicates using an electrical signal. To prevent interference, a pair of fish that use a similar frequency will automatically adjust their signal using a neural algorithm called jamming avoidance response (JAR)

Armed with that information, the team from the University of Georgia used an optical component called a semiconductor optical amplifier (SOA) that can identify its own signal properties and check to see if any other signal could potentially jam it. If such interference seems likely, the SOA will alter its frequency in a way that doesn’t cross the detected signal in the process. According to assistant professor Mable P. Fok, "Eventually, this approach could be used to achieve effective use of the wireless spectrum by allowing wireless devices to automatically move to a frequency that doesn't interfere with other signals nearby."

Image Credit: Original photo by Will Kirk, Wikipedia. Image modified by Mable P. Fok, University of Georgia.

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