February 2003
Brainy Radio
Researchers tune in on wireless devices that learn.
By Joab Jackson
A personal digital assistant (PDA) falls from its owner's pocket during lunch. After a little while on the restaurant floor, it awakens, calls home, and notifies its owner that it has been left behind. That's all in a day's work for a "cognitive radio," a wireless device that's aware of its environment and learns from its user.
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Massachusetts Institute of Technology