Communications of the ACM
Microsoft Reinvents Wi-Fi For White Spaces
Krishna Chintalapudi of Microsoft Research India
Credit: Microsoft Research
Microsoft researchers have developed WiFi-NC, a type of Wi-Fi network that runs at peak performance even when interference is present. The network utilizes a new Wi-Fi standard that uses more of the electromagnetic spectrum.
WiFi-NC uses an array of tiny, low-data rate transmitters and receivers, which when bundled together work in the manner of a standard Wi-Fi radio, but can switch between white-space frequencies more efficiently. "The entire reception and transmission logic could be reused from existing Wi-Fi implementations," says Microsoft researcher Krishna Chintalapudi.
The researchers say the system makes more efficient use of the entire range of spectrum, especially the white spaces that were freed up by the U.S. Federal Communications Commission in 2008.
"It is our opinion that WiFi-NC's approach of using multiple narrow channels as opposed to the current model of using wider channels in an all-or-nothing style is the more prudent approach for the future of Wi-Fi and white spaces," Chintalapudi says.
From Technology Review
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