Feature
Optical Wireless Communications: The New “Hot Spots”?
Soon, indoor solid-state lighting may feed data to our electronic devices. “Li-Fi” could take some of the burden off crowded radio frequencies and open up new possibilities for communications and positioning applications.
We use many wireless devices indoors—for better or for worse. Cellular telephones replace landlines in many homes; public Wi-Fi “hot spots” slow down during times of peak demand; laptop users wonder whether the neighbors are picking up their radio-frequency (rf) signals.
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