THE contest to exploit the airwaves freed up when the US switches over to digital TV next year has now got some rules.
These so-called white space frequencies are valuable because they travel further through the atmosphere and so could hugely extend the range of Wi-Fi services such as mobile broadband and gaming networks. The downside is that signals from distant devices operating at the same frequency within this band are more likely to interfere than existing Wi-Fi networks do. That could mean trouble for digital TV.
The solution, says the Federal Communications Commission, is to let souped-up Wi-Fi devices…
