The FCC has certified Adaptrum’s white space technology working in conjunction with Google TV’s white space database.
Adaptrum said this is the first pairing with Google TV the FCC has certified. A white space broadcaster can employ systems that work in one of two ways. The system can either analyze broadcast signals and select an unoccupied band, or it can check against a database of existing local broadcast signals and select an unused frequency. Adaptrum's ACRS 1.0 does the latter.
Adaptrum has worked with Google's spectrum database team to implement the required TV band device-and-database interface and went through rigorous FCC testing leading to the certification of ACRS 1.0 with Google's database. Adaptrum ACRS 1.0 radio solution is also certified with the Telcordia (now Iconectiv) TV white space database.
The Adaptrum device can achieve data rates as high as 12 Mbps, depending on modulation and distance (i.e., received signal strength). Applications include wireless ISPs, surveillance and campus data networks. Adaptrum envisions portable TV band devices (TVBD) built into tablets and smart phones, in the same way that Wi-Fi transmitters are now deployed.
TV white spaces are unused TV channels between the active broadcast TV channels. In the U.S., the TV white spaces were opened up for unlicensed broadband access through the FCC's television band device rulemaking, completed in 2010.
TV white space has the potential to be valuable for broadband services because of the strength of the signals, which can penetrate into areas where cellular, Wi-Fi, and other wireless connectivity options are sometimes blocked.
The first deployment using the FCC certified Adaptrum ACRS 1.0 devices with the FCC certified Google TV white space database is live on the campus of West Virginia University (WVU), providing public WiFi service. The WVU deployment is a pilot project under the AIR.U initiative founded by New America Foundation, Declaration Networks Group, LLC, the Gig.U, Google and Microsoft to demonstrate the real-world potential of TV white space technology to deliver broadband coverage and capacity to rural areas. The WVU white space network is managed by the AIR.U co-founder Declarations Networks Group, LLC and is being expanded to additional applications and areas of the WVU campus.