Amid the brouhaha over potential interference with wireless microphones and digital television signals in the white-space band, Motorola has presented the Federal Communications Commission with an updated version of a wireless device designed to work in the spectrum. Commission, which favors unlicensed white-space spectrum--that unused portion next to television signals, has already looked at devices from companies such as Microsoft and Philips Electronics. Early devices reportedly have not performed well in tests.
Motorola's device primarily looks at a database of existing spectrum licensees to avoid interfering with signals. According to a Dow Jones report, the vendor has now updated the device to include sensors for adjacent channels that uses "techniques commonly utilized in cellular phones and two-way radios," according to a draft of the FCC presentation.
The sensors are designed to detect "nomadic" wireless microphones to avoid interfering with circumstances such as "roving, unplanned news-gathering operations," the draft document says.
To read more about Motorola's white-space device:
- check out this Dow Jones article
CTIA, carriers join NAB against white space devices
Google, Philips, Moto submit white space devices