White Spaces Devices
Various proposals, including IEEE 802.11af, IEEE 802.22 and those from the White Spaces Coalition, have advocated using white spaces left by the termination of analog TV to provide wireless broadband Internet access. A device intended to use these available channels is a "white-spaces device" (WSD). Such devices are designed to detect the presence of existing but unused areas of airwaves, such as those reserved for analog television, and utilize these unused airwaves to transmit signals for Internet connectivity. Such technology is predicted to improve the availability of broadband Internet and Wi-Fi in rural areas.
Early ideas proposed including GPS receivers and programming each WSD with a database of all TV stations in an area, however this would not have avoided other non-stationary or unlicensed users in the area, or any stations licensed or altered after the device was made. However, these efforts may impact wireless microphones, medical telemetry, and other technologies that have historically relied on these open frequencies.
Read more about this topic: White Spaces (radio)
Famous quotes containing the words white, spaces and/or devices:
“Kind Sir: Lost and of your same kind
I have turned around twice with my eyes sealed
and the wood were white and my night mind
saw such strange happenings, untold and unreal.”
—Anne Sexton (1928–1974)
“In any case, raw aggression is thought to be the peculiar province of men, as nurturing is the peculiar province of women.... The psychologist Erik Erikson discovered that, while little girls playing with blocks generally create pleasant interior spaces and attractive entrances, little boys are inclined to pile up the blocks as high as they can and then watch them fall down: “the contemplation of ruins,” Erikson observes, “is a masculine specialty.””
—Joyce Carol Oates (b. 1938)
“There is nothing in machinery, there is nothing in embankments and railways and iron bridges and engineering devices to oblige them to be ugly. Ugliness is the measure of imperfection.”
—H.G. (Herbert George)