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</o:shapelayout></xml><![endif]--></head><body lang=PT link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-US>IEEE 802.22 to use VHF and UHF TV frequencies<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>The IEEE has recently released the new 802.22 standard for Wireless Regional Area Network (WRAN) using white spaces in the TV frequency spectrum.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>The IEEE 802.22 standard is designed to provide Rural Broadband Wireless Access using Cognitive Radio Technology. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>It uses VHF and UHF TV channels between 54 and 862 MHz and is claimed to have a theoretical range of up to 33 km (20 miles). It is envisaged that subscribers would use directional antennas on the roof.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>IEEE 802.22 can deliver a data rate of up to 19 Mbps in a 6 MHz wide USA TV channel. Channel Bonding, using more than one channel for Tx / Rx, can provide greater bandwidth. A single channel might be able to support 12 simultaneous users in the coverage area.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Read The Register article - Rural white space wireless standard signed off<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>http://www.theregister.co.uk/2011/08/01/rural_wireless_standard/<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>IEEE 802.22 Presentation<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>http://www.ieee802.org/22/Technology/22-10-0073-03-0000-802-22-overview-and-core-technologies.pdf<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Wiki - IEE 802.22<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>http://en.wikipedia.org/wiki/IEEE_802.22<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p></div></body></html>