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Ultra Mobile Broadband will apparently supercede EVDO’s name and standards: The CDMA Development Group, a trade association, is looking to the simpler name to brand faster speeds coming in future standards. While EVDO Rev. A is rolling out now with much higher rates and Rev. B is on the horizon with about 50 Mbps of downstream peak service, Rev. C will be rebranded as UMB—and achieve 280 Mbps downstream in about 2009. UMB will use both MIMO (multiple receive/transmit antennas for beamforming and multiple spatial streams) and SDMA, which allows datastreams to be steered to particular clients, reusing the same frequencies over space.
This BetaNews article also notes that there are 44.4m EVDO subscribers worldwide and 83.6m UMTS users. 1xRTT + EVDO totals 267.2m, however.
Posted by Glennf at December 5, 2006 3:14 PM