A CDE Definition
(EVolution-Data Optimized) A 3G digital service provided by CDMA cellular carriers worldwide such as Verizon and Sprint in the U.S. EV-DO works on EV-DO cellphones as well as laptops and portable devices that have EV-DO modems. Part of the CDMA2000 standards, EV-DO users have experienced data rates up to 800 Kbps typically with more latency than DSL and cable service. EV-DO is also known as "1xEV-DO."
Revisions 0, A and B
Revision 0 of EV-DO provided a data rate of 2.45 Mbps, which was increased to 3.1 Mbps with Revision A (TIA-856 Rev. A). In addition, Revision A is based entirely on the IP protocol.
Revision B (TIA-856 Rev. B) is the "multicarrier" version and supports two or three channels (2x, 3x), which can be combined to increase the data rate for video and other high-speed requirements. There have been several nomenclature variations; for example, 3-channel EV-DO Rev. B has been called "3XRTT," "MC-3X," and "IMT-CDMA MultiCarrier 3X." See CDMA, CDMA2000, WCDMA, LTE and cellular generations.
EV-DO Signal Strength
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