1xEV-DOEvolution Data Optimized -- An evolution of cdma2000® 1x technology and is an 3G standard. 1xEV-DO provides peak data rates of up to 2.4 Mbps. Also known as high data rate, or HDR, providing high-speed, high-capacity wireless Internet connectivity, and is optimized for packet data services. EV-DO only addresses data - not voice. It requires a dedicated slice of spectrum, separate from voice networks using standards such as 1xRTT.
1xRTT One Times Radio Transmission Technology (the ʺone timesʺ refers to the frequency spectrum), a 3G standard technology that supports speeds up to 144 kbps.
2G Second generation - 2G data transfer uses as much network capacity as any other call, and uses that capacity for the duration of the connection, regardless of whether data is being transmitted at any one moment. In contrast, the newer 3G standard is much faster for data, and only uses network capacity when data is actively being transmitted.
3G Third generation—A new generation of wireless systems, including cdma2000 1xRTT and 1xEV-DO, that provides high- speed data transmission (144 kbps and higher) and Internet Protocol (IP) based services in fixed, portable and mobile environments.
bps bits per second—The actual data speed over the transmission medium. See also baud.
carrier A wireless network service provider, licensed to use radio frequencies in particular regions.
CDG CDMA Development Group. Consult www.cdg.org. Also a series of three test suites required to certify a device for use on a CDMA network.
CDMA Code Division Multiple Access—A wideband spread spectrum technique used in digital cellular, personal communications services, and other wireless networks. Wide channels (1.25 MHz) are obtained through spread spectrum transmissions, thus allowing many active users to share the same channel. Each user is assigned a unique digital code, which differentiates the individual conversations on the same channel.
CDMA2000 1X Also known as 1xRTT, this is a high-speed standard for CDMA cellular communications.
