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CDMA 2000
(Context: General)
1. Code division multiple access (CDMA) version of the IMT-2000 standard developed by the International Telecommunication Union (ITU). The CDMA2000 is third generation (3-G) mobile wireless technology that can provide mobile data communications at speeds ranging from 144 Kbps to 2 Mbps. Deployment is in the planning stages.
2. The cdma2000 system is an evolutionary enhancement of the IS-95 standards which support 3G services defined by the International Telecommunications Union (ITU). cdma2000 comes in two phases: 1XRTT and 3XRTT (1X and 3X indicates the number of 1.25 MHz wide radio carrier channels used and RTT stands for Radio Transmission Technology). The cdma2000 1XRTT, which operates within a 1.25 MHz bandwidth, can be utilized in existing IS-95 CDMA channels as it uses the same bandwidth, while 3XRTT requires the commitment of 5 MHz bandwidth to support higher data rates.
Reference:
2. NIST Journal of Research Abstract
See Also:
Library of Congress CDMA2000 Evolution: System concepts and design principles