IMT-2000

IMT-2000 (International Mobile Telecommunications-2000) is the global standard for third generation (3G) wireless communications as defined by the International Telecommunication Union.

In 1999 ITU approved five radio interfaces for IMT-2000 as a part of the ITU-R M.1457 Recommendation. The five standards are:


 * IMT-2000 CDMA Direct Spread
 * also known as W-CDMA, used in UMTS, the successor to GSM
 * IMT-2000 CDMA Multi-Carrier
 * also known as CDMA2000, the successor to 2G CDMA (IS-95)
 * IMT-2000 CDMA TDD
 * also known as TD-SCDMA
 * IMT-2000 TDMA Single Carrier
 * also known as EDGE, an intermediate 2.5G technology
 * IMT-2000 FDMA/TDMA
 * also known as DECT

To meet the IMT-2000 standards, a system must provide peak data rates of at 384 Kbit/s for mobile stations and 2 Mbit/s for fixed stations.