IMT-2000 - Definition and Overview

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 or UTRA-FDD, used in UMTS
• IMT-2000 CDMA Multi-Carrier
  • also known as CDMA2000, the successor to 2G CDMA (IS-95)
• IMT-2000 Time-Code
  • this summarises UTRA-TDD (standardised in UMTS) and TD-SCDMA
• IMT-2000 TDMA Single Carrier
  • also known as EDGE, an intermediate 2.75G technology
• IMT-2000 FDMA/TDMA
  • also known as DECT

External link

• ITU home page for IMT-2000 (http://www.itu.int/home/imt.html)
• About Moible Technology and IMT-2000 (http://www.itu.int/osg/spu/imt-2000/technology.html) A paper by ITU describing the various 3G standards in the IMT-2000 family