Evolution of GSM
EDGE (Enhanced Data rate for GSM Evolution)
- 2.5 G
- new modulation scheme but still 200kHz
- 384 kbps is the maximum data rate
- designed for service providers that may or may not migrate to UMTS
UMTS (Universal Mobile Telecommunications Systems)
- 3G
- 384 kbps for wide-area coverage
- 2 Mbps for local coverage
- WCDMA (wideband CDMA) (BW=5MHz @ 2GHz)
- Adopted by Europe and Japan