资料介绍
wcdma conceptWCDMA Overview
§d Application engineer Agilent Technologies Taiwan E-mail: chih-kai_wu@agilent.com Phone:(03)495-9342 A¤ :0800-047866
Agenda
CDMA overview WCDMA overview PSA measurement solution
Wireless Technology & Services Evolution
HIGH BIT RATE SERVICES SMS, IMPROVED SPEECH DIGITAL SPEECH ANALOG SPEECH 1G ANALOG
AMPS,TACS, NMT
3G 2G+
IS-95B, NADC+, GPRS
IMT-2000 1999
W-CDMA Cdma2000 TD-SCDMA EDGE
SERVICES
2G
DIGITAL
GSM, NADC 1992 PDC
1985 INTERNATIONAL GLOBAL
LOCAL
NATIONAL
COVERAGE
The CDMA Concept
Multiple Access Method for Wireless Communication What is CDMA ? CDMA Capacity
Multiple Access Approaches
Frequency Division Multiple Access Time Division Multiple Access
1 2
N 3
Spread Spectrum Multiple Access
Code Division Multiple Access
Multiple Transmitt
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