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WCDMA Basic Theory
WIRELESS NETWORK MASTER PLANNING
By: Manuel M. Aquino Jr. Future Access Technologies
Access Network Planning Department
WNMP WCDMA
The Goal of this Course
After this course, you should be able to
• Understand the technology behind WCDMA and its advantages
• Understand the roots and roadmap of WCDMA
• Be familiar with the basic architecture of a WCDMAnetwork
WNMP WCDMA
Content
WCDMAOverview
Advantages of WCDMA
WCDMABasic Principle
WCDMAArchitecture
Training GLOBE TELECOM
WNMP WCDMA
Evolution of Mobile Communications
1G
Analog cellular
Voice
2G
Digital cellular
Voice /data
3G
Digital cellular
Voice / high speed data
4G
Hybrid IPbased
Voice / very high speed data
AMPS CDMA 1XRtt TACS GSM GPRS
CDMA2000
WCDMA HSDPA
9.6 Kbps 64 Kbps/144 Kbps 2 Mbps >10 Mbps
80’ 1992 1999 2001 2004 Not yet deployed
AMPS: Advanced Mobile Phone System TACS: Total Access Communication System GPRS: General Packet Radio Services
WNMP WCDMA
Evolution of Mobile Communications
1G – 1st Generation: Analog Cellular 1) Feature:
• frequency division multiple access (FDMA) • analog signal
• narrow band
2)Main mode: AMPS TACS NMT 3)Limitations:
• hard to develop digital bearer services
• cannot adopt to digitization of fixed networks • low frequency efficiency
• cannot meet larger capacity requirements • easy to be eavesdropped
WNMP WCDMA
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