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Introduction

Historical Background

GSM

EDGE

WCDMA

  WCDMA

Carrier Spacing and Deployment Scenarios

Logical Channels

Control Channels

Uplink Physical Channels

Downlink Physical Channels

Packet Data

Handovers

Soft Handovers

Chapter Summary

UMTS

The Future

Final Thoughts

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WCDMA

WCDMA of 3G potentially will offer the user significantly increased data throughput rates. Speeds of up to 2mbit/s and higher are being predicted but it will be sometime before these are achieved. New techniques such as voice over IP are being developed for use on the Transport Infrastructure and will bring significant advantages to the operator especially in terms of data compression techniques used in such transmission modes as ATM. Increased data throughput means greater capacity for a given amount of frequency spectrum and thus lower costs for both Infrastructure and spectrum licences. Potentially the benefits of WCDMA to the user and operator are massive with greater data rates for the user and reduced costs for the operator.

 

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