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Introduction to WCDMA


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  WCDMA UMTS Subscriber Identity Module - USIM

A UMTS subscriber identity module (USIM) is an "information" card that contains service subscription identity and personal information. This information includes a phone number, billing identification information and a small amount of user specific data (such as feature preferences and short messages.) This information can be stored in the card rather than programming this information into the phone itself. This intelligent card, either credit card-sized (ISO format), or the size of a postage-stamp (Plug-In format), can be inserted into any UIM ready wireless device.



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Introduction to WCDMA 

This book explains the basic components, technologies used, and operation of UMTS WCDMA systems. You will discover why mobile telephone service providers have upgraded from 2nd generation digital systems to more efficient and feature rich 3rd generation system. You will also discover how 3rd generation systems are gradually evolving into 4th generation ultra broadband multimedia systems.

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