• Second generation (like GSM) enabled voice traffic to go wireless• In several countries there are now more mobile phones than landline(wired) phones• Data handling capability of 2nd generation is limited• Third generation: should provide high bit rate services that enabletransmission and reception of high quality images and video and provideacces to the WEB• Third generation: referred to as UMTS (Universal Mobile TelecommunicationsSystem)• WCDMA (Wideband CDMA) is the main third generation air interfacein the world• Specification created in 3GPP (Third Generation Partnership Project)which is joint standardisation project of Europe, Japan, Korea, USAand China.• In 3GPPWCDMA is called UTRA (Universal Terrestrial Radio Access)FDD and TDD• Work for 3rd generation started in 1992 when the WARC (WorldAdministrative Radio Conference) of the ITU (International TelecommunicationUnion) identified frequencies around 2 GHz for 3G• Withing the ITU, 3G was named IMT2000 (International Mobile Telephony-2000)• The target of IMT was to have a single worldwide standard• WCDMA will be used by Europe, Japan, Korea in the WARC-92spectrum allocated for 3G• In North America, spectrum auctioned for 2G. No specific spectrumfor IMT-2000

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WCDMA for UMTS Luc Vandendorpe UCL Communications and Remote Sensing Lab 1 Introduction Second generation like GSM enabled voice trac to go wireless In several countries there are now more mobile phones than landline wired phones Data handling capability of 2nd generation is limited Third generation should provide high bit rate services that enable transmission and reception of high quality images and video and pro vide acces to the WEB Third generation referred to as UMTS Universal Mobile ......