Siemens Message Board - Msg: 23111177

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Technology Stocks : Siemens

SI 15.29

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Dec 24 12:59 PM EST

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To: waitwatchwander who wrote (330)	12/18/2006 10:48:16 AM
From: Eric L	Read Replies (1) of 356

Another typo ... You asked ... If it [TS-SCDMA] is such a serious contender, why haven't we heard noise about this "better" solution instead of the use of w-cmda in 850 Mhz? In my prior post here I rsponded ... Because it (TD-SCDMA] is a Time Division Duplex (TDD) solution. It was proposed but not chosen by ETSI as the primary access mode of UMTS for use in traditional cellular paired spectrum and an FDD version has never been standardized in 3GPP. WCDMA was chosen as the Frequency Division Duplex (FDD) solution -- the primary UMTS access mode for use in unpaired spectrum. That should, of course, read ... Because TD-SCDMA [UTRA TDD LCR] is a Time Division Duplex (TDD) solution. It was proposed but not chosen by ETSI as the primary access mode of UMTS for use in traditional cellular paired spectrum and an FDD version has never been standardized in 3GPP. WCDMA was chosen as the Frequency Division Duplex (FDD) solution -- the primary UMTS access mode for use in paired spectrum -- i.e. traditional cellular spectrum which in China is 900 MHz for GSM and 850 MHz for CDMA. Sorry 'bout dat. - Eric -

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