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Technology Stocks : Qualcomm Moderated Thread - please read rules before posting

QCOM 177.24

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Oct 30 3:59 PM EDT

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To: Eric L who wrote (17288)	12/14/2001 5:34:44 PM
From: propitious7	Read Replies (2) of 196356

Help on wCDMA Report Card Colleagues Eric and others have been spinning a fine thread concerning the reasons Euro and GSM carriers have resisted CDMA in the Q flavors and in Eric's Post #16779770 he acknowledges specific technical points made by IJ on comparison of cdma@000 vs. wCDMA concluding"That was a fine explanation from Dr. Jacobs.....Other captains of industry have divergent opinions on that.. . . . I listen to his. I listen to theirs." Who can help me understand the rebuttal of IJ's points; in general, who can help fill in a report card on wCDMA. A lot of smart people are working on it and a lot of carriers are committing capital, market position and reputation to build wCDMA so what are the respects in which it is -- or will be when evolved -- be superior to cdma2000?? Can we grade wCDMA on the following: 1,. Data rate -- Will wCDMA meet or beat the 2.4mbps for do? 2. Capacity increase -- Will wCDMA permit a 2x or greater voice capacity increase? Does wCDMA have capacity enhancements comarable to the promise bruited by IJ to 2x capacity again with dual antennas and other H.Potter magic? 3. Throughput Cost -- Q cost projects data throughput cost per 1M bits at two cents for do and seven cents for wCDMA; Is this eyewash? What's the counter-position. I never read about throughput/cost in wCDMA materials 4. Power Usage -- We read about great computation demands on w and much higher power usage? So? or NO. 5. Drop Rate -- We read about handoff problmes with wCDMA; is this just normal evolution of a new system or is there a congenital problem with synchronous operation? 6. Propagation -- IJ and others have said that dynamic range problems with synchronous can be overcome but only by increasing base stations; I have read three times more per area of service. Is this true, false or just temporary? 6. Radiation -- We read that the Chinese are claiming lower radiation emissions for cdma? Is this a corollary of power usage? Will radiation be higher or lower than cdma2000? 7. Bandwidth Requirement -- Eric writes that minimum for cdma2000 is 2.5mhz (Why is that, Eric, I thought it was 1.25mhz; is it that two bands are minimum?) and 10mhz for wCDMA ( I thought it was 5mhz -- again why double). Of course, to get comparable performance you have to compare 10mhz to 10mhz; but is there an advantage to using wider band or to using narrower band apart from obvious advantage that wider bandwidth may not be available until new spectrum is allocated for mobile use. 8. Async vs. Sync -- Is there some performance advantage to asynchronous service apart from not having to depend on U.S. provided GPS for time signal? When wCDMA service is normalized and optimized will there be advantages to async service? Should we assume that if EC does build a Euro GPS, then wCDMA service will be converted to sync timed to EuroGPS? 9. do for wCDMA. The advantages of data only service, segregating voice and data, seem so obvious why is this not adapted to wCDMA to provide flexibility and upgrade data rate? Any answers or steers to sources for study on the Comparative Advantages of wCDMA will be appreciated. propitious

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