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Technology Stocks : Qualcomm Incorporated (QCOM)

QCOM 166.47

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1:08 PM EST

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To: Mika Kukkanen who wrote (19679)	12/14/1998 10:18:00 AM
From: Clarksterh	Read Replies (3) of 152472

Mika - My last response to you. Lowering the rate will reduce capacity. It absolutely stuns me that so many people who know nothing technical, and who acknowledge that Ericsson is a squirly company when it comes to telling the straightforward truth (do you really believe that Ericsson's problems stem from Asia, not being creamed by the competition like Nokia), seem to believe this. It is not true. What if the decided to use a chip rate of 10MHz in an allocation of 5 MHz? Would that get you more capacity? Obviously not since you would have to filter out much of the chip rate and in the process would get substantially worse performance (because you disrupt the signal) than say 3.6MHz chip rate. How about a 5MHz chip rate? The problem is that filters are not crisp, and the faster you make them fall off the more complex they become, but also the more distortion you add. This distortion really screws up the data, and thus there is an optimum transmission rate for any type of signal. This optimum is very dependent on the type of transmission being sent. If Ericsson's chip rate is really superior, all that they have to do to win, and make Qualcomm look extremely foolish, is show that it does indeed give better transmission rates since Qualcomm has agreed to use whichever technology is better. Towards this goal there have been several independent studies which show CDMA-2000 has significantly more capacity that W-CDMA. Point me to even one such study which says the opposite. (You won't find it). In any case, I say to you the same thing that Qualcomm says to Ericsson - put up or shut up. Clark

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