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Technology Stocks : Qualcomm Incorporated (QCOM)

QCOM 174.10

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To: JMD who wrote (11065)	6/4/1998 8:06:00 PM
From: A.J. Mullen	Read Replies (1) of 152472

Sprint ION or Fastbreak: my question comes from the opposite direction. Mike, you asked whether the local phone companies could be bypassed by going wireless. My question is: why can't CDMA be used to make more efficient use of whatever medium is used, viz. copper or fibre? CDMA is a practical method to approach the theoretical maximum information content within any given signal. As far as I know there is nothing special about wireless. Surely CDMA (and to a lessor extent, TDMA) would allow a greater flow rate of information. When you think about, it's crazy to have a dedicated piece of wire from your telephone that does nothing most of the time. Even when you're using the telephone, a processor could compress the speech to occupy the line for just a tiny fraction of the time you are conversing (TDMA), or interweave your voice with other signals (CDMA). Why aren't cable companies using CDMA? There is (or was) a company (Pairgain?) that was developping a method of boosting the bandwidth of boring old copper wires. Does/did this use CDMA? AJ

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