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Technology Stocks : Qualcomm Incorporated (QCOM)

QCOM 155.60

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To: w molloy who wrote (9281)	3/18/1998 1:44:00 AM
From: Asterisk	Read Replies (1) of 152472

I can take the wrist slap from surfer mike, 'cause if he hits me I'll tell his significant other that he is in the tub with Madge the operator again :) (inside joke). O.K. I stuck my neck out so now I get to show how ignorant of communications protocol I really am. As I said the analogy was great(most of the time that is the only way I can understand a new concept), I just felt that the issue (or what I felt was the issue) was getting the dirty end of the stick in the rush to educate. Many times I loose sight of the forest through the trees and thus have sensitized myself to that. To look at the same footprint and geographical area I think you may want to look to Hutchison in Hong Kong. They have had both CDMA and GSM systems running for quite some time covering basically the same area. You can also probably choose a couple U.S. cities (even though they have pretty immature networks). The basic structure of TDMA in fact is not digital. Please allow me to explain before someone has a fainting spell. In most TDMA applications (as I understand them, and PLEASE correct me if I am wrong), the voice is indeed digitized with a CODEC. That is the same in CDMA, but at that point the basic digitization stops. A TDMA signal from my understanding is basically an analog (read AMPS in this application) that is turned on and off really fast. A CDMA signal takes one of the voice (or whatever) packets generated by the CODEC and spreads it with a Walsh code. That mush is then transmitted as a spread spectrum signal. You are correct then in this view that anything can feed these packets (whether they be voice/data/video or AWGN (noise)) into the modulator. My point I guess was that CDMA was designed to packetize everything while TDMA wasn't. As you can see my knowledge of the subject is crude at best. If you asked me to press harder into the subject I would steer you to QDOG (the pup) and back away. As far as internet protocol I will have to back away immediately. I can follow your discussion of the main points but after that I would have to go back to my notes from college (and let me tell you, you really do NOT want me to do that). I thank you for not putting words into my mouth, it is hard enough for me to follow those that come out of it already. In conclusion I guess that I would have to say that my point is that I think that CDMA as a system was more intrinsically designed to be a data system than TDMA. I will add what I always add. If my information is incorrect or you believe it is flawed PLEASE respond. I am big enough to learn from others. That is what we are all here to do right? With the notable exception of candlestick and chuckj.

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