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Technology Stocks : Nokia Corp. (NOK)

NOK 6.280

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To: Eric L who wrote (2811)	2/25/2003 4:54:42 PM
From: waitwatchwander	Read Replies (3) of 9255

Re: Questions about EDGE technology Eric, Thanx for posting that EDGE article. It had information bits that even I understood. The following paragraph was especially enlightening. >>>>>> EDGE accomplishes this by using a different modulation technique than standard GPRS: eight phase shift keying (8-psk). It allows the transmission of 3 bits per symbol as opposed to the one allowed by the Gaussian minimum shift keying modulation used by GPRS. So imagine a typical GSM network where a single frequency is split up into 8 time slots. Five of these slots are used for voice, and three for GPRS data. When using EDGE, subscribers using those three data slots could be handled in only one time slot, freeing up the other two to increase capacity or speed. <<<<<<<<<<< Considering this higher compression of information and the points recently posted by Ilmarinen, isn't their a higher probability of noise within EDGE channels? And, isn't it quite possible that this higher noise will deem it necessary to retransmit data within EDGE channels and voice (or data) within adjacent channels? In case you forgot, Ilmarinen noted that EDGE increased the rf power in EDGE channels at the base station. I also now see that EDGE (like GPRS) does nothing to increase the voice capacity of GSM. It's hard to see carriers pushing hard with a data system which has the potential (if successful) to jeopardizes their ability to deliver adequate voice services. Our recent EDGE discussion also triggers me to consider another question. In your last posting you mentioned a quote attributed to Dr Jacobs. I remember him saying something like the "light of day" statement you mentioned. Given that he's not noted for being technically weak in the wireless arena, I ask you ... What was the basis of Dr. Jacobs' concern with EDGE technology? Your taking time to educate me in EDGE is most appreciated. Trevor

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