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Pastimes : Home on the range where the buffalo roam
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To: Raymond Duray who wrote (10554)2/21/2001 10:28:38 AM
From: slacker711  Read Replies (2) of 13572
 
Hi Ray....

That is one interesting interview. I actually agree with the central point that applications are what will drive subscriber growth. However, there are more than a couple of points that are blatantly false.

Pinkham: This goes back to the kinds of games that technology people can play. To a certain extent, that could be true, but then when you get a fully loaded network, the TDMA has the same capacity as the CDMA network.

I think that even Qualcomm detractors usually concede the point that CDMA provides about 1.5-2x the capacity of either GSM or TDMA operators. Of course, they believe that Qualcomm renege on their promise of 10x but that is another story. I really dont think you could find an engineer who believes they have the SAME capacity. Even, GSM and TDMA dont have the same capacity....GSM is a little bit higher.

TDMA takes a different approach. They have what's called pico cells or hierarchical cell structures. You can have pico cells, regular cells or macrocells, so it's an umbrella kind of effect. With CDMA you just segment the cells and make smaller and smaller cells.

He actually is emphasizing one of CDMA's strengths. Network planning for a CDMA operator is much simpler than for a TDMA/GSM operator. A CDMA operator doesnt have to worry about frequency reuse and cell planning. Again, this isnt really disputed by anybody I have read.

Slacker
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