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To: Ruffian who wrote (22875)	2/12/1999 1:51:00 AM
From: engineer	Respond to of 152472

Kind of funny that the bandwidth needed is directly related to the spreading chip rate....so any first year engineering student can see that a 4.096 or a 3.84 chip rate would have a wider bandwidth than a 3.68 chip rate.......So just who is pulling our legs?

To: Ruffian who wrote (22875)	2/12/1999 2:43:00 AM
From: Clarksterh	Read Replies (3) \| Respond to of 152472

The country is likely to grant four licenses if all four operators use W-CDMA technology, but won't commit to four licenses if cdma2000 technology is used because of guard bands that may be needed to prevent interference between the different technologies. At first glance I can't see how this could be: 1) CDMA-2000 interferes with a CDMA neighbor. Essentially impossible - after all one of the advantages of CDMA is noise immunity. 2) CDMA-2000 is interfered with by a neighbor (CDMA or otherwise). Again essentially impossible for the same reason as above. (Unless W-CDMA is producing as much out-of-band noise as they are in-band ;) At most there should be a relatively minor decrease in capacity, and in any case W-CDMA would be similarly effected. 3) The only technical possibility is that CDMA-2000 produces enough out-of-band noise that it interferes with neighboring non-CDMA signals. This would be just plain bizzarre especially since, as engineer points out, W-CDMA has the harder job since they have the higher chip rate (although that is a little like calculating the volume of a box with only one dimension.). Given this I strongly suspect some serious shenanigans behind the scenes. Somewhat obviously, as the press release points out, the whole thing has the appearance of a set-up, and although I dislike the expression, it is the exception that proves the rule. (i.e. One out of 14 is using CDMA-2000, and in Ericsson's home turf?!) In all seriousness this has the appearance of some serious politics and little business or technical content. This is actually good since it should be easy to rip to pieces with a few measurements. Clark