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To: Rick who wrote (89634)	12/8/2000 10:15:45 PM
From: Rick	Respond to of 152472

The paragraph before the CDMA one may also be of some interest. "In America, the TDMA networks plan to use a more advanced technology known as Enhanced Data Rates for Global Evolution (EDGE), which rather than simply adding a packet-switched stream to the existing signal uses a different signal that is modulated at far higher speed to make better use of the available spectrum. But this not only takes channels away from voice, but demands extra capacity because the signals are so different from standard TDMA that they require "guard bands" of empty space on either side of its channels to prevent interference. High modulation rates also mean lower range, so this may require more cell sites. Even more worrisome, EDGE network equipment and handsets may not be available until 2003, by which time its 100-200kps speed (which is shared over all the data users in a cell, potentially providing each user with far lower rates) will look rather poor next to the proper 3G solutions then coming out on other networks." - Fred PS: What a combination: expensive, slow and obsolete, all in one!