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To: engineer who wrote (11186)5/31/2000 6:58:00 PM
From: Clarksterh  Respond to of 13582
 
Engineer - In the case of HDR, the channel is not symetrical, so the sending is more like full rate IS-95.

Of course you are right. The power would be burned in the reverse link, but if I remember correctly the reverse rate for HDR is still several hundred k which is more than 10 times faster than is used for voice communications. Of course in average web use it is much more bursty than voice. Thus it may actually use the power at the same average rate as a normal phone unless you are streaming something. But this same logic applies to GPRS which also will probably use much more capacity on the forward link where it doesn't eat handset power.

Clark

PS Just to reiterate (so no one thinks I'm claiming CDMA has no advantage), CDMA inherently uses less RF power than pure TDMA, and thus I'd expect HDR to use substantially less power than GPRS, but the trend to using more power as the transmit rate goes up is the same for either technology.