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To: Asterisk who wrote (12423)7/15/1998 9:03:00 PM
From: Clarksterh  Respond to of 152472
 
Michael - From what I understand in TDMA applications you pulse the power to the PA. This turns the PA on and off and thus saves power.

I agree, but when it is on it is really cooking because it is handling a rate several times the nominal rate. The only possible savings come if the PA is turned completely off for TDMA between timeslots so that the baseline power draw is non-existent. But I think this unlikely although I don't actually know it.

Clark



To: Asterisk who wrote (12423)7/15/1998 9:09:00 PM
From: Walter Liu  Respond to of 152472
 
If you want to use the duty cycle as your argument then
you have to use the same for CDMA.
GSM once you obtain 1 of 8 timeslot you transmit full time
during that time slot regardless of you are talking. If
you don't use DTX.
CDMA you always transmit in the time domain but within the
time you are not always transmiting all the time. In the
case of data dormant feature for future CDMAOne, you will
not transmitt when you already obtain the data from internet
but looking at the web page, in fact you will not even obtain
a traffic channel whenever you are not using anything, this
reduces duty cycle very low.
GSM is fixed at 1/8 regardless of use. 1/8 power if you like.
Effecient? no.