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Technology Stocks : Qualcomm Moderated Thread - please read rules before posting
QCOM 170.90-1.3%Nov 7 9:30 AM EST
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To: Amots who wrote (79249)7/28/2008 2:18:48 AM
From: pheilman_  Read Replies (1) of 196546
 
Amots,

CDMA systems minimize transmitted power to just enough to have communication at the base receive antenna.

The peak power, which is the biologically relevant number, is higher in a TDMA system. If the transmitter is only on for 1 out of 8 slots, it must be, at a minimum, 8x stronger. As you ~concentrate the information to be sent into a shorter period, you must increase the bandwidth used to transfer the information. This allows a corresponding larger amount of noise into the receiver which must be counteracted by adding more transmit power.

--Paul
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