Friend. The QPSK- OFDM system takes lesser power than the QPSK system. The reason is the no. of bits to be transmitted are grouped in a dense manner in the channel. More information is given out with less power being sent.
The QPSK system handles less no of bits. Hence lesser signal changes. Effectively, for the same no of bits transferred, power used by the QPSK system is greater.
bingdao89 Posted: 07 Jan 2009 11:24 Post subject: Regarding OFDM
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i agree with g.s.javed!