SC-FDMA was introduced in the uplink to optimize the handset's transmit power without the need for expensive power amplifier (due to better PAPR requirement). But the question is with the initial silicon and hardware, the handset will suck down more power than 2G and 3G chipsets that have been refined over many generations of development. It will be interesting to see whether SC-FDMA can help offset this.
source: Unstrung
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