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single carrier FDMA ( SC- FDMA)

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rmreddy

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single carrier fdma

hello everyone,
i need some background on SC-FDMA and how it is different from OFDMA.

and any material related to LTE ( long term evolution ) will be helpful.
 

rmreddy

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hello guys , can anyone help me out..
 

rp2008

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do google search on LTE..u'll find a lot of materials ..
 

sureshreddy

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In LTE OFDMA is used in Downlink.OFDMA having High PAPR.signals with high PAPR requires highly linear power amplifiers inorder to avoid excessive intermodulation distortion so,amplifiers must be operate with a large backoff from its peak value.High PAPR is particularly critical for uplink trasmissions because of power constraints at UE.

SC-FDMA is used in uplink.SC-FDMA having low PAPR.Because of low PAPR, SC-FDMA is well suited to uplink.
 

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