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DFT-spread-OFDMA (DFT-S-OFDMA) technique has been adopted as the uplink access scheme in emerging cellular systems such as the 3GPP long term evolution (3GPP-LTE), in order to reduce the peak-to-average-power ratio (PAPR). In this scheme, data symbols are pre-coded using a DFT operation at the transmitter before being sent to the OFDM modulator. Moreover, emerging cellular systems will also deploy...
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