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In this paper, different techniques for reducing Peak To Average Power Ratio (PAPR) is discussed. The performance of an Orthogonal Frequency Division Multiplexing (OFDM) system is degraded if the Peak-to-Average Power Ratio(PAPR) is high. An OFDM system dynamic range is typically two or four times larger than a single carrier system increasing value of the dynamic range will lead to an increased cost, power consumption of transmitter amplifier and also lead to high Peak to Average Power Ratio (PAPR). This is one of the major drawbacks of OFDM system. A serious problem of large PAPR presents when energy-inefficient nonlinear power amplifiers are used.
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