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As the power consumption is an essential issue for designers of mobile devices The 3rd Generation Partnership Project (3GPP)–Long Term Evolution (LTE) employs a multicarrier communication technique on the air interface, Single Carrier Frequency Division Multiple Access (SCFDMA), in uplink scenario and Orthogonal Frequency Division Multiple Access (OFDMA) in the downlink. SCFDMA core modulation technology has a significantly lower Peak to Average Power Ratio (PAPR) compared to OFDMA. This paper studies the PAPR reduction techniques for LTE SC-FDMA system.