The International Journals of Engineering & Sciences (IJENS)
Long Term Evolution (LTE) is the last step toward the 4th Generation (4G) of radio technologies designed to increase the capacity and speed of mobile telephone networks. LTE has adopted Orthogonal Frequency Division Multiplexing (OFDM) for the downlink transmission. OFDM meets the LTE requirement for spectrum flexibility and enables cost-efficient solutions for very wide carriers with high peak rates. However, the potentially large Peak-to-Average Power Ratio (PAPR) of the transmitting signals has limited its application. This high PAPR causes interference when the OFDM signals are passed through an amplifier which does not have enough linear range.