I. Introduction
Orthogonal Frequency Division Multiplexing (OFDM) is a method of encoding digital data on multiple carrier frequencies widely used in contemporary communication systems. OFDM has developed into a popular scheme of wideband digital communication, either wireless or over copper wires, used in applications such as digital television and audio broadcasting, DSL broadband internet access, wireless networks, and 4G mobile communications. OFDM has been adopted as a major data transmission technique used by the following wireless communication standards: Wi-Fi, WiMax, LTE, LTE-A. However, the main drawback of the OFDM systems is a high peak-to-average power ratio (PAPR). The high PAPR level of the OFDM signal increases the requirements of the dynamic range of Digital to Analog and Analog to Digital Conversion (DAC and ADC), and reduces the efficiency of RF power amplifier (PA).