Modification of Existing PAPR Reduction Techniques to Improve PAPR Performance of the System using CCDF

Abstract

OFDM is a multicarrier modulation technology utilized in various wireless communication systems and standards for its high data rate, high spectral coherence, and tolerance to multi-path fading channels. However, one of the most significant barriers in implementing an OFDM system is decreasing the peak-to-average ratio (PAPR). High PAPR is generated by significant envelope variations in the OFDM signal, which mandates the use of an extremely linear power amplifier. Power amplifiers with a large linear range are massive, costly, and difficult to manufacture. As a result, a plethora of PAPR reduction techniques for OFDM signals has been proposed in the literature. The subcarriers of an OFDM system are narrowband and need precise frequency synchronization between the sending and receiving ends. The primary focus of this research is on PAPR reduction in OFDM systems employing partial transmit sequence (PTS) and selected mapping approaches (SLM).