Analytical calculations of CCDF for some common PAPR reduction techniques in OFDM systems

Abstract

High PAPR is one of the major drawbacks of OFDM systems. It drives the transmitter's power amplifier into its nonlinear region, thus causing nonlinear distortions. Square rooting technique (SQRT) and μ-law companding technique are the simple techniques to reduce PAPR in OFDM systems. In this paper, we derive analytical CCDF for both the techniques. The comparisons of SQRT and μ-law companding techniques are carried out using theoretical and simulation results. It is verified that the μ-law companding technique is better than SQRT technique for PAPR reduction.