Investigation of Tone Reservation-based PAPR Techniques for Improving Power Amplifier Efficiency

Abstract

OFDM suffers from high peak-to-average power ratio (PAPR), and these large peaks require a linear (i.e. with a large input back-off) and consequently inefficient power amplifier (PA) at the analogue radio frequency (RF) front-end. This paper will investigate the potential improvement in PA efficiency and RF energy savings achieved through tone reservation-based PAPR reduction methods.