Performance of PAPR Reduction in Precoded Hybrid OFDM System

Abstract

The purpose of the paper is to provide a broader understanding of high PAPR in OFDM and proposed a hybrid method to mitigate high PAPR using precoding scheme. This paper advanced a beneficial mode to ease OFDM signals PAPR. The suggested method is data-independent and hence, does not command new dispensing and optimization for every transmitted OFDM blockade. OFDM signal falling in PAPR is achieved through a suitable mixture of a precoding scheme with Selected Mapping (SLM), Partial Transmit Sequence (PTS), which spreads the power of each single modified symbol above the OFDM unit. The PAPR reduction efficiency factor is acquired for different hybrid methods, based on CCDF knowledge. Therefore, in this paper, an optimum PAPR can be achieved with less complexity by converting the OFDM signal into an appropriate precoded matrix with various transforms in conventional SLM-OFDM, PTS-OFDM and SLM-PTS-OFDM systems.