A new hybrid approach for reducing the high PAPR in OFDM and F-OFDM systems with low complexity

Abstract

The large (peak to average power ratio (PAPR)) phenomenon is a downside in filtered multiplexing of the orthogonal frequency division (F-OFDM- Beyond 5G candidate) because of the nonlinearity design of the transmitter. Recently, several hybrid approaches have been implemented to minimize the high value of PAPR, at the expense of increasing the level of computational complexity in the system. In this paper, a new hybrid approach has been introduced throughout parallel to combine the approach of selective mapping (SLM) with the approach of partial transmit sequence (PTS) with (CSS) to improve the efficiency of PAPR reduction with lower complexity in numerical methods. The results indicate that the F-OFDM systems with the proposed hybrid method have superior performance compared to existing hybrid methods in terms of PAPR reduction, side-information, and computational complexity. Furthermore, a new hybrid approach suggested preserving the BER and PSD efficiency without deterioration.