A NOVEL SCHEME UFMC-DSNT FOR PAPR REDUCTION IN 5G SYSTEMS

Abstract

The universal filtered multi-carriers (UFMC) waveform is a powerful candidate for multi-carrier modulation (MCM) that is employed in 5G systems. This is thanks to its low bit error rate (BER) and low latency compared to other waveforms, such as generalized frequency division multiplexing (GFDM). The high peak-to-average power ratio (PAPR) is one of the main challenges found in all MCM systems. As the output signal of the UFMC has large peaks, some distortions occur in the signal due to overshoot of the linear region of the high-power amplifier (HAP), which dramatically degrades the BER. Accordingly, it is known from several previous research studies that most proposals to reduce PAPR for the UFMC system have been difficult to implement or have required sending information in parallel to the receiver. For this reason, this paper proposes a new alternative, which is easily implemented and does not require the transmission of secondary information for PAPR reduction. This is done by applying the discrete sliding norm transform (DSNT) technique on the UFMC system, highlighting the proposed DSNT-UFMC scheme. As this previous scheme has not been addressed in any previous research work, it presents, the key contribution of this paper. The simulation results show that the proposed scheme outperforms the conventional one in terms of PAPR reduction, whose improvement reaches 94.6% using the proposed scheme.