Low Complexity PAPR Reduction Scheme for UFMC System Based on L2-by-3

Universal Filtered MultiCarrier (UFMC) waveform has emerged as a promising choice for Multi-Carrier Modulation (MCM) within fifth-generation (5G) systems. Its appeal lies in its ability to offer a lower Bit Error Rate (BER) and reduced latency compared to alternative waveforms. A significant challenge common to all MCM systems is the high Peak-to-Average Power Ratio (PAPR). UFMC signals tend to exhibit substantial peaks, leading to distortions when they surpass the linear range of the high-power amplifier, consequently causing a notable deterioration in BER. Numerous past research studies have attempted to address this issue by reducing PAPR for UFMC systems. However, these solutions often proved challenging to implement, overly complex, or necessitated parallel information transmission to the receiver. In light of these challenges, this paper presents an innovative alternative approach that can be easily implemented without the need for secondary information transfer to mitigate PAPR. This method involves applying the L
2-
by-3 technique belonging to the Discrete Sliding Norm Transform (DSNT) to the UFMC system. Simulation results indicate that the proposed approach surpasses most other methods in terms of PAPR reduction, achieving improvements of up to 60%.