Reducing Peak-to-Average Power Ratio in 5G Systems through the Hybrid AGP-SLM Technique

Abstract

The imminent era of 5G mobile communication necessitates the exploration of novel modulation techniques as alternatives to the prevalent OFDM modulation technique. The pursuit of low Peak-to-Average Power Ratio (PAPR) has become a standard for 5G waveforms, aligning with the requirements of 5G and aiming to optimize power efficiency. Consequently, there is a compelling need to mitigate PAPR, making hybrid techniques an appealing choice due to their ability to harness the strengths of multiple methods without introducing spectrum side-lobes or compromising the bit error rate (BER) performance of the systems. This paper proposes a technique that combines selective mapping technique (SLM) and Active Constellation Extension (AGP) algorithms to achieve PAPR and BER reduction in OFDM systems. The proposed approach enhances PAPR reduction while concurrently maintaining BER performance, and it accomplishes this with reduced computational complexity when compared to conventional techniques.