Orthogonal Time Frequency Space is a method used for modulation operating in the Delay-Doppler domain that has garnered significant interest in wireless communications research due to its robustness in high-speed applications and its ability to maintain channel invariance. Integrating OTFS into an existing Orthogonal Frequency Division Multiplexing (OFDM) scheme can also result in cost savings during installation. Previous research has shown that OFDM based on Fractional Fourier transform (FrFT) outperforms traditional OFDM by effectively reducing the peak-to-average power ratio (PAPR). In particular., the weighted -FrFT and its extended version., the multi-weighted - Fr Ft.,have been shown to be effective in mitigating P APR. In this paper., we propose an OFDM scheme based on 8-WFrFT to improve the P APR of the OTFS system. The effectiveness of the proposed scheme is assessed via simulation and contrasted with that of 4- WFr FT. The results reveal that the proposed scheme significantly decreases the P APR of the OTFS system by approximately 3 dB compared to 4-WFrFT., while upholding a reasonable computational complexity. This enhancement in P APR reduction may contribute to improved system performance and energy efficiency.