A random filtering mapping method for PAPR reduction based on generalized frequency division multiplexing

In the paper, we propose a new method, namely Random Filtering Mapping (RFM), through which the peak-to-average power ratio (PAPR) of the Generalized frequency division multiplexing (GFDM) signal is reduced. Then, the improved signal is transmitted through the Radio Over Fiber (ROF) system of Single SideBand (SSB) modulation and optical fiber of 60Km. The simulation results show that the PAPR of the RFM-GFDM signal is about 5dB lower than the original GFDM signal. In addition, the EVM of the RFM-GFDM signal is about 0.5%–5% lower than the original GFDM. The proposed method greatly improves the performance of the GFDM signal in ROF system, which is a better choice for transmission.