An Improved OTFS Transmission Frame Structure Design for PAPR Reduction

Orthogonal time-frequency space(OTFS) is an emerging waveform design, but it suffers from PAPR problem. This paper discusses the reasons for the PAPR increase of OTFS signal in practical applications, and designs a new OTFS frame structure that flexibly adjusts the resource domain size, and analyzes the applicability of this frame structure in IoT devices and miniature low-speed devices. Finally, the simulation results show the effectiveness of the proposed frame structure in reducing PAPR and increasing energy efficiency.