A Novel Precoder for Peak-to-Average Power Ratio Reduction in OTFS Systems

TL;DR

This paper introduces a low-complexity iterative precoder for OTFS systems that significantly reduces PAPR by about 5 dB, outperforming existing methods while maintaining similar error rate performance.

Contribution

A novel iterative precoding technique for OTFS systems that effectively reduces PAPR with low complexity and improved performance over existing solutions.

Findings

Achieves approximately 5 dB PAPR reduction.

Outperforms state-of-the-art PAPR reduction methods.

Maintains comparable error rate performance.

Abstract

We consider the issue of high peak-to-average-power ratio (PAPR) of Orthogonal time frequency space (OTFS) modulated signals. This paper proposes a low-complexity novel iterative PAPR reduction method which achieves a PAPR reduction of roughly 5 dB when compared to a OTFS modulated signal without any PAPR compensation. Simulations reveal that the PAPR achieved by the proposed method is significantly better than that achieved by other state-of-art methods. Simulations also reveal that the error rate performance of OTFS based systems with the proposed PAPR reduction is similar to that achieved with the other state-of-art methods.