BROWSE
Detail
Journal Article
Frame Partitioning and Interleaving-Based Low PAPR OTFS
Cited 0 time in 
Share 
Share
- Authors
- Kwanwoong Ryu, Hyeongwon Lee, Kwonhue Choi, Chung-Sup Kim
- Issue Date
- 2025-08
- Citation
- IEEE Wireless Communications Letters, v.14, no.8, pp.2566-2570
- ISSN
- 2162-2337
- Publisher
- IEEE
- Language
- English
- Type
- Journal Article
- Abstract
- In this letter, we propose a simple and efficient low peak-to-average power ratio (PAPR) orthogonal time frequency space (OTFS) scheme, named low PAPR (LP)-OTFS, which does not require side information or signal pre-distortion. The proposed method involves a two-step process. First, the M× N delay-Doppler (DD) domain data frame is partitioned into S sub-blocks along the Doppler axis. Each sub-block is then transformed into the delay-time (DT) domain using a reduced size, i.e., an L (=N/S )-point inverse discrete Fourier transform (IDFT) along the Doppler axis. Next, by performing signal interleaving between sub-blocks, we compensate for the reduced time-domain diversity caused by the smaller sub-block size. Through simulations, we compare the proposed LP-OTFS scheme with both the conventional OTFS and the recently proposed discrete Fourier transform spread OTFS (DFT-s-OTFS) in terms of PAPR and bit error rate (BER). The results demonstrate that the proposed scheme achieves improved BER performance and reduced PAPR. Additionally, a complexity comparison with OTFS and DFT-s-OTFS shows that our proposed method has the lowest complexity.
- KSP Keywords
- BER performance, Bit Error rate, Block size, Data frame, Delay Time, Discrete Fourier transform spread(DFT-S), Low PAPR, Peak to average Power ratio(PAPR), Pre-distortion, Sub-Blocks(SB), delay-Doppler