@inproceedings{979586dd0bf341e288b401e52b648fe7,
title = "A New Design of Interleaved DFT-s-OFDM against Power Amplifier Non-Linearity",
abstract = "The non-linearity of power amplifiers (PAs) is a major challenge in satellite communications and high-frequency bands. Traditionally, discrete fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) uses localized subcarrier mapping, which induces a high peak-to-average power ratio (PAPR) and obstructs the efficient operation of the PA. In this paper, we propose an interleaved mapping based DFT-s-OFDM with data length extension to reduce PAPR. To overcome the unrealistic constraints in interleaved mapping, where the occupied subcarriers must be a divisor of the total, we introduce a trans-formation method based on time-domain waveform invariance. Furthermore, we provide its equivalent frequency-domain matrix representation. The constructed waveform reduces PAPR and simultaneously mitigates inter-carrier interference (ICI) caused by non-linearity, effectively achieving resistance to PA non-linearity. Simulations show that our method achieves a gain of up to 1.6 dB in PAPR and 2.4 dB in block error rate (BLER) compared to localized mapping.",
keywords = "DFT-s-OFDM, PAPR, Power amplifier, subcarrier mapping",
author = "Zhehan Zhang and Neng Ye and Jianbo Liu and Sirui Miao and Wenjia Liu and Juan Liu and Xiaolin Hou",
note = "Publisher Copyright: {\textcopyright} 2025 IEEE.; 2025 IEEE Global Communications Conference, GLOBECOM 2025 ; Conference date: 08-12-2025 Through 12-12-2025",
year = "2025",
doi = "10.1109/GLOBECOM59602.2025.11432031",
language = "English",
series = "Proceedings - IEEE Global Communications Conference, GLOBECOM",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "2072--2077",
booktitle = "GLOBECOM 2025 - 2025 IEEE Global Communications Conference",
address = "United States",
}