DCT/DST-based frequency modulated-OFDM

IF 4.1 3区计算机科学 Q1 COMPUTER SCIENCE, INFORMATION SYSTEMS

ICT Express Pub Date : 2025-03-10 DOI:10.1016/j.icte.2025.03.001

Gosan Noh , Wooram Shin , Kyeongpyo Kim , Eunkyung Kim

引用次数: 0

Abstract

Among the recent advancements in waveform design for wireless communication, the frequency-modulated orthogonal frequency-division multiplexing (FM-OFDM) has gained attention due to its resilience to phase noise and Doppler spread, as well as its zero-dB peak-to-average power ratio (PAPR). We propose two alternative frequency-time conversion schemes based on discrete cosine transform (DCT) and discrete sine transform (DST) that can potentially supplant discrete Fourier transform (DFT) within FM-OFDM. Extensive simulations demonstrate that FM-OFDM waveforms utilizing DCT and DST can improve link performance compared to those based on DFT. Furthermore, employing frequency-domain spreading with DCT/DST-based FM-OFDM shows additional link performance enhancements. 2024 The Korean Institute of Communications and Information Sciences. Publishing Services by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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基于DCT/ dst的调频ofdm

在无线通信波形设计的最新进展中，调频正交频分复用（FM-OFDM）由于其对相位噪声和多普勒传播的弹性以及零db峰值平均功率比（PAPR）而受到关注。我们提出了两种基于离散余弦变换（DCT）和离散正弦变换（DST）的替代频率-时间转换方案，可以潜在地取代FM-OFDM中的离散傅立叶变换（DFT）。大量的仿真表明，与基于DFT的FM-OFDM波形相比，利用DCT和DST的FM-OFDM波形可以提高链路性能。此外，采用频域扩展与基于DCT/ dst的FM-OFDM显示了额外的链路性能增强。2024韩国通信与信息科学研究所。这是一篇基于CC by-nc-nd许可（http://creativecommons.org/licenses/by-nc-nd/4.0/）的开放获取文章。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ICT Express Multiple-

CiteScore

10.20

自引率

1.90%

发文量

167

审稿时长

35 weeks

期刊介绍： The ICT Express journal published by the Korean Institute of Communications and Information Sciences (KICS) is an international, peer-reviewed research publication covering all aspects of information and communication technology. The journal aims to publish research that helps advance the theoretical and practical understanding of ICT convergence, platform technologies, communication networks, and device technologies. The technology advancement in information and communication technology (ICT) sector enables portable devices to be always connected while supporting high data rate, resulting in the recent popularity of smartphones that have a considerable impact in economic and social development.