Wavelet-Based Three-Dimensional OTFS With Dual-Mode Index Modulation

IF 3.7 3区计算机科学 Q2 TELECOMMUNICATIONS

IEEE Communications Letters Pub Date : 2025-04-02 DOI:10.1109/LCOMM.2025.3557036

Zhenxing Chen;Si Ouyang

引用次数: 0

Abstract

In this letter, we propose a new transmission scheme for the next-generation wireless communications called wavelet-based three-dimensional orthogonal time frequency space with dual-mode index modulation (W-3D-OTFS-DM-IM). To enhance the spectral efficiency, the transmitted information bits are mapped into the OTFS frame in the delay-doppler domain using a dual-mode index modulation with 3D signal constellations. The wavelet transform instead of the conventional Fourier transform is applied to achieve OTFS modulation for reduction of complexity and improvement of error performance. The Mallat algorithm is exploited to form the wavelet transform matrix. Simulation results show that the proposed W-3D-OTFS-DM-IM has obviously better bit error rate (BER) performance and spectral efficiency than the reference systems in the high-mobility communication scenarios.

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基于双模折射率调制的小波三维OTFS

在这封信中，我们提出了一种新的下一代无线通信传输方案，称为基于小波的三维正交时频空间双模指数调制（W-3D-OTFS-DM-IM）。为了提高频谱效率，利用三维信号星座的双模折射率调制将传输的信息位映射到延迟多普勒域的OTFS帧中。采用小波变换代替传统的傅立叶变换实现OTFS调制，降低了调制复杂度，提高了误差性能。利用Mallat算法形成小波变换矩阵。仿真结果表明，在高移动通信场景下，W-3D-OTFS-DM-IM具有明显优于参考系统的误码率性能和频谱效率。

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

IEEE Communications Letters 工程技术-电信学

CiteScore

8.10

自引率

7.30%

发文量

590

审稿时长

2.8 months

期刊介绍： The IEEE Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of communication over different media and channels including wire, underground, waveguide, optical fiber, and storage channels. Both theoretical contributions (including new techniques, concepts, and analyses) and practical contributions (including system experiments and prototypes, and new applications) are encouraged. This journal focuses on the physical layer and the link layer of communication systems.