Doppler Frequency-Offset Estimator for Multi-carrier Faster-than-Nyquist Signaling in Low-Earth-Orbit Satellite Communications

IF 1.9 4区计算机科学 Q3 TELECOMMUNICATIONS

Wireless Personal Communications Pub Date : 2024-09-12 DOI:10.1007/s11277-024-11572-8

X. H. Liang, A. J. Liu, X. Q. Gao

引用次数: 0

Abstract

As the comming of the sixth generation (6 G) era, the Low-Earth-Orbit (LEO) satellite communications are expected to provide better service for massive terminals. With the rapid increasing of users, it will make the wireless spectrum resource more scarce. In this paper, in order to improve the spectrum efficiency, Multi-carrier Faster-than-Nyquist (MFTN) signaling is applied into downlink of LEO satellite communications. Further, we have proposed a Doppler frequency offset estimator, which can minimize the performance loss of MFTN signaling in the LEO satellite channel. For reducing computation complexity, the proposed estimator has been simplified by polynomial approximation. In LEO satellite channel, simulation results demonstrated that the proposed estimator can achieve satisfied estimation performance. It is also verified that our proposed estimator can reduce transmission performance loss for MFTN with different packing factors.

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低地轨道卫星通信中多载波快于奈奎斯特信号的多普勒频率偏移估计器

随着第六代（6 G）时代的到来，低地轨道（LEO）卫星通信有望为海量终端提供更好的服务。随着用户的快速增长，无线频谱资源将变得更加稀缺。为了提高频谱效率，本文将多载波快于奈奎斯特（MFTN）信令应用于低地轨道卫星通信的下行链路。此外，我们还提出了一种多普勒频率偏移估计器，它能最大限度地减少 MFTN 信令在低地轨道卫星信道中的性能损失。为了降低计算复杂度，我们通过多项式近似简化了所提出的估计器。仿真结果表明，在低地轨道卫星信道中，所提出的估计器能达到令人满意的估计性能。仿真结果还验证了我们提出的估计器可以减少不同包装因子下 MFTN 的传输性能损失。

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

Wireless Personal Communications 工程技术-电信学

CiteScore

5.80

自引率

9.10%

发文量

663

审稿时长

6.8 months

期刊介绍： The Journal on Mobile Communication and Computing ... Publishes tutorial, survey, and original research papers addressing mobile communications and computing; Investigates theoretical, engineering, and experimental aspects of radio communications, voice, data, images, and multimedia; Explores propagation, system models, speech and image coding, multiple access techniques, protocols, performance evaluation, radio local area networks, and networking and architectures, etc.; 98% of authors who answered a survey reported that they would definitely publish or probably publish in the journal again. Wireless Personal Communications is an archival, peer reviewed, scientific and technical journal addressing mobile communications and computing. It investigates theoretical, engineering, and experimental aspects of radio communications, voice, data, images, and multimedia. A partial list of topics included in the journal is: propagation, system models, speech and image coding, multiple access techniques, protocols performance evaluation, radio local area networks, and networking and architectures. In addition to the above mentioned areas, the journal also accepts papers that deal with interdisciplinary aspects of wireless communications along with: big data and analytics, business and economy, society, and the environment. The journal features five principal types of papers: full technical papers, short papers, technical aspects of policy and standardization, letters offering new research thoughts and experimental ideas, and invited papers on important and emerging topics authored by renowned experts.