基于 CSS 的低地球轨道卫星物联网非正交下行链路传输

IF 4.6 3区计算机科学 Q1 COMPUTER SCIENCE, INFORMATION SYSTEMS

IEEE Wireless Communications Letters Pub Date : 2024-09-09 DOI:10.1109/LWC.2024.3456249

Yuhao Ye;Jianpeng Ma;Shun Zhang;Octavia A. Dobre

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引用次数: 0

摘要

随着物联网（IoT）网络大规模接入的发展，长距离传输和并发技术备受关注。在这封信中，我们重点研究了采用啁啾扩频（CSS）技术的并发低地轨物联网网络。我们提出了一种结合了 CSS 特性的新型连续干扰消除（SIC）算法。与传统的 SIC 相比，我们提出的算法计算复杂度更低。此外，我们还推导出了误码率 (BER) 性能的闭式表达式。最后，分析和数值结果都证实了与传统 SIC 相比的近似误码率性能，并进一步研究了系统参数对误码率性能的影响。

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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Non-Orthogonal Downlink Transmission for CSS-Based LEO Satellite IoT

With the development of massive access in Internet of Things (IoT) networks, long distance transmission and concurrent techniques have attracted much attention. In this letter, we focus on a concurrent low-earth-orbit IoT network with a chirp spread spectrum (CSS) technique. A new successive interference cancelation (SIC) algorithm that incorporates the CSS properties is proposed. In contrast to the conventional SIC, our proposed algorithm provides less computational complexity. Furthermore, we derive the closed-form expressions for the bit error rate (BER) performance. Finally, both analytical and numerical results substantiate the proximate BER performance compared with the conventional SIC and further investigate the impacts of system parameters on the BER performance.

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来源期刊

IEEE Wireless Communications Letters Engineering-Electrical and Electronic Engineering

CiteScore

12.30

自引率

6.30%

发文量

481

期刊介绍： IEEE Wireless Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of wireless communications. 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 wireless communication systems.