A novel OTFS-based directional transmission scheme for airborne networks with ISAC technology

IF 4.5 3区计算机科学 Q1 COMPUTER SCIENCE, INFORMATION SYSTEMS

Computer Communications Pub Date : 2024-09-05 DOI:10.1016/j.comcom.2024.107941

Xinyu Hong, Na Lv, Xiang Wang, Zhiyuan You

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引用次数: 0

Abstract

This paper investigates the directional transmission scheme for airborne networks (ANs) with orthogonal time frequency space (OTFS) modulation, to cope with the degradations of communication performance due to the aircraft’s uncertain and high-speed mobilities. Besides showing better communication performance in high mobility scenarios such as AN, OTFS has also been verified for realizing the integrated sensing and communication (ISAC) systems. In this case, this paper proposes a sensing-assisted beam prediction method by exploiting echoes to predict the next locations of moving aircraft, solving the beam rendezvous problem at the transmitter. Besides, for the data detection problem at the receiver, this paper proposes a novel pilot placement scheme relying on the predicted delays and Dopplers, realizing accurate channel estimation with lower overheads. Simulation results show that the proposed OTFS-based directional transmission scheme can achieve reliable communication performance with a low bit error rate.

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基于 OTFS 的新型定向传输方案，用于采用 ISAC 技术的机载网络

本文研究了采用正交时频空间（OTFS）调制的机载网络（ANs）定向传输方案，以应对飞机不确定的高速移动所导致的通信性能下降。除了在 AN 等高移动性场景中显示出更好的通信性能外，OTFS 在实现集成传感和通信（ISAC）系统方面也得到了验证。在这种情况下，本文提出了一种传感辅助波束预测方法，利用回波预测移动飞机的下一个位置，解决发射机的波束会合问题。此外，针对接收器的数据检测问题，本文提出了一种新颖的先导放置方案，该方案依赖于预测的延迟和多普勒，以较低的开销实现了精确的信道估计。仿真结果表明，所提出的基于 OTFS 的定向传输方案能以较低的误码率实现可靠的通信性能。

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

Computer Communications 工程技术-电信学

CiteScore

14.10

自引率

5.00%

发文量

397

审稿时长

66 days

期刊介绍： Computer and Communications networks are key infrastructures of the information society with high socio-economic value as they contribute to the correct operations of many critical services (from healthcare to finance and transportation). Internet is the core of today''s computer-communication infrastructures. This has transformed the Internet, from a robust network for data transfer between computers, to a global, content-rich, communication and information system where contents are increasingly generated by the users, and distributed according to human social relations. Next-generation network technologies, architectures and protocols are therefore required to overcome the limitations of the legacy Internet and add new capabilities and services. The future Internet should be ubiquitous, secure, resilient, and closer to human communication paradigms. Computer Communications is a peer-reviewed international journal that publishes high-quality scientific articles (both theory and practice) and survey papers covering all aspects of future computer communication networks (on all layers, except the physical layer), with a special attention to the evolution of the Internet architecture, protocols, services, and applications.