DFT-Spread OFDM-Based MIMO Joint Communication and Sensing System

IF 5.3 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Open Journal of Vehicular Technology Pub Date : 2025-03-10 DOI:10.1109/OJVT.2025.3549918

Max Schurwanz;Jan Mietzner;Peter Adam Hoeher

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Abstract

This paper introduces a joint communication and sensing (JCAS) system design that employs a discrete Fourier transform (DFT)-spread orthogonal frequency-division multiplexing (OFDM) waveform integrated with a multiple-input multiple-output (MIMO) antenna array. This system has been designed with the specific requirements of future remotely piloted or autonomous aircraft systems in urban air mobility (UAM) settings in mind. The objective is to provide high-bandwidth data transmission in conjunction with precise radar sensing, thereby enhancing situational awareness and facilitating efficient spectrum usage. The paper makes a number of significant contributions to the field, including the development of a flexible MIMO DFT-spread OFDM system model and the introduction of a phase compensation term for comprehensive direction-of-arrival estimation. Additionally, the effects of non-linear power amplifiers on system efficacy are analyzed through detailed simulations, providing a rigorous evaluation of the proposed design's practicality and resilience. The numerical analysis establishes a framework for the design of a JCAS system for UAM, taking into account the influence of realistic electronic components and the respective performance requirements for communication and sensing.

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基于DFT-Spread ofdm的MIMO联合通信与传感系统

本文介绍了一种采用离散傅立叶变换(DFT)-扩展正交频分复用（OFDM）波形与多输入多输出（MIMO）天线阵列集成的联合通信与传感（JCAS）系统设计。该系统的设计考虑了未来城市空中交通（UAM）环境中远程驾驶或自主飞机系统的具体要求。目标是提供高带宽数据传输，结合精确的雷达传感，从而增强态势感知，促进有效的频谱使用。本文在该领域做出了许多重要贡献，包括开发了一种灵活的MIMO DFT-spread OFDM系统模型，并引入了相位补偿项用于综合到达方向估计。此外，通过详细的仿真分析了非线性功率放大器对系统效率的影响，对所提出的设计的实用性和弹性进行了严格的评估。数值分析为UAM的JCAS系统设计建立了一个框架，该框架考虑了实际电子元件的影响以及通信和传感各自的性能要求。

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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