MIMO-OFDM Imaging Using Shared Time and Bandwidth

IF 6.3 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Open Journal of the Communications Society Pub Date : 2025-03-26 DOI:10.1109/OJCOMS.2025.3573583

Mehmet Yazgan;Hüseyin Arslan;Stavros Vakalis

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引用次数: 0

Abstract

Multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) radar imaging has emerged as a promising approach for high-resolution environmental sensing, particularly in spectrally congested wireless environments. This paper presents a novel MIMO-OFDM imaging framework that enables simultaneous transmission from multiple antennas without relying on conventional time-division multiplexing (TDM) or frequency-division multiplexing (FDM) techniques. The proposed method preserves the standard OFDM communication waveform, eliminating the need for additional interference mitigation strategies. Two transmit (Tx) and two receive (Rx) antennas operate within a 400 MHz bandwidth at carrier frequencies of 2.4 GHz and 2.415 GHz, each transmitting independently modulated quadrature amplitude modulation (QAM) symbols. Theoretical analysis, simulations, and experimental measurements demonstrate that high-fidelity object reconstruction is achieved despite overlapping spectral and temporal resources. The results validate the feasibility of this approach for efficient spectral and temporal resource utilization in wireless sensing applications, making it favorable for existing and upcoming wireless applications with a massive number of active sensing devices, such as joint-radar and communications (JRC) and the Internet of Everything (IoE).

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使用共享时间和带宽的MIMO-OFDM成像

多输入多输出（MIMO）正交频分复用（OFDM）雷达成像已经成为高分辨率环境传感的一种有前途的方法，特别是在频谱拥挤的无线环境中。本文提出了一种新的MIMO-OFDM成像框架，该框架可以实现多天线同时传输，而无需依赖传统的时分复用（TDM）或频分复用（FDM）技术。该方法保留了标准OFDM通信波形，消除了额外的干扰缓解策略的需要。两个发射（Tx）和两个接收（Rx）天线在400 MHz带宽内工作，载波频率为2.4 GHz和2.415 GHz，每个天线发射独立调制的正交调幅（QAM）符号。理论分析、模拟和实验测量表明，尽管光谱和时间资源重叠，但仍然可以实现高保真的目标重建。结果验证了该方法在无线传感应用中有效利用频谱和时间资源的可行性，有利于现有和未来具有大量主动传感设备的无线应用，如联合雷达和通信（JRC）和万物互联（IoE）。

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 Open Journal of the Communications Society Multiple-

CiteScore

13.70

自引率

3.80%

发文量

审稿时长

10 weeks

期刊介绍： The IEEE Open Journal of the Communications Society (OJ-COMS) is an open access, all-electronic journal that publishes original high-quality manuscripts on advances in the state of the art of telecommunications systems and networks. The papers in IEEE OJ-COMS are included in Scopus. Submissions reporting new theoretical findings (including novel methods, concepts, and studies) and practical contributions (including experiments and development of prototypes) are welcome. Additionally, survey and tutorial articles are considered. The IEEE OJCOMS received its debut impact factor of 7.9 according to the Journal Citation Reports (JCR) 2023. The IEEE Open Journal of the Communications Society covers science, technology, applications and standards for information organization, collection and transfer using electronic, optical and wireless channels and networks. Some specific areas covered include: Systems and network architecture, control and management Protocols, software, and middleware Quality of service, reliability, and security Modulation, detection, coding, and signaling Switching and routing Mobile and portable communications Terminals and other end-user devices Networks for content distribution and distributed computing Communications-based distributed resources control.