Photonic-Assisted Joint Radar and Communication System Using Overlapped Spectrum for High-Resolution Ranging and High-Speed Data Transmission

IF 4.5 1区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Microwave Theory and Techniques Pub Date : 2025-04-21 DOI:10.1109/TMTT.2025.3556855

Jingxu Chen;Haikun Huang;Ruiqi Zheng;Baohang Mo;Zhenzhao Yi;Jianghai Wo;Jiejun Zhang;Xudong Wang;Xinhuan Feng;Jianping Yao

{"title":"Photonic-Assisted Joint Radar and Communication System Using Overlapped Spectrum for High-Resolution Ranging and High-Speed Data Transmission","authors":"Jingxu Chen;Haikun Huang;Ruiqi Zheng;Baohang Mo;Zhenzhao Yi;Jianghai Wo;Jiejun Zhang;Xudong Wang;Xinhuan Feng;Jianping Yao","doi":"10.1109/TMTT.2025.3556855","DOIUrl":null,"url":null,"abstract":"We propose and demonstrate a photonic-assisted joint radar and communication (JRC) system using a JRC signal with overlapped spectrum to support simultaneous wideband ranging and high-speed communications. For radar ranging, an electrical linearly-frequency-modulated (LFM) waveform is modulated on an optical carrier at a Mach-Zehnder modulator (MZM) biased at the null point to generate odd-order sidebands. By filtering out the first-order sidebands, two third-order sidebands are obtained. By beating the two sidebands at a photodetector (PD), a frequency-sextupled electrical LFM with sextupled bandwidth is generated. For wireless communications, a binary phase-shift keying (BPSK) or quadrature phase-shift keying (QPSK) signal is modulated on one of the third-order sidebands. By beating the modulated sideband with the other unmodulated sideband, a frequency upconverted wireless signal is generated. The JRC signals are radiated to free space. At the radar receiver, the echo signal is applied to another MZM where the signal is optically dechirped to extract the target information. At the communication receiver, the JRC signal is received and applied to an MZM, where the radar and the communication signals beat to generate the original communication signal. Since no local oscillator (LO) signal is employed, the system is greatly simplified. The dual functions of the system are evaluated by an experiment. For radar ranging, a wideband LFM radar signal with a 9.6-GHz bandwidth is generated, and radar ranging with a high range resolution of 2.5 cm is obtained. For wireless communication, a 4-GBaud/s BPSK and a 2-GBaud/s QPSK signal are transmitted over 20 m, with the bit error rates (BERs) of <inline-formula> <tex-math>$1.82\\times 10^{-5}$ </tex-math></inline-formula> and <inline-formula> <tex-math>$1.96\\times 10^{-5}$ </tex-math></inline-formula>, respectively, which are below the forward error correction (FEC) limit for error free communications.","PeriodicalId":13272,"journal":{"name":"IEEE Transactions on Microwave Theory and Techniques","volume":"73 9","pages":"6749-6758"},"PeriodicalIF":4.5000,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Transactions on Microwave Theory and Techniques","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10971751/","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}

引用次数: 0

Abstract

We propose and demonstrate a photonic-assisted joint radar and communication (JRC) system using a JRC signal with overlapped spectrum to support simultaneous wideband ranging and high-speed communications. For radar ranging, an electrical linearly-frequency-modulated (LFM) waveform is modulated on an optical carrier at a Mach-Zehnder modulator (MZM) biased at the null point to generate odd-order sidebands. By filtering out the first-order sidebands, two third-order sidebands are obtained. By beating the two sidebands at a photodetector (PD), a frequency-sextupled electrical LFM with sextupled bandwidth is generated. For wireless communications, a binary phase-shift keying (BPSK) or quadrature phase-shift keying (QPSK) signal is modulated on one of the third-order sidebands. By beating the modulated sideband with the other unmodulated sideband, a frequency upconverted wireless signal is generated. The JRC signals are radiated to free space. At the radar receiver, the echo signal is applied to another MZM where the signal is optically dechirped to extract the target information. At the communication receiver, the JRC signal is received and applied to an MZM, where the radar and the communication signals beat to generate the original communication signal. Since no local oscillator (LO) signal is employed, the system is greatly simplified. The dual functions of the system are evaluated by an experiment. For radar ranging, a wideband LFM radar signal with a 9.6-GHz bandwidth is generated, and radar ranging with a high range resolution of 2.5 cm is obtained. For wireless communication, a 4-GBaud/s BPSK and a 2-GBaud/s QPSK signal are transmitted over 20 m, with the bit error rates (BERs) of

$1.82\times 10^{-5}$

and

$1.96\times 10^{-5}$

, respectively, which are below the forward error correction (FEC) limit for error free communications.

查看原文本刊更多论文

基于重叠频谱的高分辨率测距和高速数据传输光子辅助联合雷达与通信系统

我们提出并演示了一种光子辅助联合雷达和通信（JRC）系统，该系统使用具有重叠频谱的JRC信号来支持同时宽带测距和高速通信。对于雷达测距，电线性调频（LFM）波形被调制在光载波上的马赫-曾德尔调制器（MZM）在零点偏置，以产生奇阶边带。通过滤除一阶边带，得到两个三阶边带。通过敲打光电探测器（PD）的两个边带，产生六倍带宽的六倍频率电LFM。对于无线通信，二相移键控（BPSK）或正交移相键控（QPSK）信号在三阶边带之一上调制。通过用另一个未调制边带敲打调制边带，产生频率上转换的无线信号。JRC信号被辐射到自由空间。在雷达接收机处，回波信号被应用到另一个MZM，在那里信号被光学解码以提取目标信息。在通信接收器处，JRC信号被接收并应用到MZM，雷达和通信信号在MZM处跳动以产生原始通信信号。由于不使用本振（LO）信号，系统大大简化。通过实验验证了系统的对偶功能。对于雷达测距，产生带宽为9.6 ghz的宽带LFM雷达信号，获得2.5 cm高距离分辨率的雷达测距。在无线通信中，一个4 gbaud /s的BPSK信号和一个2 gbaud /s的QPSK信号在20 m内传输，误码率（ber）分别为$1.82\乘以10^{-5}$和$1.96\乘以10^{-5}$，低于无差错通信的前向纠错（FEC）限制。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

IEEE Transactions on Microwave Theory and Techniques 工程技术-工程：电子与电气

CiteScore

8.60

自引率

18.60%

发文量

486

审稿时长

6 months

期刊介绍： The IEEE Transactions on Microwave Theory and Techniques focuses on that part of engineering and theory associated with microwave/millimeter-wave components, devices, circuits, and systems involving the generation, modulation, demodulation, control, transmission, and detection of microwave signals. This includes scientific, technical, and industrial, activities. Microwave theory and techniques relates to electromagnetic waves usually in the frequency region between a few MHz and a THz; other spectral regions and wave types are included within the scope of the Society whenever basic microwave theory and techniques can yield useful results. Generally, this occurs in the theory of wave propagation in structures with dimensions comparable to a wavelength, and in the related techniques for analysis and design.