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The frequency-diverse array (FDA) offers a time-varying beamforming capability without the use of phase shifters. The autoscanning property is achieved by applying a frequency offset between the antennas. This paper analyzes the performance…

信号处理 · 电气工程与系统科学 2025-02-13 Marcin Wachowiak , André Bourdoux , Sofie Pollin

A novel frequency diverse array (FDA)-assisted secure transmission framework is proposed, which leverages additional frequency offsets to enhance physical layer security. Specifically, an FDA-assisted wiretap channel is considered, where…

信号处理 · 电气工程与系统科学 2025-04-15 Zhenqiao Cheng , Chongjun Ouyang , Xingqi Zhang

Current literature show that frequency diverse arrays (FDAs) are able of producing range-angle-dependent and time-variant transmit beampatterns, but the resulting time and range dependencies and their characteristics are still not well…

信号处理 · 电气工程与系统科学 2022-12-22 Wenkai Jia , Andreas Jakobsson , Wen-Qin Wang

This paper presents a performance comparison of various MIMO radar multiplexing approaches where the increasing number of transmitters adversely affects the dynamic range of the resultant MIMO system. The investigated multiplexing…

信号处理 · 电气工程与系统科学 2024-08-27 Aitor Correas-Serrano , Nikita Petrov , Maria Gonzalez-Huici , Alexander Yarovoy

The existence of multipath brings extra "looks" of targets. This paper considers the extended target detection problem with a narrow band Multiple-Input Multiple-Output(MIMO) radar in the presence of multipath from the view of…

信号处理 · 电气工程与系统科学 2020-09-29 Zhou Xu , Chongyi Fan , Jian Wang , Xiaotao Huang

Frequency diverse (FD) radar waveforms are attractive in radar research and practice. By combining two typical FD waveforms, the frequency diverse array (FDA) and the stepped-frequency (SF) pulse train, we propose a general FD waveform…

信息论 · 计算机科学 2016-03-29 Yimin Liu , Le Xiao , Xiqin Wang , Arye Nehorai

Algorithms for mutual interference mitigation and object parameter estimation are a key enabler for automotive applications of frequency-modulated continuous wave (FMCW) radar. In this paper, we introduce a signal separation method to…

信号处理 · 电气工程与系统科学 2024-10-03 Mate Toth , Erik Leitinger , Klaus Witrisal

This paper addresses the problem of detecting a moving target embedded in Gaussian noise with an unknown covariance matrix for frequency diverse array multiple-input multiple-output (FDA-MIMO) radar. To end it, assume that obtaining a set…

信号处理 · 电气工程与系统科学 2024-03-22 Ping Li , Bang Huang , Wen-Qin Wang

In this paper, we introduce a novel algorithm that can dramatically reduce the number of antenna elements needed to accurately predict the direction of arrival (DOA) for multiple input multiple output (MIMO) radar. The new proposed…

信号处理 · 电气工程与系统科学 2020-09-16 Udaya Sampath K. P. Miriya Thanthrige , Aya Mostafa Ahmed , Aydin Sezgin

Distributed phased Multiple-Input Multiple-Output (phased-MIMO) radar systems have attracted wide attention in target detection and tracking. However, the phase-shifting circuits in phased subarrays contribute to high power consumption and…

信号处理 · 电气工程与系统科学 2025-04-18 Qian Li , Ziang Yang , Dou Li , Hongliang Zhang

Integrated sensing and communication (ISAC) has been envisioned as a prospective technology to enable ubiquitous sensing and communications in next-generation wireless networks. In contrast to existing works on reconfigurable intelligent…

信息论 · 计算机科学 2024-10-02 Hanyu Yang , Shiqi Gong , Heng Liu , Chengwen Xing , Nan Zhao , Dusit Niyato

Multiple-input multiple-output (MIMO) radar offers several performance and flexibility advantages over traditional radar arrays. However, high angular and Doppler resolutions necessitate a large number of antenna elements and the…

信号处理 · 电气工程与系统科学 2025-09-11 Chandrashekhar Rai , Himali Singh , Arpan Chattopadhyay

Distributed MIMO radar is known to achieve superior sensing performance by employing widely separated antennas. However, it is challenging to implement a low-complexity distributed MIMO radar due to the complex operations at both the…

信号处理 · 电气工程与系统科学 2023-02-17 Yikun Xiang , Feng Xi , Shengyao Chen

Distributed phased arrays based multiple-input multiple-output (DPA-MIMO) is a newly introduced architecture that enables both spatial multiplexing and beamforming while facilitating highly reconfigurable hardware implementation in…

信息论 · 计算机科学 2020-08-21 Yu Zhang , Yiming Huo , Dongming Wang , Xiaodai Dong , Xiaohu You

A foremost task in frequency diverse array multiple-input multiple-output (FDA-MIMO) radar is to efficiently obtain the target signal in the presence of interferences. In this paper, we employ a novel "low-rank + low-rank + sparse"…

信号处理 · 电气工程与系统科学 2021-01-25 Qi Liu , Jingwei Xu , Zhi Ding , Hing Cheung So

Multiple-input, multiple-output (MIMO) technology provides high data rate and enhanced QoS for wireless com- munications. Since the benefits from MIMO result in a heavy computational load in detectors, the design of low-complexity…

硬件体系结构 · 计算机科学 2015-03-17 Ni-Chun Wang , Ezio Biglieri , Kung Yao

The idea of frequency diverse array (FDA) has been invigorated in the recent years by supposing to have the ability of stopping the electromagnetic wave propagation and producing secretive direct connections between distant points. However,…

信号处理 · 电气工程与系统科学 2022-01-12 Mahdi Fartookzadeh

Multiple input multiple output (MIMO) system transmission is a popular diversity technique to improve the reliability of a communication system where transmitter, communication channel and receiver are the important elements. Data…

信号处理 · 电气工程与系统科学 2020-05-06 Subrato Bharati , Prajoy Podder , Niketa Gandhi , Ajith Abraham

Covert communication in wireless networks ensures that transmissions remain undetectable to adversaries, making it a potential enabler for privacy and security in sensitive applications. However, to meet the high performance and…

信号处理 · 电气工程与系统科学 2024-11-26 Fatemeh Lotfi , Stefan Roth , Anas Chaaban , Aydin Sezgin

The potentials of automotive radar for autonomous driving have not been fully exploited. We present a multi-input multi-output (MIMO) radar transmit and receive signal processing chain, a knowledge-aided approach exploiting the radar domain…

信号处理 · 电气工程与系统科学 2021-11-03 Ruxin Zheng , Shunqiao Sun , David Scharff , Teresa Wu