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Random pulse repetition interval (PRI) waveform arouses great interests in the field of modern radars due to its ability to alleviate range and Doppler ambiguities as well as enhance electronic counter-countermeasures (ECCM) capabilities.…

应用统计 · 统计学 2018-10-15 Jieli Zhu , Tong Zhao , Tianyao Huang , Dengfeng Zhang

In conventional colocated multiple-input multiple-output (MIMO) radars, practical waveform constraints including peak-to-average power ratio, constant or bounded modulus lead to a significant performance reduction of transmit beampattern,…

信号处理 · 电气工程与系统科学 2024-10-08 Shengyao Chen , Minghui He , Longyao Ran , Hongtao Li , Feng Xi , Sirui Tian , Zhong Liu

This paper studies a multiple intelligent reflecting surfaces (IRSs) collaborative localization system where multiple semi-passive IRSs are deployed in the network to locate one or more targets based on time-of-arrival. It is assumed that…

信息论 · 计算机科学 2024-06-18 Ziheng Zhang , Wen Chen , Qingqing Wu , Zhendong Li , Xusheng Zhu , Jingfeng Chen , Nan Cheng

Recent years have witnessed growing interest in reduced cost radar systems operating with low power. Multiple-input multiple-output (MIMO) radar technology is known to achieve high performance sensing by probing with multiple orthogonal…

信号处理 · 电气工程与系统科学 2021-12-15 Feng Xi , Nir Shlezinger , Yonina C. Eldar

This paper studies the performance of a randomly RIS-assisted multi-target localization system, in which the configurations of the RIS are randomly set to avoid high-complexity optimization. We first focus on the scenario where the number…

信息论 · 计算机科学 2023-11-21 Zhengyu Wang , Hongzheng Liu , Rujing Xiong , Fuhai Wang , Robert Caiming Qiu

Millimeter wave signals and large antenna arrays are considered enabling technologies for future 5G networks. While their benefits for achieving high-data rate communications are well-known, their potential advantages for accurate…

Multiple-input multiple-output (MIMO) radars offer higher resolution, better target detection, and more accurate target parameter estimation. Due to the sparsity of the targets in space-velocity domain, we can exploit Compressive Sensing…

信息论 · 计算机科学 2016-03-09 Azra Abtahi , M. Modarres-Hashemi , Farokh Marvasti , Foroogh S. Tabataba

In this paper, we consider the problem of Multi-Robot Path Planning (MRPP) in continuous space. The difficulty of the problem arises from the extremely large search space caused by the combinatorial nature of the problem and the continuous…

机器人学 · 计算机科学 2025-02-12 Joonyeol Sim , Joonkyung Kim , Changjoo Nam

Continuous contactless respiration monitoring of co-sleeping subjects faces a dilemma: conventional single-site multiple-input multiple-output (MIMO) radars struggle with limited angular resolution for closely spaced individuals, while…

信号处理 · 电气工程与系统科学 2026-04-15 Lang Qin , Mandong Zhang , Wenting Song , Zhiqiang Huang , Xiaoguang Liu

A novel framework to enhance the angular resolution of automotive radars is proposed. An approach to enlarge the antenna aperture using artificial neural networks is developed using a self-supervised learning scheme. Data from a high…

信号处理 · 电气工程与系统科学 2023-04-26 Ignacio Roldan , Francesco Fioranelli , Alexander Yarovoy

This paper considers the problem of multi-target detection for massive multiple input multiple output (MMIMO) cognitive radar (CR). The concept of CR is based on the perception-action cycle that senses and intelligently adapts to the…

信号处理 · 电气工程与系统科学 2021-03-03 Aya Mostafa Ahmed , Alaa Alameer Ahmad , Stefano Fortunati , Aydin Sezgin , Maria S. Greco , Fulvio Gini

The performance bounds of near-field sensing are studied for circular arrays, focusing on the impact of bandwidth and array size. The closed-form Cramer-Rao bound (CRBs) for angle and distance estimation are derived, revealing the scaling…

信息论 · 计算机科学 2024-09-04 Zhaolin Wang , Xidong Mu , Yuanwei Liu

We consider a multiple-input multiple-output (MIMO) multiple access channel (MAC), where the channel between each transmitter and the receiver is modeled by the doubly-scattering channel model. Based on novel techniques from random matrix…

信息论 · 计算机科学 2011-05-11 Jakob Hoydis , Romain Couillet , Merouane Debbah

Multi-antenna relays and intelligent reflecting surfaces (IRSs) have been utilized to construct favorable channels to improve the performance of wireless systems. A common feature between relay systems and IRS-aided systems is the two-hop…

信息论 · 计算机科学 2024-02-07 Zeyan Zhuang , Xin Zhang , Dongfang Xu , Shenghui Song

In this work, we investigate the localization of targets in the presence of multiple scattering. We focus on the often omitted scenario in which measurement data is affected by multiple scattering, and a simpler model is employed in the…

信号处理 · 电气工程与系统科学 2024-10-02 Eduardo Pérez , Sebastian Semper , Sayako Kodera , Florian Römer , Giovanni Del Galdo

Motivated by future automotive applications, we study some joint radar target detection and parameter estimation problems where the transmitter, equipped with a mono-static MIMO radar, wishes to detect multiple targets and then estimate…

信号处理 · 电气工程与系统科学 2020-09-21 Lorenzo Gaudio , Mari Kobayashi , Giuseppe Caire , Giulio Colavolpe

Rotation averaging (RA) is a fundamental problem in robotics and computer vision. In RA, the goal is to estimate a set of $N$ unknown orientations $R_{1}, ..., R_{N} \in SO(3)$, given noisy measurements $R_{ij} \sim R^{-1}_{i} R_{j}$ of a…

计算机视觉与模式识别 · 计算机科学 2023-11-29 Owen Howell , Haoen Huang , David Rosen

The mutual interference between similar radar systems can result in reduced radar sensitivity and increased false alarm rates. To address the synchronous and asynchronous interference mitigation problems in similar radar systems, we first…

信号处理 · 电气工程与系统科学 2022-08-10 Arindam Bose , Bo Tang , Wenjie Huang , Mojtaba Soltanalian , Jian Li

We propose regularized approximate message passing (RAMP), a low-complexity algorithm for discrete signal detection in overloaded multiple-input multiple-output (MIMO) systems where the number of transmit antennas exceeds the number of…

This paper investigates intelligent reflecting surface (IRS) enabled non-line-of-sight (NLoS) wireless sensing, in which an IRS is dedicatedly deployed to assist an access point (AP) to sense a target at its NLoS region. It is assumed that…

信号处理 · 电气工程与系统科学 2023-07-05 Xianxin Song , Jie Xu , Fan Liu , Tony Xiao Han , Yonina C. Eldar