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Zak-OTFS is modulation scheme where signals are formed in the delay-Doppler (DD) domain, converted to the time domain (DD) for transmission and reception, then returned to the DD domain for processing. We describe how to use the same…

信号处理 · 电气工程与系统科学 2025-09-30 Nishant Mehrotra , Sandesh Rao Mattu , Saif Khan Mohammed , Ronny Hadani , Robert Calderbank

Integrated sensing and communication improves the design of systems by combining sensing and communication functions for increased efficiency, accuracy, and cost savings. The optimal integration requires understanding the trade-off between…

信息论 · 计算机科学 2023-02-13 Geon Choi , Namyoon Lee

This paper investigates joint device identification, channel estimation, and symbol detection for LEO satellite-enabled grant-free random access systems, specifically targeting scenarios where remote Internet-of-Things (IoT) devices operate…

信息论 · 计算机科学 2024-12-31 Boxiao Shen , Yongpeng Wu , Wenjun Zhang , Symeon Chatzinotas , Björn Ottersten

Radar has been widely used in military, security, and rescue. Metamaterial cloak is employed in stealth targets to evade radar detection. Hence modern radar should be reconfigurable at multi-bands for detecting stealth targets, which might…

仪器与探测器 · 物理学 2016-02-16 Weiwen Zou , Hao Zhang , Xin Long , Siteng Zhang , Yuanjun Cui , Jianping Chen

In this paper, a low-cost monopulse receiver with an enhanced direction of arrival (DoA) estimation accuracy via deep neural network (DNN) is proposed. The entire system is composed of a 4-element patch array, a fully planar symmetrical…

信号处理 · 电气工程与系统科学 2024-11-28 Hanxiang Zhang , Saeed Zolfaghary Pour , Hao Yan , Powei Liu , Bayaner Arigong

In this paper, we propose a novel pulse shaping design for single-carrier integrated sensing and communication (ISAC) transmission. Due to the communication information embedded in the ISAC signal, the resulting auto-correlation function…

信号处理 · 电气工程与系统科学 2024-05-08 Zihan Liao , Fan Liu , Shuangyang Li , Yifeng Xiong , Weijie Yuan , Marco Lops

Spectral Doppler ultrasound imaging allows visualizing blood flow by estimating its velocity distribution over time. Duplex ultrasound is a modality in which an ultrasound system is used for displaying simultaneously both B-mode images and…

信息论 · 计算机科学 2018-08-03 Regev Cohen , Yonina C. Eldar

We investigate the problem of a monostatic pulse-Doppler radar transceiver trying to detect targets, sparsely populated in the radar's unambiguous time-frequency region. Several past works employ compressed sensing (CS) algorithms to this…

信息论 · 计算机科学 2013-09-24 Omer Bar-Ilan , Yonina C. Eldar

Sequential estimation of the delay and Doppler parameters for sub-Nyquist radars by analog-to-information conversion (AIC) systems has received wide attention recently. However, the estimation methods reported are AIC-dependent and have…

信息论 · 计算机科学 2017-01-17 Shengyao Chen , Feng Xi , Zhong Liu

In this work, we investigate the performance of a dual-hop multiple relays system consisting of mixed Radio-Frequency (RF)/Free Space Optical (FSO) channels. The RF channels are subject to Rayleigh fading while the optical links experience…

信号处理 · 电气工程与系统科学 2019-01-21 Elyes Balti , Brian K. Johnson

The recently proposed orthogonal time frequency space (OTFS) modulation multiplexes data symbols in the delay-Doppler (DD) domain. Since the range and velocity, which can be derived from the delay and Doppler shifts, are the parameters of…

信号处理 · 电气工程与系统科学 2023-06-21 Kecheng Zhang , Weijie Yuan , Shuangyang Li , Fan Liu , Feifei Gao , Pingzhi Fan , Yunlong Cai

This paper examines the separation of wireless communication and radar signals, thereby guaranteeing cohabitation and acting as a panacea to spectrum sensing. First, considering that the channel impulse response was known by the receivers…

信息论 · 计算机科学 2023-02-15 Christantus O. Nnamani , Mathini Sellathurai

A renaissance in radar-based sensing for mobile robotic applications is underway. Compared to cameras or lidars, millimetre-wave radars have the ability to `see' through thin walls, vegetation, and adversarial weather conditions such as…

机器人学 · 计算机科学 2025-04-30 Cedric Le Gentil , Leonardo Brizi , Daniil Lisus , Xinyuan Qiao , Giorgio Grisetti , Timothy D. Barfoot

A Doppler radar is a device that employs the Doppler effect to estimate the radial velocity of a moving target at a distance. Traditional radars are based on a classical description of the electromagnetic radiation, but in principle their…

量子物理 · 物理学 2024-11-22 Rongyu Wei , Francesco Albarelli , Jun Li , Vittorio Giovannetti

Future radar systems are expected to use waveforms of a high bandwidth, where the main advantage is an improved range resolution. In this paper, a technique to design robust wideband waveforms for a Multiple-Input-Single-Output system is…

应用统计 · 统计学 2016-11-17 Ashkan Panahi , Marie Ström , Mats Viberg

This paper presents a novel RF circuit architecture for self-interference cancellation in inband full-duplex radio transceivers. The developed canceller is able to provide wideband cancellation with waveform bandwidths in the order of 100…

信息论 · 计算机科学 2016-11-17 Timo Huusari , Yang-Seok Choi , Petteri Liikkanen , Dani Korpi , Shilpa Talwar , Mikko Valkama

We consider a bistatic configuration with a stationary transmitter transmitting unknown waveforms of opportunity and a moving receiver, and present a Deep Learning (DL) framework for passive synthetic aperture radar (SAR) imaging. Existing…

信号处理 · 电气工程与系统科学 2019-06-05 Bariscan Yonel , Eric Mason , Birsen Yazici

The integration of communication and sensing functions within mmWave systems has gained attention due to the potential for enhanced passive sensing and improved communication reliability. State-of-the-art techniques separate these two…

信号处理 · 电气工程与系统科学 2025-09-23 Heyu Guo , Ruiyi Shen , Florian Kosterhon , Yasaman Ghasempour

Networks in 5G and beyond utilize millimeter wave (mmWave) radio signals, large bandwidths, and large antenna arrays, which bring opportunities in jointly localizing the user equipment and mapping the propagation environment, termed as…

信号处理 · 电气工程与系统科学 2022-08-23 Yu Ge , Ossi Kaltiokallio , Hui Chen , Fan Jiang , Jukka Talvitie , Mikko Valkama , Lennart Svensson , Henk Wymeersch

We address the challenge of spectral sharing between a statistical multiple-input multiple-output (MIMO) radar and an in-band full-duplex (IBFD) multi-user MIMO (MU-MIMO) communications system operating simultaneously in the same frequency…

信息论 · 计算机科学 2024-03-29 Jiawei Liu , Kumar Vijay Mishra , Mohammad Saquib