Explanipedia

Scatterer Localization Using Multi-Bounce Paths Open

Yuan Liu, Linlong Wu, Xuesong Cai, M. R. Bhavani Shankar · 2025

Indoor sensing is challenging because of the multi-bounce effect, spherical wavefront, and spatial nonstationarity (SNS) of the near-field effect. This paper addresses radio-based environment sensing considering these issues. Specifically,…

Environment Reconstruction in Multi-Bounce Channels with Array Partial Blockage Open

Yuan Liu, Linlong Wu, Xuesong Cai, M. R. Bhavani Shankar · 2025

Extremely-large antenna arrays (ELAA) are important in applications requiring high angular resolution. However, a prominent issue is the spatial non-stationary (SNS) channels due to partial blockage to the ELAA. In this paper, we address t…

Joint Hybrid Beamforming and Antenna Positioning for Fluid Antenna Enabled Wideband MIMO Radar Open

Dongxu An, Jinfeng Hu, Kaizhi Ruan, Ming Li, Yiran Zhang , et al. · 2025

Massive MIMO Channel-aware Decision Fusion Aided by Reconfigurable Intelligent Surfaces Open

Domenico Ciuonzo, Alessio Zappone, Marco Di Renzo, Linlong Wu · 2025

International audience

Graph-Based Multi-Bounce Modeling and Channel Parameter Estimation for Indoor Sensing Open

Yuan Liu, Linlong Wu, Xuesong Cai, Bhavani Shankar M. R. · 2025

Indoor sensing is challenging because of the multi-bounce effect, spherical wavefront, and spatial nonstationarity (SNS) of the near-field effect. This paper addresses radio-based environment sensing considering these issues. Specifically,…

On the Performance Analysis of Momentum Method: A Frequency Domain Perspective Open

Xianliang Li, Jun Luo, Zhiwei Zheng, Hanxiao Wang, Luo Li , et al. · 2024

Momentum-based optimizers are widely adopted for training neural networks. However, the optimal selection of momentum coefficients remains elusive. This uncertainty impedes a clear understanding of the role of momentum in stochastic gradie…

Hybrid Precoder Design for Angle-of-Departure Estimation With Limited-Resolution Phase Shifters Open

Huiping Huang, Musa Furkan Keskin, Henk Wymeersch, Xuesong Cai, Linlong Wu , et al. · 2024

Hybrid analog-digital beamforming stands out as a key enabler for future communication systems with a massive number of antennas. In this paper, we investigate the hybrid precoder design problem for angle-of-departure (AoD) estimation, whe…

Enhanced Jamming Suppression in Colocated MIMO Radar with Fluid Antenna Array Open

Linlong Wu, Bhavani Shankar M. R., Wei Liu, Björn Ottersten · 2024

peer reviewed

Joint Power Allocation and Beam Scheduling in Beam-Hopping Satellites: A Two-Stage Framework With a Probabilistic Perspective Open

Lin Chen, Linlong Wu, Eva Lagunas, Anyue Wang, Lei Lei , et al. · 2024

peer reviewed

RIS-Aided Wideband Holographic DFRC Open

Tong Wei, Linlong Wu, Kumar Vijay Mishra, Bhavani Shankar M. R. · 2024

To enable non-line-of-sight (NLoS) sensing and communications, dual-function radar-communications (DFRC) systems have recently proposed employing reconfigurable intelligent surface (RIS) as a reflector in wireless media. However, in the de…

RIS-Aided Radar for Target Detection: Clutter Region Analysis and Joint Active-Passive Design Open

Zhuang Xie, Linlong Wu, Jiahua Zhu, Marco Lops, Xiaotao Huang , et al. · 2024

peer reviewed

Cross Ambiguity Function Shaping of Cognitive MIMO Radar: A Synergistic Approach to Antenna Placement and Waveform Design Open

Zhuang Xie, Linlong Wu, Xiaotao Huang, Chongyi Fan, Jiahua Zhu , et al. · 2024

peer reviewed

Hybrid Precoder Design for Angle-of-Departure Estimation with Limited-Resolution Phase Shifters Open

Huiping Huang, Musa Furkan Keskin, Henk Wymeersch, Xuesong Cai, Linlong Wu , et al. · 2023

Hybrid analog-digital beamforming stands out as a key enabler for future communication systems with a massive number of antennas. In this paper, we investigate the hybrid precoder design problem for angle-of-departure (AoD) estimation, whe…

Vortex Wavefront FMCW ISAC Model: A Blender-Based Evaluation Open

Yuan Liu, Wen-Xuan Long, Rui Chen, Linlong Wu, Mallikarjun Shankar · 2023

Integrated sensing and Communication (ISAC) systems are key enablers for 6G networks, offering promising applications in indoor scenarios, such as high-accuracy localization, tracking, imaging, augmented senses, and gesture recognition. In…

Multi-IRS-Aided Doppler-Tolerant Wideband DFRC System Open

Tong Wei, Linlong Wu, Kumar Vijay Mishra, Mallikarjun Shankar · 2023

peer reviewed

Next-Generation IoT Networks: Integrated Sensing Communication and Computation Open

Kunwar Pritiraj Rajput, Linlong Wu, Mallikarjun Shankar · 2023

To enable the exponential expansion of Internet of Things (IoT) applications, IoT devices must gather and transmit massive amounts of data to the server for further processing. By employing the same signals for both radar sensing and data …

RIS-Aided Wideband Holographic DFRC Open

Tong Wei, Linlong Wu, Kumar Vijay Mishra, Mallikarjun Shankar · 2023

To enable non-line-of-sight (NLoS) sensing and communications, dual-function radar-communications (DFRC) systems have recently proposed employing reconfigurable intelligent surface (RIS) as a reflector in wireless media. However, in the de…

Sparse Array Design for Dual-Function Radar-Communications System Open

Huiping Huang, Linlong Wu, Bhavani Shankar, Abdelhak M. Zoubir · 2023

The problem of sparse array design for dual-function radar-communications is investigated. Our goal is to design a sparse array which can simultaneously shape desired beam responses and serve multiple downlink users with the required signa…

Relative Entropy-Based Constant-Envelope Beamforming for Target Detection in Large-Scale MIMO Radar With Low-Resoultion ADCs Open

Ziyang Cheng, Linlong Wu, Bowen Wang, Julan Xie, Huiyong Li · 2023

Hybrid digital/analog architecture and low-resolution analog-to-digital/digital-to-analog converters (ADCs /DACs) are two low-cost implementations for large-scale millimeter wave (mmWave) systems. In this paper, we investigate the problem …

Sparse Array Design for Dual-Function Radar-Communications System Open

Huiping Huang, Linlong Wu, Bhavani Shankar, Abdelhak M. Zoubir · 2023

The problem of sparse array design for dual-function radar-communications is investigated. Our goal is to design a sparse array which can simultaneously shape desired beam responses and serve multiple downlink users with the required signa…

Constant-Modulus Waveform Design With Polarization-Adaptive Power Allocation in Polarimetric Radar Open

Linlong Wu, Xu Cheng, Huiping Huang, Domenico Ciuonzo, Bhavani Shankar , et al. · 2023

peer reviewed

Joint Waveform and Receive Filter Design for Pulse Compression in Weather Radar Systems Open

Mohammad Alaee–Kerahroodi, Linlong Wu, Ehsan Raei, Mallikarjun Shankar · 2023

peer reviewed

The Next Generation of Beam Hopping Satellite Systems: Dynamic Beam Illumination With Selective Precoding Open

Lin Chen, Vu Nguyen Ha, Eva Lagunas, Linlong Wu, Symeon Chatzinotas , et al. · 2022

peer reviewed

Improving Pulse-Compression Weather Radar via the Joint Design of Subpulses and Extended Mismatch Filter Open

Linlong Wu, Mohammad Alaee‐Kerahroodi, Mallikarjun Shankar · 2022

Pulse compression can enhance both the performance in range resolution and sensitivity for weather radar. However, it will introduce the issue of high sidelobes if not delicately implemented. Motivated by this fact, we focus on the pulse c…

Hybrid Beamforming in mmWave Dual-Function Radar-Communication Systems: Models, Technologies, and Challenges Open

Ziyang Cheng, Linlong Wu, Bowen Wang, Bhavani Shankar, Bin Liao , et al. · 2022

As a promising technology in beyond-5G (B5G) and 6G, dual-function radar-communication (DFRC) aims to ensure both radar sensing and communication on a single integrated platform with unified signaling schemes. To achieve accurate sensing a…

Simultaneous Active-Passive Beamformer Design in IRS-Enabled Multi-Carrier DFRC System Open

Tong Wei, Linlong Wu, Kumar Vijay Mishra, Shankar M. R. Bhavani · 2022

peer reviewed

Multi-IRS-Aided Doppler-Tolerant Wideband DFRC System Open

Tong Wei, Linlong Wu, Kumar Vijay Mishra, Mallikarjun Shankar · 2022

Intelligent reflecting surface (IRS) is recognized as an enabler of future dual-function radar-communications (DFRC) by improving spectral efficiency, coverage, parameter estimation, and interference suppression. Prior studies on IRS-aided…

IRS-Aided Wideband Dual-Function Radar-Communications with Quantized Phase-Shifts Open

Tong Wei, Linlong Wu, Kumar Vijay Mishra, Mallikarjun Shankar · 2022

Intelligent reflecting surfaces (IRS) are increasingly considered as an emerging technology to assist wireless communications and target sensing. In this paper, we consider the quantized IRS-aided wideband dual-function radar-communication…

Recurrent Design of Probing Waveform for Sparse Bayesian Learning Based DOA Estimation Open

Linlong Wu, Jisheng Dai, Bhavani Shankar M. R., Ruizhi Hu, Björn Ottersten · 2022

Direction-of-arrival (DOA) estimation can be represented as a sparse signal recovery problem and effectively solved by sparse Bayesian learning (SBL). For the DOA estimation in active sensing, the SBL-based estimation error is related to t…

Joint waveform and precoding design for coexistence of MIMO radar and MU‐MISO communication Open

Tong Wei, Linlong Wu, Bhavani Shankar M. R. · 2022

The joint design problem for the coexistence of multiple‐input multiple‐output (MIMO) radar and multi‐user multiple‐input‐single‐output (MU‐MISO) communication is investigated. Different from the conventional design schemes, which require …

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