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Related papers: LiDAR-Aided Millimeter-Wave Range Extension using …

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Millimetre wave (mm-wave) communication is considered as one of the most important enablers for the fifth generation communication (5G) system to support data rate of Gbps and above. In some scenarios, it is crucial to maintain a line of…

Information Theory · Computer Science 2017-06-05 Yinan Qi , Mythri Hunukumbure , Yue Wang

The intelligent reflecting surface (IRS) technology has recently attracted a lot of interest in wireless communications research. An IRS consists of passive reflective elements capable of tuning the phase, amplitude, frequency and…

Signal Processing · Electrical Eng. & Systems 2022-06-06 Zahra Esmaeilbeig , Kumar Vijay Mishra , Mojtaba Soltanalian

Six-dimensional movable antenna (6DMA) is a promising solution for enhancing wireless network capacity through the adjustment of both three-dimensional (3D) positions and 3D rotations of distributed antenna surfaces. Previous works mainly…

Information Theory · Computer Science 2024-12-09 Haozhe Wang , Xiaodan Shao , Beixiong Zheng , Xiaoming Shi , Rui Zhang

We study active array imaging of small but strong scatterers in homogeneous media when multiple scattering between them is important. We use the Foldy-Lax equations to model wave propagation with multiple scattering when the scatterers are…

Mathematical Physics · Physics 2015-12-15 Anwei Chai , Miguel Moscoso , George Papanicolaou

Optical limiters are designed to transmit low intensity light, while blocking the light with excessively high intensity. A typical passive limiter absorbs excessive electromagnetic energy, which can cause its overheating and destruction. We…

Optics · Physics 2013-09-11 Eleana Makri , Hamidreza Ramezani , Tsampikos Kottos , Ilya Vitebskiy

This paper tackles the challenge of accurate positioning in Non-Line-of-Sight (NLoS) environments, with a focus on indoor public safety scenarios where NLoS bias severely impacts localization performance. We explore Diffraction MultiPath…

Signal Processing · Electrical Eng. & Systems 2025-09-05 Gaurav Duggal , Anand M. Kumar , R. Michael Buehrer , Harpreet S. Dhillon , Nishith Tripathi , Jeffrey H. Reed

This paper investigates the use of a Passive Intelligent Mirrors (PIM) to operate a multi-user MISO downlink communication. The transmit powers and the mirror reflection coefficients are designed for sum-rate maximization subject to…

Information Theory · Computer Science 2018-07-20 Chongwen Huang , Alessio Zappone , Mérouane Debbah , Chau Yuen

In the past, NLOS propagation was shown to be a source of distortion for radio-based positioning systems. Every NLOS component was perceived as a perturbation which resulted from the lack of temporal and spatial resolution of previous…

Information Theory · Computer Science 2017-12-06 Rico Mendrzik , Henk Wymeersch , Gerhard Bauch , Zohair Abu-Shaban

Line-of-sight link blockages represent a key challenge for the reliability and latency of millimeter wave (mmWave) and terahertz (THz) communication networks. To address this challenge, this paper leverages mmWave and LiDAR sensory data to…

Signal Processing · Electrical Eng. & Systems 2022-11-18 Shunyao Wu , Chaitali Chakrabarti , Ahmed Alkhateeb

We present a quantum-correlation-based free-space optical(FSO) link over 250 m using an outdoor active reflector 125 m from the transceiver station. The performance of free-space optical communication can be significantly degraded by…

Quantum Physics · Physics 2022-07-27 Dongkyu Kim , Dohoon Lim , Kyungdeuk Park , Yong Sup Ihn

As a means to control wireless propagation environments, the use of emerging and novel intelligent reflecting surfaces (IRS) is envisioned to enhance and broaden many applications in future wireless networks. This paper is concerned with a…

Signal Processing · Electrical Eng. & Systems 2020-03-23 Dian-Wu Yue , Ha H. Nguyen , Yu Sun

In the past few decades, the localization literature has seen many models attempting to characterize the non-line-of-sight (NLOS) bias error commonly experienced in range measurements. These models have either been based on specific…

Information Theory · Computer Science 2019-05-17 Christopher E. O'Lone , Harpreet S. Dhillon , R. Michael Buehrer

High-rank line-of-sight (LOS) MIMO systems have attracted considerable attention for millimeter wave and THz communications. The small wavelengths in these frequencies enable spatial multiplexing with massive data rates at long distances.…

Signal Processing · Electrical Eng. & Systems 2023-04-18 Yaqi Hu , Mingsheng Yin , Sundeep Rangan , Marco Mezzavilla

The presence of Non-Line-of-Sight (NLoS) blind spots resulting from roadside parking in urban environments poses a significant challenge to road safety, particularly due to the sudden emergence of pedestrians. mmWave technology leverages…

Computer Vision and Pattern Recognition · Computer Science 2025-08-07 Hee-Yeun Kim , Byeonggyu Park , Byonghyok Choi , Hansang Cho , Byungkwan Kim , Soomok Lee , Mingu Jeon , Seung-Woo Seo , Seong-Woo Kim

Non-Line-of-Sight (NLOS) imaging allows to observe objects partially or fully occluded from direct view, by analyzing indirect diffuse reflections off a secondary, relay surface. Despite its many potential applications, existing methods…

Computer Vision and Pattern Recognition · Computer Science 2019-08-07 Xiaochun Liu , Ibón Guillén , Marco La Manna , Ji Hyun Nam , Syed Azer Reza , Toan Huu Le , Diego Gutierrez , Adrian Jarabo , Andreas Velten

Practical ISAC is constrained by static clutter and NLoS multipath, which obscure target-coupled echoes and induce spurious peaks for beam alignment. Existing receiver-side methods largely model targets as passive scatterers, limiting the…

Information Theory · Computer Science 2026-05-27 Xuehui Dong , Kai Wan , Gui Zhou , Chen Shao , Miyu Feng , Robert Caiming Qiu

Leveraging higher frequencies up to THz band paves the way towards a faster network in the next generation of wireless communications. However, such shorter wavelengths are susceptible to higher scattering and path loss forcing the link to…

Signal Processing · Electrical Eng. & Systems 2021-10-04 Dileepa Marasinghe , Nandana Rajatheva , Matti Latva-aho

LiDARs are being increasingly deployed for consumer imaging in handheld, wearable, and robotic applications. These sensors can capture the time-of-flight of light at picosecond resolution, which in principle, enables them to capture…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Siddharth Somasundaram , Aaron Young , Akshat Dave , Adithya Pediredla , Ramesh Raskar

The coverage probability of a user in a mmwave system depends on the availability of line-of-sight paths or reflected paths from any base station. Many prior works modelled blockages using random shape theory and analyzed the SIR…

Information Theory · Computer Science 2017-08-08 Aroon Narayanan , Sreejith T. , Radha Krishna Ganti

In this work, we propose a novel approach for high accuracy user localization by merging tools from both millimeter wave (mmWave) imaging and communications. The key idea of the proposed solution is to leverage mmWave imaging to construct a…

Information Theory · Computer Science 2018-11-20 Mohammed Aladsani , Ahmed Alkhateeb , Georgios C. Trichopoulos