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This paper proposes a navigation method considering blind spots based on the robot operating system (ROS) navigation stack and blind spots layer (BSL) for a wheeled mobile robot. In this paper, environmental information is recognized using…

Robotics · Computer Science 2024-05-10 Masato Kobayashi , Naoki Motoi

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

Integrating wireless sensing capabilities into base stations (BSs) has become a widespread trend in the future beyond fifth-generation (B5G)/sixth-generation (6G) wireless networks. In this paper, we investigate intelligent reflecting…

Emerging Technologies · Computer Science 2024-04-09 Taotao Ji , Meng Hua , Xuanhong Yan , Chunguo Li , Yongming Huang , Luxi Yang

Intelligent reflecting surface (IRS) is a new and disruptive technology to achieve spectrum- and energy-efficient as well as cost-efficient wireless networks. This paper considers an IRS-assisted downlink non-orthogonal-multiple-access…

Information Theory · Computer Science 2020-01-01 Gang Yang , Xinyue Xu , Ying-Chang Liang

The integration of Optical Intelligent Reflective Surfaces (OIRSs) into Visible Light Communication (VLC) systems is gaining momentum as a valid alternative to RF technologies, harnessing the existing lighting infrastructures and the vast…

Intelligent reflecting surface (IRS) has emerged as a promising technology to reconfigure the radio propagation environment by dynamically controlling wireless signal's amplitude and/or phase via a large number of reflecting elements. In…

Signal Processing · Electrical Eng. & Systems 2022-05-26 Xiaodan Shao , Changsheng You , Wenyan Ma , Xiaoming Chen , Rui Zhang

We propose a neural inverse rendering approach that jointly reconstructs geometry, spatially varying reflectance, and lighting conditions from multi-view images captured under varying directional lighting. Unlike prior multi-view…

Computer Vision and Pattern Recognition · Computer Science 2025-08-01 Xu Cao , Takafumi Taketomi

This paper presents a non-cooperative source localization approach based on received signal strength (RSS) and 2D environment map, considering both line-of-sight (LOS) and non-line-of-sight (NLOS) conditions. Conventional localization…

Signal Processing · Electrical Eng. & Systems 2025-06-11 Hao Sun , Weiming Huang , Xianghao Yu , Junting Chen

We investigate localization of a source based on angle of arrival (AoA) measurements made at a geographically dispersed network of cooperating receivers. The goal is to efficiently compute accurate estimates despite outliers in the AoA…

Networking and Internet Architecture · Computer Science 2012-06-19 Bharath Ananthasubramaniam , Upamanyu Madhow

Non-line-of-sight (NLOS) imaging, recovering the hidden volume from indirect reflections, has attracted increasing attention due to its potential applications. Despite promising results, existing NLOS reconstruction approaches are…

Computer Vision and Pattern Recognition · Computer Science 2024-09-24 Shida Sun , Yue Li , Yueyi Zhang , Zhiwei Xiong

Intelligent reflecting surface (IRS), which consists of a large number of tunable reflective elements, is capable of enhancing the wireless propagation environment in a cellular network by intelligently reflecting the electromagnetic waves…

Signal Processing · Electrical Eng. & Systems 2021-06-10 Tao Jiang , Hei Victor Cheng , Wei Yu

Non-line-of-sight (NLOS) optical imaging and sensing of objects imply new capabilities valuable to autonomous technology, machine vision, and other applications. Existing NLOS imaging methods rely heavily on the prowess of computational…

Optics · Physics 2022-07-21 Shenyu Zhu , Yong Meng Sua , Patrick Rehain , Yu-Ping Huang

This paper introduces a new approach to localize user devices located in non-line-of-sight (NLOS) areas using a passive, non-reconfigurable, and frequency-selective metasurface called metaprism. By analyzing the spatial filtering of…

Signal Processing · Electrical Eng. & Systems 2023-07-25 Marina Lotti , Giacomo Calesini , Davide Dardari

The target sensing/localization performance is fundamentally limited by the line-of-sight link and severe signal attenuation over long distances. This paper considers a challenging scenario where the direct link between the base station…

Information Theory · Computer Science 2023-09-27 Meng Hua , Qingqing Wu , Wen Chen , Zesong Fei , Hing Cheung So , Chau Yuen

This paper aims to facilitate more practical NLOS imaging by reducing the number of samplings and scan areas. To this end, we introduce a phasor-based enhancement network that is capable of predicting clean and full measurements from noisy…

Computer Vision and Pattern Recognition · Computer Science 2024-07-30 In Cho , Hyunbo Shim , Seon Joo Kim

Intelligent reflecting surfaces (IRSs) have several prominent advantages, including improving the level of wireless communication security and privacy. In this work, we focus on the latter aspect and introduce a strategy to counteract the…

Networking and Internet Architecture · Computer Science 2024-02-23 Francesco Malandrino , Alessandro Nordio , Carla Fabiana Chiasserini

Millimeter-wave (mmWave) communication enables multi-gigabit-per-second data rates but is highly susceptible to path loss and blockage, especially indoors. Many indoor settings, however, include naturally occurring specular surfaces such as…

Networking and Internet Architecture · Computer Science 2025-11-14 Raj Sai Sohel Bandari , Amod Ashtekar , Omar Ibrahim , Mohammed E. Eltayeb

Reliable millimeter-wave (mmWave) communication in non-line-of-sight (NLoS) conditions remains a major challenge for both military and civilian operations, especially in urban or infrastructure-limited environments. This paper presents a…

Computer Vision and Pattern Recognition · Computer Science 2025-09-05 Josue Marroquin , Nan Inzali , Miles Dillon Lantz , Campbell Freeman , Amod Ashtekar , \\Ajinkya Umesh Mulik , Mohammed E Eltayeb

Autonomous robots use simultaneous localization and mapping (SLAM) for efficient and safe navigation in various environments. LiDAR sensors are integral in these systems for object identification and localization. However, LiDAR systems…

Robotics · Computer Science 2024-09-13 Layth Hamad , Muhammad Asif Khan , Amr Mohamed

In urban areas, signal reception conditions are often poor due to reflections from buildings, resulting in inaccurate global navigation satellite system (GNSS)-based positioning. Various 3D-mapping-aided (3DMA) GNSS techniques, including…

Signal Processing · Electrical Eng. & Systems 2026-01-22 Sanghyun Kim , Jiwon Seo
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