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With the rapid development of the internet of things (IoT), location-based services are becoming increasingly prominent in various aspects of social life, and accurate location information is crucial. However, RF-based indoor positioning…

Signal Processing · Electrical Eng. & Systems 2024-12-23 Yixuan Guo , Mingliang Xiong , Wen Fang , Qingwei Jiang , Mengyuan Xu , Qingwen Liu , Gang Yan

The rapid advancement of the next generation of communications and internet of things (IoT) technologies has made the provision of location-based services for diverse devices an increasingly pressing necessity. Localizing devices…

Signal Processing · Electrical Eng. & Systems 2024-08-09 Yixuan Guo , Qingwei Jiang , Mengyuan Xu , Wen Fang , Qingwen Liu , Gang Yan , Qunhui Yang , Hai Lu

Locating mobile devices precisely in indoor scenarios is a challenging task because of the signal diffraction and reflection in complicated environments. One vital cause deteriorating the localization performance is the inevitable power…

Signal Processing · Electrical Eng. & Systems 2022-12-05 Mengyuan Xu , Mingqing Liu , Qingwei Jiang , Wen Fang , Qingwen Liu , Shengli Zhou

With the increasing demand for internet of things (IoT) applications, especially for location-based services, how to locate passive mobile targets (MTs) with minimal beam control has become a challenge. Resonant beam systems are considered…

Signal Processing · Electrical Eng. & Systems 2025-02-14 Yixuan Guo , Qingwei Jiang , Mingliang Xiong , Wen Fang , Mingqing Liu , Qingqing Zhang , Qingwen Liu , Gang Yan

This paper studies a networked sensing system with multiple base stations (BSs), which collaboratively sense the unknown and random three-dimensional (3D) location of a target based on the target-reflected echo signals received at the BSs.…

Information Theory · Computer Science 2025-09-09 Kaiyue Hou , Shuowen Zhang

We investigate joint bistatic positioning (BP) and monostatic sensing (MS) within a multi-input multi-output orthogonal frequency-division system. Based on the derived Cram\'er-Rao Bounds (CRBs), we propose novel beamforming optimization…

Signal Processing · Electrical Eng. & Systems 2025-03-06 Yuchen Zhang , Hui Chen , Pinjun Zheng , Boyu Ning , Hong Niu , Henk Wymeersch , Tareq Y. Al-Naffouri

Sustainable energy supply and high-speed communications are two significant needs for mobile electronic devices. This paper introduces a self-aligning resonant beam system for simultaneous light information and power transfer (SLIPT),…

Signal Processing · Electrical Eng. & Systems 2025-05-09 Mingliang Xiong , Qingwen Liu , Hao Deng , Gang Wang , Gang Li , Bin He

The main focus of beam alignment is to find the optimal beam which yields the largest received signal strength (RSS) with faster speed.In this paper, we demonstrate an efficient beam alignment scheme with our testbed. The algorithm we…

Signal Processing · Electrical Eng. & Systems 2020-03-09 Junyeol Hong , Hyeonjin Chung , Sunwoo Kim

Digital backpropagation (DBP) is one of the most effective techniques for compensating nonlinear distortions in coherent optical fiber communication systems. However, its practical application to wideband transmission remains limited by…

The localization of directional RF emitters presents significant challenges for electronic warfare applications. Traditional localization methods, designed for omnidirectional emitters, experience degraded performance when applied to…

Signal Processing · Electrical Eng. & Systems 2025-10-30 Fraser Williams , Akila Pemasiri , Dhammika Jayalath , Terry Martin , Clinton Fookes

Due to their ability to anchor into tall urban landforms, such as lampposts or street lights, robotic aerial base stations (RABSs) can create a hyper-flexible wireless multi-hop heterogeneous network to meet the forthcoming green,…

Networking and Internet Architecture · Computer Science 2025-05-16 Wen Shang , Yuan Liao , Vasilis Friderikos , Halim Yanikomeroglu

A mobile robot's precise location information is critical for navigation and task processing, especially for a multi-robot system (MRS) to collaborate and collect valuable data from the field. However, a robot in situations where it does…

Robotics · Computer Science 2022-06-09 Ehsan Latif , Ramviyas Parasuraman

We propose a 6D Bayesian-based localization framework to estimate the position and rotation angles of a mobile station (MS) within an indoor reconfigurable intelligent surface (RIS)-aided system. This framework relies on a probabilistic…

Signal Processing · Electrical Eng. & Systems 2025-08-26 Leonardo Tercas , Markku Juntti

Location of Base Stations (BS) in mobile networks plays an important role in coverage and received signal strength. As Internet ofThings (IoT), autonomous vehicles and smart cities evolve, wireless net-work coverage will have an important…

Signal Processing · Electrical Eng. & Systems 2026-04-21 Kritik Soman , K. S. Venkatesh

Integrated sensing and communication (ISAC) systems demand precise and efficient target localization, a task challenged by rich multipath propagation in complex wireless environments. This paper introduces MARBLE-Net (Multipath-Aware…

Signal Processing · Electrical Eng. & Systems 2026-02-11 Qiushi Liang , Yeyue Cai , Jianhua Mo , Meixia Tao

Due to power attenuation, improving transmission efficiency in the radio-frequency (RF) band remains a significant challenge, which hinders advancements in various fields of the Internet of Things (IoT), such as wireless power transfer…

Numerical Analysis · Mathematics 2025-01-28 Qingwei Jiang , Mingqing Liu , Mengyuan Xu , Wen Fang , Mingliang Xiong , Qingwen Liu , Shengli Zhou

We propose an advance Steered Response Power (SRP) method for localizing multiple sources. While conventional SRP performs well in adverse conditions, it remains to struggle in scenarios with closely neighboring sources, resulting in…

Audio and Speech Processing · Electrical Eng. & Systems 2024-05-21 Wei-Ting Lai , Lachlan Birnie , Xingyu Chen , Amy Bastine , Thushara D. Abhayapala , Prasanga N. Samarasinghe

Beam management (BM), i.e., the process of finding and maintaining a suitable transmit and receive beam pair, can be challenging, particularly in highly dynamic scenarios. Side-information, e.g., orientation, from on-board sensors can…

Signal Processing · Electrical Eng. & Systems 2022-02-07 Khuong N. Nguyen , Anum Ali , Jianhua Mo , Boon Loong Ng , Vutha Va , Jianzhong Charlie Zhang

Accurate localization is an essential technology for the flexible navigation of robots in large-scale environments. Both SLAM-based and map-based localization will increase the computing load due to the increase in map size, which will…

Robotics · Computer Science 2024-04-30 Yixiao Feng , Zhou Jiang , Yongliang Shi , Yunlong Feng , Xiangyu Chen , Hao Zhao , Guyue Zhou

Radio Map Prediction (RMP), aiming at estimating coverage of radio wave, has been widely recognized as an enabling technology for improving radio spectrum efficiency. However, fast and reliable radio map prediction can be very challenging…

Signal Processing · Electrical Eng. & Systems 2021-05-18 Yu Tian , Shuai Yuan , Weisheng Chen , Naijin Liu
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