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Artificial Intelligence (AI) solutions for wireless location estimation are likely to prevail in many real-world scenarios. In this work, we demonstrate for the first time how the Cramer-Rao upper bound on localization accuracy can…

Signal Processing · Electrical Eng. & Systems 2024-10-30 Ihsan Ullah , Robert Malaney , Shihao Yan

This paper deals with the localization problem of mobile robot subject to communication delay and packet loss. The delay and loss may appear in a random fashion in both control inputs and observation measurements. A unified state-space…

Robotics · Computer Science 2016-12-06 Manh Duong Phung , Thi Thanh Van Nguyen , Thuan Hoang Tran , Quang Vinh Tran

Large reflecting surface (LRS) has emerged as a new solution to improve the energy and spectrum efficiency of wireless communication system. Most existing studies were conducted with an assumption of ideal hardware, and the impact of…

Information Theory · Computer Science 2020-04-22 Yiming Liu , Erwu Liu , Rui Wang , Yuanzhe Geng

We consider the problem of estimating the 3D orientation of a user, using the downlink mmWave signals received from multiple base stations. We show that the received signals from several base stations, having known positions, can be used to…

Signal Processing · Electrical Eng. & Systems 2021-01-06 Mohammad A. Nazari , Gonzalo Seco-Granados , Pontus Johannisson , Henk Wymeersch

To promote the practicality of deep learning-based localization, existing studies aim to address the issue of scenario dependence through meta-learning. However, these studies primarily focus on variations in environmental layouts while…

Machine Learning · Computer Science 2025-11-19 Qiqi Xiao , Ziqi Ye , Yinghui He , Jianwei Liu , Guanding Yu

Mobile communication standards were developed for enhancing transmission and network performance by using more radio resources and improving spectrum and energy efficiency. How to effectively address diverse user requirements and guarantee…

Relaying can improve the coverage and performance of wireless access networks. In presence of a localisation system at the mobile nodes, the use of such location estimates for relay node selection can be advantageous as such information can…

Networking and Internet Architecture · Computer Science 2015-05-08 Jimmy J. Nielsen , Rasmus L. Olsen , Tatiana K. Madsen , Bernard Uguen , Hans-Peter Schwefel

Based on the vision on the 6G wireless communication network, i.e., global coverage, all spectrums and all applications, we comprehensively survey 6G related wireless channel measurements, channel characteristics, and channel models for all…

Signal Processing · Electrical Eng. & Systems 2020-07-29 Cheng-Xiang Wang , Jie Huang , Haiming Wang , Xiqi Gao , Xiaohu You , Yang Hao

5G new radio (NR) provides new opportunities for accurate positioning from a single reference station: large bandwidth combined with multiple antennas, at both the base station and user sides, allows for unparalleled angle and delay…

Signal Processing · Electrical Eng. & Systems 2019-01-08 Henk Wymeersch , Nil Garcia , Hyowon Kim , Gonzalo Seco-Granados , Sunwoo Kim , Fuxi Wen , Markus Fröhle

6G is the next generation for the communication systems. In recent years, machine learning algorithms have been applied widely in various fields such as health, transportation, and the autonomous car. The predictive algorithms will be used…

Machine Learning · Computer Science 2021-03-15 Evren Catak , Ferhat Ozgur Catak , Arild Moldsvor

Positioning has recently received considerable attention as a key enabler in emerging applications such as extended reality, unmanned aerial vehicles and smart environments. These applications require both data communication and…

Signal Processing · Electrical Eng. & Systems 2024-03-19 Yang Yang , Mingzhe Chen , Yufei Blankenship , Jemin Lee , Zabih Ghassemlooy , Julian Cheng , Shiwen Mao

We consider the problem of obtaining relative location information between two wireless nodes from the differences in their ultra-wideband (UWB) channels to observer nodes. Our approach focuses on the delays of multipath components (MPCs)…

Signal Processing · Electrical Eng. & Systems 2022-06-08 Gregor Dumphart , Robin Kramer , Armin Wittneben

Wireless links are characterized by fluctuating quality leading to variable packet error rates which are orders of magnitude higher than the ones of wired links. Therefore, it is of paramount importance to investigate the limitations of…

Signal Processing · Electrical Eng. & Systems 2018-07-02 Mustafa Emara , Miltiades C. Filippou , Ingolf Karls

WiFi-based localization became one of the main indoor localization techniques due to the ubiquity of WiFi connectivity. However, indoor environments exhibit complex wireless propagation characteristics. Typically, these characteristics are…

Networking and Internet Architecture · Computer Science 2015-08-04 Heba Aly , Moustafa Youssef

It is important that the wireless network is well optimized and planned, using the limited wireless spectrum resources, to serve the explosively growing traffic and diverse applications needs of end users. Considering the challenges of…

Systems and Control · Electrical Eng. & Systems 2022-09-15 Ying Li , Djordje Tujkovic , Po-Han Huang

Wireless signal recognition (WSR) is a crucial technique for intelligent communications and spectrum sharing in the next six-generation (6G) wireless communication networks. It can be utilized to enhance network performance and efficiency,…

Signal Processing · Electrical Eng. & Systems 2025-03-12 Hao Zhang , Fuhui Zhou , Hongyang Du , Qihui Wu , Chau Yuen

We study transmission delay minimization of a wireless powered communication (WPC) system in a point-to-point scenario with one hybrid access point (HAP) and one WPC node. In this type of communications, the HAP sends energy to the node at…

Information Theory · Computer Science 2018-06-27 Mohammad Lari

Cellular wireless systems rely on frame-based transmissions. The frame design is conventionally based on heuristics, consisting of a frame header and a data part. The frame header contains control information that provides pointers to the…

Information Theory · Computer Science 2016-05-09 Kasper Fløe Trillingsgaard , Petar Popovski

Wireless communication systems to date primarily rely on the orthogonality of resources to facilitate the design and implementation, from user access to data transmission. Emerging applications and scenarios in the sixth generation (6G)…

Signal Processing · Electrical Eng. & Systems 2024-11-21 Wei Chen , Yuanwei Liu , Hamid Jafarkhani , Yonina C. Eldar , Peiying Zhu , Khaled B Letaief

Communication in Millimeter wave (mmWave) band relies on narrow beams due to directionality, high path loss, and shadowing. One can use beam alignment (BA) techniques to find and adjust the direction of these narrow beams. In this paper, BA…

Information Theory · Computer Science 2022-01-19 Abbas Khalili , Shahram Shahsavari , Mohammad A. Amir Khojastepour , Elza Erkip