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Accurate modeling of outdoor-to-indoor (O2I) and indoor-to-indoor (I2I) signal loss is important for improving indoor wireless network performance in dense urban areas. Traditional on-site measurements are expensive, time-consuming, and…

机器学习 · 计算机科学 2026-04-28 Jiayi Tan , Neelabhro Roy , James Gross , Rohit Chandra , Tsao-Tsen Chen

Distance estimation is vital for localization and many other applications in wireless sensor networks (WSNs). Particularly, it is desirable to implement distance estimation as well as localization without using specific hardware in low-cost…

信号处理 · 电气工程与系统科学 2018-01-30 Qing Miao , Baoqi Huang , Bing Jia

Wi-Fi sensing is an emerging technology that uses channel state information (CSI) from ambient Wi-Fi signals to monitor human activity without the need for dedicated sensors. Wi-Fi sensing does not only represent a pivotal technology in…

网络与互联网体系结构 · 计算机科学 2025-05-07 Paolo Cerutti , Fabio Palmese , Marco Cominelli , Alessandro E. C. Redondi

Reconfigurable intelligent surfaces (RISs) have emerged as a promising technology to enhance the performance of sixth-generation (6G) and beyond communication systems. The passive nature of RISs and their large number of reflecting elements…

In this paper, we consider a general cooperative wireless sensor network (WSN) with multiple hops and the problem of channel estimation. Two matrix-based set-membership algorithms are developed for the estimation of the complex matrix…

信息论 · 计算机科学 2013-03-18 T. Wang , R. C. de Lamare , P. D. Mitchell

The development of wireless sensing technologies, using signals such as Wi-Fi, infrared, and RF to gather environmental data, has significantly advanced within Internet of Things (IoT) systems. Among these, Radio Frequency (RF) sensing…

信号处理 · 电气工程与系统科学 2024-11-26 Li Wang , Chao Zhang , Qiyang Zhao , Hang Zou , Samson Lasaulce , Giuseppe Valenzise , Zhuo He , Merouane Debbah

Neural processes (NPs) learn stochastic processes and predict the distribution of target output adaptively conditioned on a context set of observed input-output pairs. Furthermore, Attentive Neural Process (ANP) improved the prediction…

机器学习 · 计算机科学 2019-10-22 Shenghao Qin , Jiacheng Zhu , Jimmy Qin , Wenshuo Wang , Ding Zhao

Channel estimation in reconfigurable intelligent surfaces (RIS)-aided systems is crucial for optimal configuration of the RIS and various downstream tasks such as user localization. In RIS-aided systems, channel estimation involves…

信号处理 · 电气工程与系统科学 2023-12-19 Firas Fredj , Amal Feriani , Amine Mezghani , Ekram Hossain

Uplink sensing in perceptive mobile networks (PMNs), which uses uplink communication signals for sensing the environment around a base station, faces challenging issues of clock asynchronism and the requirement of a line-of-sight (LOS) path…

信息论 · 计算机科学 2022-11-08 Zhitong Ni , J. Andrew Zhang , Kai Wu , Ren Ping Liu

An important task in the Internet of Things (IoT) is field monitoring, where multiple IoT nodes take measurements and communicate them to the base station or the cloud for processing, inference, and analysis. This communication becomes…

机器学习 · 计算机科学 2020-03-25 Rong Du , Sindri Magnússon , Carlo Fischione

Industrial wireless sensor networks are becoming crucial for modern manufacturing. If the sensors in those networks are mobile, the position information, besides the sensor data itself, can be of high relevance. E.g. this position…

信息论 · 计算机科学 2021-05-03 Julian Karoliny , Thomas Blazek , Fjolla Ademaj , Hans-Peter Bernhard , Andreas Springer

In this paper, channel estimation of an active intelligent reflecting surface (IRS) aided uplink Internet of Things (IoT) network is investigated. Firstly, the least square (LS) estimators for the direct channel and the cascaded channel are…

信号处理 · 电气工程与系统科学 2024-07-16 Yan Wang , Feng Shu , Rongen Dong , Wei Gao , Qi Zhang , Jiajia Liu

Over the recent years, the proliferation of smart devices and their applications has led to a rapid evolution of the concept of the Internet of Things (IoT), advancing large scale machine type networks which are characterized by sporadic…

信号处理 · 电气工程与系统科学 2019-03-27 Eleni Demarchou , Constantinos Psomas , Ioannis Krikidis

Future wireless networks may operate at millimeter-wave (mmW) and sub-terahertz (sub-THz) frequencies to enable high data rate requirements. While large antenna arrays are critical for reliable communications at mmW and sub-THz bands, these…

信号处理 · 电气工程与系统科学 2022-06-08 Benjamin W. Domae , Veljko Boljanovic , Ruifu Li , Danijela Cabric

With the growing integration of location based services (LBS) such as GPS in mobile devices, indoor position systems (IPS) have become an important role for research. There are several IPS methods such as AOA, TOA, TDOA, which use…

网络与互联网体系结构 · 计算机科学 2019-07-02 Erick Schmidt , David Akopian

Intelligent surfaces comprising of cost effective, nearly passive, and reconfigurable unit elements are lately gaining increasing interest due to their potential in enabling fully programmable wireless environments. They are envisioned to…

信息论 · 计算机科学 2022-05-26 George C. Alexandropoulos , Evangelos Vlachos

Intelligent reflecting surface (IRS) is a promising technology for wireless communications, thanks to its potential capability to engineer the radio environment. However, in practice, such an envisaged benefit is attainable only when the…

信息论 · 计算机科学 2021-06-14 Chao Feng , Haiquan Lu , Yong Zeng , Shi Jin , Rui Zhang

Using commodity WiFi data for applications such as indoor localization, object identification and tracking and channel sounding has recently gained considerable attention. We study the problem of channel impulse response (CIR) estimation…

This paper presents a novel indoor positioning approach that leverages antenna radiation pattern characteristics through Received Signal Strength Indication (RSSI) measurements in a single-antenna system. By rotating the antenna or…

信号处理 · 电气工程与系统科学 2025-03-04 Zhisheng Rong , Wenzhi Liu , Xiayue Liu , Zhixiang Xu , Yufei Jiang , Xu Zhu

Internet of Things (IoT) networks have become an increasingly attractive target of cyberattacks. Powerful Machine Learning (ML) models have recently been adopted to implement network intrusion detection systems to protect IoT networks. For…

密码学与安全 · 计算机科学 2022-11-24 Mohanad Sarhan , Siamak Layeghy , Marius Portmann