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Device-Free Localization (DFL) is a passive radio method able to detect, estimate, and localize targets (e.g., human or other obstacles) that do not need to carry any electronic device. According to the Integrated Sensing And Communication…

Signal Processing · Electrical Eng. & Systems 2025-06-10 Vittorio Rampa , Federica Fieramosca , Stefano Savazzi , Michele D'Amico

Device-Free Localization (DFL) employs passive radio techniques capable to detect and locate people without imposing them to wear any electronic device. By exploiting the Integrated Sensing and Communication paradigm, DFL networks employ…

Signal Processing · Electrical Eng. & Systems 2024-05-17 Vittorio Rampa , Federica Fieramosca , Stefano Savazzi , Michele D'Amico

Device-free localization (DFL) based on the received signal strength (RSS) measurements of radio frequency (RF)links is the method using RSS variation due to the presence of the target to localize the target without attaching any device.…

Networking and Internet Architecture · Computer Science 2015-05-14 Zhenghuan Wang , Heng Liu , Shengxin Xu , Xiangyuan Bu , Jianping An

Location-based services (LBS) are witnessing a rise in popularity owing to their key features of delivering powerful and personalized digital experiences. The recent developments in wireless sensing techniques make the realization of…

Signal Processing · Electrical Eng. & Systems 2023-05-30 Osamah A. Abdullah , Hayder Al-Hraishawi , Symeon Chatzinotas

RSS-based device-free localization (DFL) monitors changes in the received signal strength (RSS) measured by a network of static wireless nodes to locate people without requiring them to carry or wear any electronic device. Current models…

Networking and Internet Architecture · Computer Science 2013-02-26 Ossi Kaltiokallio , Maurizio Bocca , Neal Patwari

Wireless sensing is a promising technology for future wireless communication networks to realize various application services. Wireless local area network (WLAN)-based localization approaches using channel state information (CSI) have been…

Signal Processing · Electrical Eng. & Systems 2024-10-28 Osamu Muta , Kazuki Noguchi , Junsuke Izumi , Shunsuke Shimizu , Tomoki Murakami , Shinya Otsuki

RSS-based device-free localization (DFL) is a very promising technique which allows localizing the target without attaching any electronic tags in wireless environments. In cluttered indoor environments, the performance of DFL degrades due…

Networking and Internet Architecture · Computer Science 2014-03-06 Zhenghuan Wang , Heng Liu , Shengxin Xu , Xiangyuan Bu , Jianping An

Fluid antenna systems (FAS) enable dynamic antenna positioning, offering new opportunities to enhance integrated sensing and communication (ISAC) performance. However, existing studies primarily focus on communication enhancement or…

Signal Processing · Electrical Eng. & Systems 2025-01-03 Shunxing Yang , Junteng Yao , Jie Tang , Tuo Wu , Maged Elkashlan , Chau Yuen , Merouane Debbah , Hyundong Shin , Matthew Valenti

This paper presents an initial investigation into the combination of integrated sensing and communication (ISAC) and massive communication, both of which are largely regarded as key scenarios in sixth-generation (6G) wireless networks.…

Signal Processing · Electrical Eng. & Systems 2025-10-17 Junyuan Gao , Weifeng Zhu , Shuowen Zhang , Yongpeng Wu , Jiannong Cao , Giuseppe Caire , Liang Liu

In this paper, we investigate the potential of reconfigurable intelligent surfaces (RISs) in facilitating passive/device-free three-dimensional (3D) drone localization within existing cellular infrastructure operating at millimeter-wave…

Signal Processing · Electrical Eng. & Systems 2025-01-03 Jiguang He , Charles Vanwynsberghe , Hui Chen , Chongwen Huang , Aymen Fakhreddine

To enhance flexibility and facilitate resource cooperation, a novel fully-decoupled radio access network (FD-RAN) architecture is proposed for 6G. However, the decoupling of uplink (UL) and downlink (DL) in FD-RAN makes the existing…

Networking and Internet Architecture · Computer Science 2025-02-26 Jingbo Liu , Jiacheng Chen , Zongxi Liu , Haibo Zhou

Device-free localization (DFL) is an emerging technology for estimating the position of a human or object that is not equipped with any electronic tag, nor participate actively in the localization process. Similar to device-based…

Networking and Internet Architecture · Computer Science 2019-09-10 Osama T. Ibrahim , Walid Gomaa , Moustafa Youssef

Integrated sensing and communication (ISAC) represents a key paradigm for future wireless networks. However, existing approaches require waveform modifications, dedicated pilots, or overhead that complicates standards integration. We…

Signal Processing · Electrical Eng. & Systems 2026-01-09 Wentao Yu , Khaled B. Letaief , Lizhong Zheng

This paper studies integrated sensing and communication (ISAC) with dynamic time division duplex (DTDD) cell-free (CF) massive multiple-input multiple-output~(mMIMO) systems. DTDD enables the CF mMIMO system to concurrently serve both…

Signal Processing · Electrical Eng. & Systems 2025-08-15 Anubhab Chowdhury , Sai Subramanyam Thoota , Erik G. Larsson

Sixth generation (6G) cellular communications are expected to support enhanced wireless localization capabilities. The widespread deployment of large arrays and high-frequency bandwidths give rise to new considerations for localization…

Signal Processing · Electrical Eng. & Systems 2022-10-31 Qianyu Yang , Anna Guerra , Francesco Guidi , Nir Shlezinger , Haiyang Zhang , Davide Dardari , Baoyun Wang , Yonina C. Eldar

By deploying antenna arrays at the transmitter/receiver to provide additional spatial-domain degrees of freedom (DoFs), multi-antenna technology greatly improves the reliability and efficiency of wireless communication. Meanwhile, the…

Hardware Architecture · Computer Science 2024-07-17 Yong Zeng , Zhenjun Dong , Huizhi Wang , Lipeng Zhu , Ziyao Hong , Qingji Jiang , Dongming Wang , Shi Jin , Rui Zhang

Beamforming enhances signal strength and quality by focusing energy in specific directions. This capability is particularly crucial in cell-free integrated sensing and communication (ISAC) systems, where multiple distributed access points…

Emerging Technologies · Computer Science 2026-01-21 Jiexin Zhang , Shu Xu , Chunguo Li , Yongming Huang , Luxi Yang

Device-free localization (DFL) methods use measured changes in the received signal strength (RSS) between many pairs of RF nodes to provide location estimates of a person inside the wireless network. Fundamental challenges for RSS DFL…

Networking and Internet Architecture · Computer Science 2019-01-01 Peter Hillyard , Neal Patwari

In recent years, infrastructure-based localization methods have achieved significant progress thanks to their reliable and drift-free localization capability. However, the pre-installed infrastructures suffer from inflexibilities and high…

Robotics · Computer Science 2024-11-12 Hongming Shen , Zhenyu Wu , Wei Wang , Qiyang Lyu , Huiqin Zhou , Danwei Wang

Low-latency localization is critical in cellular networks to support real-time applications requiring precise positioning. In this paper, we propose a distributed machine learning (ML) framework for fingerprint-based localization tailored…

Signal Processing · Electrical Eng. & Systems 2025-07-22 Manish Kumar , Tzu-Hsuan Chou , Byunghyun Lee , Nicolò Michelusi , David J. Love , Yaguang Zhang , James V. Krogmeier
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