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Precise indoor localization is an increasingly demanding requirement for various emerging applications, like Virtual/Augmented reality and personalized advertising. Current indoor environments are equipped with pluralities of WiFi access…

Signal Processing · Electrical Eng. & Systems 2019-11-21 Chenlu Xiang , Shunqing Zhang , Shugong Xu , Xiaojing Chen , George C. Alexandropoulos , Vincent K. N. Lau

Smartphones together with RSSI fingerprinting serve as an efficient approach for delivering a low-cost and high-accuracy indoor localization solution. However, a few critical challenges have prevented the wide-spread proliferation of this…

Signal Processing · Electrical Eng. & Systems 2022-05-18 Saideep Tiku , Danish Gufran , Sudeep Pasricha

The demand for device-free indoor localization using commercial Wi-Fi devices has rapidly increased in various fields due to its convenience and versatile applications. However, random frequency offset (RFO) in wireless channels poses…

Signal Processing · Electrical Eng. & Systems 2023-04-14 Wen Liu , An-Hung Hsiao , Li-Hsiang Shen , Kai-Ten Feng

This paper introduces an indoor localization method using fixed reflector objects within the environment, leveraging a base station (BS) equipped with Angle of Arrival (AoA) and Time of Arrival (ToA) measurement capabilities. The…

Information Theory · Computer Science 2024-06-05 Milad Johnny , Shahrokh Valaee

We propose and implement a novel indoor localization scheme, Swadloon, built upon an accurate acoustic direction finding. Swadloon leverages sensors of the smartphone without the requirement of any specialized devices. The scheme Swadloon…

Networking and Internet Architecture · Computer Science 2013-06-10 Wenchao Huang , Yan Xiong , Xiang-Yang Li , Hao Lin , Xufei Mao , Panlong Yang , Yunhao Liu

Most existing fingerprints-based indoor localization approaches are based on some single fingerprints, such as received signal strength (RSS), channel impulse response (CIR), and signal subspace. However, the localization accuracy obtained…

Machine Learning · Statistics 2017-12-21 Xiansheng Guo , Nirwan Ansari

Indoor location-based services rely on the availability of sufficiently accurate positioning in indoor spaces. A popular approach to positioning relies on so-called radio maps that contain pairs of a vector of Wi-Fi signal strength…

Databases · Computer Science 2023-03-01 Xiao Li , Huan Li , Harry Kai-Ho Chan , Hua Lu , Christian S. Jensen

Recent years have witnessed the rapid proliferation of backscatter technologies that realize the ubiquitous and long-term connectivity to empower smart cities and smart homes. Localizing such backscatter tags is crucial for IoT-based smart…

Signal Processing · Electrical Eng. & Systems 2020-05-28 Shengkai Zhang , Wei Wang , Sheyang Tang , Shi Jin , Tao Jiang

Simultaneous localization and mapping (SLAM) has been richly researched in past years particularly with regard to range-based or visual-based sensors. Instead of deploying dedicated devices that use visual features, it is more pragmatic to…

An indoor layout sensing and localization system in 60GHz millimeter wave (mmWave) band, named mmReality, is elaborated in this paper. The mmReality system consists of one transmitter and one mobile receiver, each with a phased array and a…

Signal Processing · Electrical Eng. & Systems 2023-01-10 Yifei Sun , Jie Li , Tong Zhang , Rui Wang , Xiaohui Peng , Tony Xiao Han , Haisheng Tan

Multi-robot systems have increasingly become instrumental in tackling search and coverage problems. However, the challenge of optimizing task efficiency without compromising task success still persists, particularly in expansive,…

Robotics · Computer Science 2024-07-18 Xinyi Wang , Jiwen Xu , Chuanxiang Gao , Yizhou Chen , Jihan Zhang , Chenggang Wang , Ben M. Chen

Indoor localization is a cornerstone of mobile services. Until now most of the research effort has focused on achieving sub-meter localization accuracy because many mobile applications depend on precise localization measurements. In some…

Networking and Internet Architecture · Computer Science 2017-12-06 Qingzhi Liu , Wieger IJntema , Anass Drif , Przemysław Pawełczak , Marco Zuniga

Indoor wireless ranging localization is a promising approach for low-power and high-accuracy localization of wearable devices. A primary challenge in this domain stems from non-line of sight propagation of radio waves. This study tackles a…

Robotics · Computer Science 2023-09-19 Fan Jiang , David Caruso , Ashutosh Dhekne , Qi Qu , Jakob Julian Engel , Jing Dong

Radio maps (RMs) serve as environment-aware electromagnetic (EM) representations that connect scenario geometry and material properties to the spatial distribution of signal strength, enabling localization without costly in-situ…

Machine Learning · Computer Science 2025-11-26 Xiucheng Wang , Tingwei Yuan , Yang Cao , Nan Cheng , Ruijin Sun , Weihua Zhuang

Leveraging received signal strength (RSS) measurements for indoor localization is highly attractive due to their inherent availability in ubiquitous wireless protocols. However, prevailing RSS-based methods often depend on complex…

Signal Processing · Electrical Eng. & Systems 2025-09-30 Luis F. Abanto-Leon , Muhammad Salman , Lismer Andres Caceres-Najarro

Indoor localization has recently witnessed an increase in interest, due to the potential wide range of services it can provide by leveraging Internet of Things (IoT), and ubiquitous connectivity. Different techniques, wireless technologies…

Networking and Internet Architecture · Computer Science 2019-01-18 Faheem Zafari , Athanasios Gkelias , Kin Leung

Fingerprinting-based indoor localization is an emerging application domain for enhanced positioning and tracking of people and assets within indoor locales. The superior pairing of ubiquitously available WiFi signals with computationally…

Machine Learning · Computer Science 2021-12-02 Saideep Tiku , Sudeep Pasricha

Indoor localization is critical for IoT applications, yet challenges such as non-Gaussian noise, environmental interference, and measurement outliers hinder the robustness of traditional methods. Existing approaches, including Kalman…

Systems and Control · Electrical Eng. & Systems 2025-05-14 Zhiyi Zhou , Dongzhuo Liu , Songtao Guo , Yuanyuan Yang

SAPPO is a high-precision, low-cost and highly scalable indoor localization system. The system is designed using modified HC-SR04 ultrasound transducers as a base to be used as distance meters between beacons and mobile robots.…

Robotics · Computer Science 2024-09-04 Antonio Losada González

Channel state information (CSI) based fingerprinting for WIFI indoor localization has attracted lots of attention very recently.The frequency diverse and temporally stable CSI better represents the location dependent channel characteristics…

Networking and Internet Architecture · Computer Science 2021-07-06 Zhihui Gao , Yunfan Gao , Sulei Wang , Dan Li , Yuedong Xu