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To overcome the high path-loss and the intense shadowing in millimeter-wave (mmWave) communications, effective beamforming schemes are required which incorporate narrow beams with high beamforming gains. The mmWave channel consists of a few…

信息论 · 计算机科学 2022-02-15 Nariman Torkzaban , Mohammad A. , Khojastepour , John S. Baras

The detection and localization of a source hidden outside the Line-of-Sight (LOS) traditionally rely on the acquisition of indirect signals, such as those reflected from visible relay surfaces such as floors or walls. These reflected…

声音 · 计算机科学 2025-06-11 Tal I. Sommer , Ori Katz

Radio propagation modeling is essential in telecommunication research, as radio channels result from complex interactions with environmental objects. Recently, Machine Learning has been attracting attention as a potential alternative to…

Channel tracking in millimeter wave (mmWave) vehicular systems is crucial for maintaining robust vehicle-to-infrastructure (V2I) communication links, which can be leveraged to achieve high accuracy vehicle position and orientation tracking…

信号处理 · 电气工程与系统科学 2025-03-10 Yun Chen , Nuria González-Prelcic , Takayuki Shimizu , Chinmay Mahabal

An unknown-position sensor can be localized if there are three or more anchors making time-of-arrival (TOA) measurements of a signal from it. However, the location errors can be very large due to the fact that some of the measurements are…

信息论 · 计算机科学 2016-11-17 Hongyang Chen , Kenneth W. K. Lui , Zizhuo Wang , H. C. So , H. Vincent Poor

Source localization in a complex flow poses a significant challenge for multi-robot teams tasked with localizing the source of chemical leaks or tracking the dispersion of an oil spill. The flow dynamics can be time-varying and chaotic,…

机器人学 · 计算机科学 2025-09-18 Benjamin Shaffer , Victoria Edwards , Brooks Kinch , Nathaniel Trask , M. Ani Hsieh

In the domain of RIS-based indoor localization, our work introduces two distinct approaches to address real-world challenges. The first method is based on deep learning, employing a Long Short-Term Memory (LSTM) network. The second, a novel…

信号处理 · 电气工程与系统科学 2024-05-06 Rafael A. Aguiar , Nuno Paulino , Luís M. Pessoa

This paper considers N mobile nodes that move together in the vicinity of each other, whose initial poses as well as subsequent movements must be accurately tracked in real time with the assist of M(>=3) reference nodes. By engaging the…

分布式、并行与集群计算 · 计算机科学 2011-08-04 Xingkai Bao , Jing Li

Channel estimation is of crucial importance for tomorrow's wireless mobile communication systems. This paper focuses on the solution of channel parameters estimation problem in a scenario involving multiple paths in the presence of additive…

信号处理 · 电气工程与系统科学 2018-04-05 Amir Ebrahimi , Ardavan Rahimian

Direction finding and positioning systems based on RF signals are significantly impacted by multipath propagation, particularly in indoor environments. Existing algorithms (e.g MUSIC) perform poorly in resolving Angle of Arrival (AoA) in…

信号处理 · 电气工程与系统科学 2021-12-13 Zhuangzhuang Dai , Yuhang He , Tran Vu , Niki Trigoni , Andrew Markham

For signal processing related to localization technologies, non line of sight (NLOS) multipaths have a significant impact on the localization error level. This study proposes a localization correction method based on convolution neural…

信号处理 · 电气工程与系统科学 2024-02-01 Yiwen Chen , Tianqi Xiang , Xi Chen , Xin Zhang

Time Difference of Arrival (TDOA) is widely used in wireless localization systems. Among the enormous approaches of TDOA, high resolution TDOA algorithms have drawn much attention for its ability to resolve closely spaced signal delays in…

信息论 · 计算机科学 2016-11-03 Hailong Shi , Hao Zhang , Xiqin Wang

We study time difference of arrival (TDoA)-based algorithms for drone controller localization and analyze TDoA estimation in multipath channels. Building on TDoA estimation, we propose two algorithms to enhance localization accuracy in…

信息论 · 计算机科学 2025-10-06 Yuhong Wang , Yonghong Zeng , Peng Hui Tan , Sumei Sun , Yugang Ma

The direction of arrival (DOA) estimation algorithms are crucial in localizing acoustic sources. Traditional localization methods rely on block-level processing to extract the directional information from multiple measurements processed…

音频与语音处理 · 电气工程与系统科学 2023-08-15 Ruchi Pandey , Santosh Nannuru

Direction-of-arrival (DOA) estimation for incoherently distributed (ID) sources is essential in multipath wireless communication scenarios, yet it remains challenging due to the combined effects of angular spread and gain-phase…

信号处理 · 电气工程与系统科学 2025-01-29 He Xu , Tuo Wu , Wei Liu , Maged Elkashlan , Naofal Al-Dhahir , Merouane Debbah , Chau Yuen , Hing Cheung So

We consider multitarget detection and tracking problem for a class of multipath detection system where one target may generate multiple measurements via multiple propagation paths, and the association relationship among targets,…

计算机视觉与模式识别 · 计算机科学 2018-12-12 Hua Lan , Shuai Sun , Zengfu Wang , Quan Pan , Zhishan Zhang

Large-aperture coprime arrays (CAs) are expected to achieve higher sensing resolution than conventional dense arrays (DAs), yet with lower hardware and energy cost. However, existing CA far-field localization methods cannot be directly…

信号处理 · 电气工程与系统科学 2024-11-05 Hongqiang Cheng , Changsheng You , Cong Zhou

5G mmWave communication is useful for positioning due to the geometric connection between the propagation channel and the propagation environment. Channel estimation methods can exploit the resulting sparsity to estimate parameters(delay…

信息论 · 计算机科学 2020-05-25 Fuxi Wen , Josef Kulmer , Klaus Witrisal , Henk Wymeersch

In this paper we present a new localization method SMS-LORETA (Simultaneous Multiple Sources- Low Resolution Brain Electromagnetic Tomography), capable to locate efficiently multiple simultaneous sources. The new method overcomes some of…

定量方法 · 定量生物学 2011-01-07 Avni Pllana , Herbert Bauer

This paper considers a radio-frequency (RF)-based simultaneous localization and source-seeking (SLASS) problem in multi-robot systems, where multiple robots jointly localize themselves and an RF source using distance-only measurements…

信号处理 · 电气工程与系统科学 2023-06-28 Ke Xu , Rui Zhang , He Chen