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The estimation of the direction of electromagnetic (EM) waves from a radio source using electrically short antennas is one of the challenging problems in the field of radio astronomy. In this paper we have developed an algorithm which…

天体物理仪器与方法 · 物理学 2023-07-05 Harsha A. Tanti , Abhirup Datta , S. Ananthakrishnan

Deep neural networks represent a powerful class of function approximators that can learn to compress and reconstruct images. Existing image compression algorithms based on neural networks learn quantized representations with a constant…

计算机视觉与模式识别 · 计算机科学 2018-02-09 David Minnen , George Toderici , Michele Covell , Troy Chinen , Nick Johnston , Joel Shor , Sung Jin Hwang , Damien Vincent , Saurabh Singh

Graph Attention Network (GAT) and GraphSAGE are neural network architectures that operate on graph-structured data and have been widely studied for link prediction and node classification. One challenge raised by GraphSAGE is how to smartly…

机器学习 · 计算机科学 2020-06-09 Anderson de Andrade , Chen Liu

Continuing to estimate the Direction-of-arrival (DOA) of the signals impinging on the antenna array, even when a few elements of the underlying Uniform Linear Antenna Array (ULA) fail to work will be of practical interest in RADAR, SONAR…

其他计算机科学 · 计算机科学 2011-10-11 T. Yerriswamy , S. N. Jagadeesha

Federated training methods have gained popularity for graph learning with applications including friendship graphs of social media sites and customer-merchant interaction graphs of huge online marketplaces. However, privacy regulations…

机器学习 · 计算机科学 2024-12-23 Siddharth Ambekar , Yuhang Yao , Ryan Li , Carlee Joe-Wong

A large number of real-world networks include multiple types of nodes and edges. Graph Neural Network (GNN) emerged as a deep learning framework to generate node and graph embeddings for downstream machine learning tasks. However, popular…

机器学习 · 计算机科学 2024-11-26 Ziynet Nesibe Kesimoglu , Serdar Bozdag

Deep learning (DL) based direction of arrival (DOA) estimation is an active research topic and currently represents the state-of-the-art. Usually, DL-based DOA estimators are trained with recorded data or computationally expensive generated…

音频与语音处理 · 电气工程与系统科学 2022-02-17 Fabian Hübner , Wolfgang Mack , Emanuël A. P. Habets

Sparse arrays enable resolving more direction of arrivals (DoAs) than antenna elements using non-uniform arrays. This is typically achieved by reconstructing the covariance of a virtual large uniform linear array (ULA), which is then…

信号处理 · 电气工程与系统科学 2023-12-19 Yoav Amiel , Dor H. Shmuel , Nir Shlezinger , Wasim Huleihel

While 1-bit analog-to-digital conversion (ADC) allows to significantly reduce the analog complexity of wireless receive systems, using the exact likelihood function of the hard-limiting system model in order to obtain efficient algorithms…

信息论 · 计算机科学 2016-02-18 Manuel Stein , Kurt Barbé , Josef A. Nossek

Conventional direction-of-arrival (DoA) estimation methods rely on multi-antenna arrays, which are costly to implement on size-constrained Bluetooth Low Energy (BLE) devices. Virtual antenna array (VAA) techniques enable DoA estimation with…

信号处理 · 电气工程与系统科学 2026-02-04 Jincheng Xie , Yili Deng , Jiguang He , Pengyu Wang , Miaomiao Dong , Rui Tang , Zhongyi Huang

Heterogeneous graphs have multiple node and edge types and are semantically richer than homogeneous graphs. To learn such complex semantics, many graph neural network approaches for heterogeneous graphs use metapaths to capture multi-hop…

机器学习 · 计算机科学 2022-07-26 See Hian Lee , Feng Ji , Wee Peng Tay

Fake news detection is a significant challenge in the digital age, which has become increasingly important with the proliferation of social media and online communication networks. Graph Neural Networks (GNN)-based methods have shown high…

机器学习 · 计算机科学 2025-02-12 Batool Lakzaei , Mostafa Haghir Chehreghani , Alireza Bagheri

Fluid antenna (FA) technology has emerged as a promising approach in wireless communications due to its capability of providing increased degrees of freedom (DoFs) and exceptional design flexibility. This paper addresses the challenge of…

信号处理 · 电气工程与系统科学 2025-08-15 He Xu , Tuo Wu , Ye Tian , Kangda Zhi , Wei Liu , Baiyang Liu , Hing Cheung So , Naofal Al-Dhahir , Kin-Fai Tong , Chan-Byoung Chae , Kai-Kit Wong

An indoor localization approach uses Wi-Fi Access Points (APs) to estimate the Direction of Arrival (DoA) of the WiFi signals. This paper demonstrates FIND, a tool for Fine INDoor localization based on a software-defined radio, which…

网络与互联网体系结构 · 计算机科学 2021-03-10 Evgeny Khorov , Aleksey Kureev , Vladislav Molodtsov

Intelligent reflecting surface (IRS) is expected to play a pivotal role in future wireless sensing networks owing to its potential for high-resolution and high-accuracy sensing. In this work, we investigate a multi-target…

信息论 · 计算机科学 2024-09-17 Renwang Li , Shu Sun , Meixia Tao

We consider the problem of direction of arrival (DOA) estimation using a newly proposed structure of non-uniform linear arrays, referred to as co-prime arrays, in this paper. By exploiting the second order statistical information of the…

信息论 · 计算机科学 2015-06-18 Zhao Tan , Yonina C. Eldar , Arye Nehorai

Inspired by certain optimization solvers, the deep unfolding network (DUN) has attracted much attention in recent years for image compressed sensing (CS). However, there still exist the following two issues: 1) In existing DUNs, most…

计算机视觉与模式识别 · 计算机科学 2023-10-17 Wenxue Cui , Xiaopeng Fan , Jian Zhang , Debin Zhao

A full multi--dimensional characterization of the angle of arrival (AoA) has immediate applications to the efficient operation of modern wireless communication systems. In this work, we develop a compressed sensing based method to extract…

信息论 · 计算机科学 2020-08-31 Matilde Sánchez-Fernández , Vahid Jamali , Jaime Llorca , Antonia Tulino

Graph Neural Networks (GNNs) have been successfully used in many problems involving graph-structured data, achieving state-of-the-art performance. GNNs typically employ a message-passing scheme, in which every node aggregates information…

机器学习 · 计算机科学 2022-11-22 Michail Chatzianastasis , Johannes F. Lutzeyer , George Dasoulas , Michalis Vazirgiannis

We develop a new tensor model for slow-time multiple-input multiple output (MIMO) radar and apply it for joint direction-of-departure (DOD) and direction-of-arrival (DOA) estimation. This tensor model aims to exploit the independence of…

信号处理 · 电气工程与系统科学 2023-07-19 Feng Xu , Sergiy A. Vorobyov , Xiaopeng Yang