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We propose a scalable framework for the learning of high-dimensional parametric maps via adaptively constructed residual network (ResNet) maps between reduced bases of the inputs and outputs. When just few training data are available, it is…

Radio channel modeling is one of the most fundamental aspects in the process of designing, optimizing, and simulating wireless communication networks. In this field, long-established approaches such as analytical channel models and ray…

Networking and Internet Architecture · Computer Science 2021-12-16 Benjamin Sliwa , Melina Geis , Caner Bektas , Melisa Lopéz , Preben Mogensen , Christian Wietfeld

To have a superior generalization, a deep learning neural network often involves a large size of training sample. With increase of hidden layers in order to increase learning ability, neural network has potential degradation in accuracy.…

Machine Learning · Computer Science 2019-01-01 Lianfa Li , Ying Fang , Jun Wu , Jinfeng Wang

Outdoor radio map estimation is an important tool for network planning and resource management in modern Internet of Things (IoT) and cellular systems. Radio map describes spatial signal strength distribution and provides network coverage…

Signal Processing · Electrical Eng. & Systems 2022-12-27 Songyang Zhang , Achintha Wijesinghe , Zhi Ding

Accurate indoor positioning for wireless communication systems represents an important step towards enhanced reliability and security, which are crucial aspects for realizing Industry 4.0. In this context, this paper presents an…

Signal Processing · Electrical Eng. & Systems 2023-06-07 Ivo Bizon , Zhongju Li , Ahmad Nimr , Marwa Chafii , Gerhard P. Fettweis

For high resolution scene mapping and object recognition, optical technologies such as cameras and LiDAR are the sensors of choice. However, for robust future vehicle autonomy and driver assistance in adverse weather conditions,…

Computer Vision and Pattern Recognition · Computer Science 2019-12-09 Marcel Sheeny , Andrew Wallace , Sen Wang

Recently, Low Earth Orbit (LEO) satellite networks (i.e., non-terrestrial network (NTN)), such as Starlink, have been successfully deployed to provide broader coverage than terrestrial networks (TN). Due to limited spectrum resources, TN…

Networking and Internet Architecture · Computer Science 2025-01-07 Haoxuan Yuan , Zhe Chen , Zheng Lin , Jinbo Peng , Yuhang Zhong , Xuanjie Hu , Songyan Xue , Wei Li , Yue Gao

The efficient deployment and operation of any wireless communication ecosystem rely on knowledge of the received signal quality over the target coverage area. This knowledge is typically acquired through radio propagation solvers, which…

Signal Processing · Electrical Eng. & Systems 2024-08-23 Stefanos Bakirtzis , Cagkan Yapar , Marco Fiore , Jie Zhang , Ian Wassell

In low altitude UAV communications, accurate channel estimation remains challenging due to the dynamic nature of air to ground links, exacerbated by high node mobility and the use of large scale antenna arrays, which introduce hybrid near…

Information Theory · Computer Science 2025-10-24 Wenli Yuan , Kan Yu , Xiaowu Liu , Kaixuan Li , Qixun Zhang , Zhiyong Feng

Intelligent reflecting surfaces (IRS) have been proposed in millimeter wave (mmWave) and terahertz (THz) systems to achieve both coverage and capacity enhancement, where the design of hybrid precoders, combiners, and the IRS typically…

Information Theory · Computer Science 2023-05-31 Shuntian Zheng , Sheng Wu , Chunxiao Jiang , Wei Zhang , Xiaojun Jing

Accurate radio wave propagation modeling is essential for effective spectrum management by regulators and network deployment by operators. This paper investigates the ITU-R P.1812-7 (P.1812) propagation model's reliance on geospatial…

Signal Processing · Electrical Eng. & Systems 2025-01-22 Mathieu Chateauvert , Jonathan Ethier , Adrian Florea

The radio map represents the spatial distribution of spectrum resources within a region, supporting efficient resource allocation and interference mitigation. However, it is difficult to construct a dense radio map as a limited number of…

Computer Vision and Pattern Recognition · Computer Science 2025-07-25 Taiqin Chen , Zikun Zhou , Zheng Fang , Wenzhen Zou , Kangjun Liu , Ke Chen , Yongbing Zhang , Yaowei Wang

As a fundamental data format representing spatial information, depth map is widely used in signal processing and computer vision fields. Massive amount of high precision depth maps are produced with the rapid development of equipment like…

Image and Video Processing · Electrical Eng. & Systems 2022-01-11 Yuyang Wu , Wei Gao

Radio propagation modeling and prediction is fundamental for modern cellular network planning and optimization. Conventional radio propagation models fall into two categories. Empirical models, based on coarse statistics, are simple and…

Information Theory · Computer Science 2021-10-06 Xin Zhang , Xiujun Shu , Bingwen Zhang , Jie Ren , Lizhou Zhou , Xin Chen

The process of decomposing target images into their internal properties is a difficult task due to the inherent ill-posed nature of the problem. The lack of data required to train a network is a one of the reasons why the decomposing…

Computer Vision and Pattern Recognition · Computer Science 2020-01-16 Mingi Lim , Sung-eui Yoon

Unmanned Aerial Vehicles (UAVs) are increasingly essential in various fields such as surveillance, reconnaissance, and telecommunications. This study aims to develop a learning algorithm for the path planning of UAV wireless communication…

Machine Learning · Computer Science 2025-01-20 Joseanne Viana , Boris Galkin , Lester Ho , Holger Claussen

3D city models can be generated from aerial images. However, the calculated DSMs suffer from noise, artefacts, and data holes that have to be manually cleaned up in a time-consuming process. This work presents an approach that automatically…

Computer Vision and Pattern Recognition · Computer Science 2020-12-15 Nando Metzger

A Radio Environment Map (REM) is a powerful tool in enhancing the experience of radio-enabled agents but building such a REM can be a laborious undertaking, especially in three dimensions. This project shows how such a REM of an indoor…

Networking and Internet Architecture · Computer Science 2021-09-16 Ken Mendes

A new wave of wireless services, including virtual reality, autonomous driving and internet of things, is driving the design of new generations of wireless systems to deliver ultra-high data rates, massive number of connected devices and…

Information Theory · Computer Science 2019-12-24 Zhenyu Liu , Lin Zhang , Zhi Ding

In this article, we present a collection of radio map datasets in dense urban setting, which we generated and made publicly available. The datasets include simulated pathloss/received signal strength (RSS) and time of arrival (ToA) radio…

Networking and Internet Architecture · Computer Science 2024-09-17 Çağkan Yapar , Ron Levie , Gitta Kutyniok , Giuseppe Caire