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An efficient modulation of backscattered energy is one of the key requirements for enabling efficient wireless communication channels. Typical architectures, being based on either electronically or mechanically modulated reflectors, cannot…

Masked Image Modeling (MIM) has garnered significant attention in self-supervised learning, thanks to its impressive capacity to learn scalable visual representations tailored for downstream tasks. However, images inherently contain…

Computer Vision and Pattern Recognition · Computer Science 2025-03-04 Wenzhao Xiang , Chang Liu , Hongyang Yu , Xilin Chen

We propose a new approach to model ground penetrating radar signals that propagate through a homogeneous and isotropic medium, and are scattered at thin planar fractures of arbitrary dip, azimuth, thickness and material filling. We use…

Geophysics · Physics 2017-01-06 A. Shakas , N. Linde

Wireless systems are getting deployed in many new environments with different antenna heights, frequency bands and multipath conditions. This has led to an increasing demand for more channel measurements to understand wireless propagation…

Information Theory · Computer Science 2016-11-18 Muhammad Nazmul Islam , Byoung-Jo J. Kim , Paul Henry , Eric Rozner

Millimeter-wave has become an integral part of 5G networks to meet the ever-increasing demand for user data throughput. Employing higher carrier frequencies introduces new challenges for the propagation channel such as higher path loss and…

Networking and Internet Architecture · Computer Science 2019-10-28 Umur Karabulut , Ahmad Awada , Ingo Viering , Andre Noll Barreto , Gerhard P. Fettweis

Neural network modeling is a key technology of science and research and a platform for deployment of algorithms to systems. In wireless communications, system modeling plays a pivotal role for interference cancellation with specifically…

Signal Processing · Electrical Eng. & Systems 2024-10-02 Gerald Enzner , Aleksej Chinaev , Svantje Voit , Aydin Sezgin

Deep image compression systems mainly contain four components: encoder, quantizer, entropy model, and decoder. To optimize these four components, a joint rate-distortion framework was proposed, and many deep neural network-based methods…

Image and Video Processing · Electrical Eng. & Systems 2020-07-27 Zhisheng Zhong , Hiroaki Akutsu , Kiyoharu Aizawa

In these last years, many studies have focalized on the design of reliable underwater acoustic communication systems. However, the ocean acoustic communication channel exhibits strong amplitude and phase fluctuations and the phenomena of…

Signal Processing · Electrical Eng. & Systems 2019-07-16 Yasin Yousif Al-Aboosi , Hussein A. Abdulnabi

This paper tackles the challenge of wideband MIMO channel estimation within indoor millimeter-wave scenarios. Our proposed approach exploits the integrated sensing and communication paradigm, where sensing information aids in channel…

Signal Processing · Electrical Eng. & Systems 2023-09-27 Silvia Mura , Marouan Mizmizi , Umberto Spagnolini , Athina Petropulu

The wavelet scattering transform creates geometric invariants and deformation stability. In multiple signal domains, it has been shown to yield more discriminative representations compared to other non-learned representations and to…

Despite the tremendous success in computer vision, deep convolutional networks suffer from serious computation costs and redundancies. Although previous works address this issue by enhancing diversities of filters, they have not considered…

Computer Vision and Pattern Recognition · Computer Science 2022-01-19 Yang Hu , Guihua Wen , Mingnan Luo , Dan Dai , Wenming Cao , Zhiwen Yu , Wendy Hall

Convolutional neural network (CNN), with ability of feature learning and nonlinear mapping, has demonstrated its effectiveness in prognostics and health management (PHM). However, explanation on the physical meaning of a CNN architecture…

Computer Vision and Pattern Recognition · Computer Science 2023-03-24 Tianfu Li , Zhibin Zhao , Chuang Sun , Li Cheng , Xuefeng Chen , Ruqiang Yan , Robert X. Gao

TeraHertz (THz) communications are envisioned as a promising technology, owing to its unprecedented multi-GHz bandwidth. One fundamental challenge when moving to new spectrum is to understand the science of radio propagation and develop an…

Information Theory · Computer Science 2021-02-01 Yi Chen , Yuanbo Li , Chong Han , Ziming Yu , Guangjian Wang

The Transfer Matrix Method is a powerful numerical tool for simulating wave propagation in layered media. It has been widely applied in many fields, although its use is typically restricted to passive media. In this paper, we develop the…

As the main way of underwater wireless communication, underwater acoustic communication is one of the focuses of ocean research. Compared with the free space wireless communication channel, the underwater acoustic channel suffers from more…

Other Computer Science · Computer Science 2022-04-21 Hai-Peng Ren , Yang Zhao

The distribution of fracture network is crucial to characterize the behaviors of flow field and solute transport, especially for enhanced geothermal systems, as fractures provide preferential flow paths. However, estimating the parameters…

Geophysics · Physics 2023-02-08 Guodong Chen , Xin Luo , Jiu Jimmy Jiao , Chuanyin Jiang

Site-specific channel inference plays a critical role in the design and evaluation of next-generation wireless communication systems by considering the surrounding propagation environment. However, traditional methods are unscalable.…

Image and Video Processing · Electrical Eng. & Systems 2026-04-14 Junzhe Song , Ruisi He , Mi Yang , Zhengyu Zhang , Shuaiqi Gao , Bo Ai , Zhangdui Zhong

Deep Neural Networks, particularly Convolutional Neural Networks (ConvNets), have achieved incredible success in many vision tasks, but they usually require millions of parameters for good accuracy performance. With increasing applications…

Computer Vision and Pattern Recognition · Computer Science 2022-03-30 Yuhuang Hu , Shih-Chii Liu

In a realistic wireless environment, the multi-antenna channel usually exhibits spatially correlation fading. This is more emphasized when a large number of antennas is densely deployed, known as holographic massive MIMO (multiple-input…

Information Theory · Computer Science 2022-02-03 Özlem Tuğfe Demir , Emil Björnson , Luca Sanguinetti

Distributed multiple-input multiple-output (MIMO), also known as cell-free massive MIMO, has emerged as a promising technology for sixth-generation (6G) wireless networks. This letter introduces an indoor channel measurement campaign…

Signal Processing · Electrical Eng. & Systems 2025-11-06 Yingjie Xu , Xuesong Cai , Sara Willhammar , Fredrik Tufvesson