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The intrinsic geometric connections between millimeter-wave (mmWave) signals and the propagation environment can be leveraged for simultaneous localization and mapping (SLAM) in 5G and beyond networks. However, estimated channel parameters…

信号处理 · 电气工程与系统科学 2024-04-17 Ossi Kaltiokallio , Elizaveta Rastorgueva-Foi , Jukka Talvitie , Yu Ge , Henk Wymeersch , Mikko Valkama

In the non-line of sight (NLOS) ultraviolet (UV) scattering communication, the received signals exhibit the characteristics of discrete photoelectrons due to the extremely large path loss. We design and demonstrate an NLOS UV scattering…

信号处理 · 电气工程与系统科学 2018-02-13 Guanchu Wang , Kun Wang , Chen Gong , Difan Zou , Zhimeng Jiang , Zhengyuan Xu

Low Earth Orbit (LEO) satellite communication is a promising approach to providing Internet connectivity to users in many remote areas. As videos are likely to account for most traffic in the LEO satellite network, as in the rest of the…

网络与互联网体系结构 · 计算机科学 2026-04-22 Kyoungjun Park , Zhiyuan He , Cheng Luo , Yi Xu , Lili Qiu , Changhan Ge , Muhammad Muaz

This paper derives optimal spatial scaling and rate control parameters for power-efficient wireless video streaming on portable devices. A video streaming application is studied, which receives a high-resolution and high-quality video…

图像与视频处理 · 电气工程与系统科学 2023-07-18 Christian Herglotz , André Kaup , Stéphane Coulombe , Ahmad Vakili

Video service providers need their delivery systems to be able to adapt to network conditions, user preferences, display settings, and other factors. HTTP Adaptive Streaming (HAS) offers dynamic switching between different video…

图像与视频处理 · 电气工程与系统科学 2025-12-16 Krishna Srikar Durbha , Alan C. Bovik

Existing studies on ultraviolet (UV) non-line-of-sight (NLoS) channel modeling primarily focus on scenarios without any obstacle, which makes them unsuitable for small transceiver elevation angles in most cases. To address this issue, a UV…

信号处理 · 电气工程与系统科学 2025-06-27 Tianfeng Wu , Fang Yang , Tian Cao , Ling Cheng , Yupeng Chen , Jian Song , Julian Cheng , Zhu Han

Internet video delivery has undergone a tremendous explosion of growth over the past few years. However, the quality of video delivery system greatly depends on the Internet bandwidth. Deep Neural Networks (DNNs) are utilized to improve the…

图像与视频处理 · 电气工程与系统科学 2021-09-20 Jiaming Liu , Ming Lu , Kaixin Chen , Xiaoqi Li , Shizun Wang , Zhaoqing Wang , Enhua Wu , Yurong Chen , Chuang Zhang , Ming Wu

Video streaming is a fundamental Internet service, while the quality still cannot be guaranteed especially in poor network conditions such as bandwidth-constrained and remote areas. Existing works mainly work towards two directions:…

网络与互联网体系结构 · 计算机科学 2026-02-04 Tianyi Gong , Zijian Cao , Zixing Zhang , Jiangkai Wu , Xinggong Zhang , Shuguang Cui , Fangxin Wang

Advancements in high-frequency communication technologies using millimeter waves (mmWave), Tera- Hertz (THz), and optical wireless frequency bands are key for extending wireless connectivity beyond 5G. These technologies offer a broader…

最优化与控制 · 数学 2025-07-30 Mohsen Abedi , Alexis A. Dowhuszko , Mehdi Sookhak , Risto Wichman

An indoor, real-time location system (RTLS) can benefit both hospitals and patients by improving clinical efficiency through data-driven optimization of procedures. Bluetooth-based RTLS systems are cost-effective but lack accuracy and…

信号处理 · 电气工程与系统科学 2020-09-09 Guanglin Tang , Yulong Yan , Chenyang Shen , Xun Jia , Meyer Zinn , Zipalkumar Trivedi , Alicia Yingling , Kenneth Westover , Steve Jiang

Radio maps are essential for enhancing wireless communications and localization. However, existing methods for constructing radio maps typically require costly calibration processes to collect location-labeled channel state information…

机器学习 · 计算机科学 2025-10-10 Zheng Xing , Junting Chen

Fingerprint-based localization improves the positioning performance in challenging, non-line-of-sight (NLoS) dominated indoor environments. However, fingerprinting models require an expensive life-cycle management including recording and…

信号处理 · 电气工程与系统科学 2024-10-28 Maximilian Stahlke , George Yammine , Tobias Feigl , Bjoern M. Eskofier , Christopher Mutschler

A wireless video transmission architecture relying on the emerging large-scale multiple-input--multiple-output (LS-MIMO) technique is proposed. Upon using the most advanced High Efficiency Video Coding (HEVC) (also known as H.265), we…

信息论 · 计算机科学 2016-07-12 Shaoshi Yang , Cheng Zhou , Tiejun Lv , Lajos Hanzo

We present Audiovisual SlowFast Networks, an architecture for integrated audiovisual perception. AVSlowFast has Slow and Fast visual pathways that are deeply integrated with a Faster Audio pathway to model vision and sound in a unified…

计算机视觉与模式识别 · 计算机科学 2020-03-10 Fanyi Xiao , Yong Jae Lee , Kristen Grauman , Jitendra Malik , Christoph Feichtenhofer

Images captured from low-light scenes often suffer from severe degradations, including low visibility, color cast and intensive noises, etc. These factors not only affect image qualities, but also degrade the performance of downstream…

计算机视觉与模式识别 · 计算机科学 2021-12-10 Risheng Liu , Long Ma , Tengyu Ma , Xin Fan , Zhongxuan Luo

Holographic-type communication brings an immersive tele-holography experience by delivering holographic contents to users. As the direct representation of holographic contents, hologram videos are naturally three-dimensional representation,…

信号处理 · 电气工程与系统科学 2025-03-10 Yiming Jiang , Yanwei Liu , Jinxia Liu , Antonios Argyriou , Yifei Chen , Wen Zhang

Nowadays, real-time vehicle applications increasingly rely on video acquisition and processing to detect or even identify vehicles and obstacles in the driving environment. In this letter, we propose an algorithm that allows reinforcing…

计算机视觉与模式识别 · 计算机科学 2023-11-07 Mohamed Aymen Labiod , Mohamed Gharbi , François-Xavier Coudoux , Patrick Corlay

This survey presents the evolution of live media streaming and the technological developments behind today's IP-based low-latency live streaming systems. Live streaming primarily involves capturing, encoding, packaging and delivering…

网络与互联网体系结构 · 计算机科学 2025-04-01 Abdelhak Bentaleb , May Lim , Mehmet N. Akcay , Ali C. Begen , Sarra Hammoudi , Roger Zimmermann

In this paper, we explore the space-time video super-resolution task, which aims to generate a high-resolution (HR) slow-motion video from a low frame rate (LFR), low-resolution (LR) video. A simple solution is to split it into two…

计算机视觉与模式识别 · 计算机科学 2020-02-27 Xiaoyu Xiang , Yapeng Tian , Yulun Zhang , Yun Fu , Jan P. Allebach , Chenliang Xu

Wireless video streaming has traditionally been considered an extremely power-hungry operation. Existing approaches optimize the camera and communication modules individually to minimize their power consumption. However, the joint redesign…

新兴技术 · 计算机科学 2017-07-28 Saman Naderiparizi , Mehrdad Hessar , Vamsi Talla , Shyamnath Gollakota , Joshua R. Smith