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Dynamic Scene Graph Generation (DSGG) focuses on identifying visual relationships within the spatial-temporal domain of videos. Conventional approaches often employ multi-stage pipelines, which typically consist of object detection,…

计算机视觉与模式识别 · 计算机科学 2024-05-28 Guan Wang , Zhimin Li , Qingchao Chen , Yang Liu

Superimposed pilot (SIP) transmission improves spectral efficiency by eliminating the dedicated pilot overhead required in orthogonal pilot (OP)-based schemes. However, SIP suffers from severe pilot-data coupling, which leads to a critical…

信息论 · 计算机科学 2026-05-29 Xinjie Li , Xingyu Zhou , Jing Zhang , Chao-Kai Wen , Xiao Li , Shi Jin

This paper investigates a full-duplex orthogonal-frequency-division multiple access (OFDMA) based multiple unmanned aerial vehicles (UAVs)-enabled wireless-powered Internet-of-Things (IoT) networks. In this paper, a swarm of UAVs is first…

信息论 · 计算机科学 2020-08-10 Han-Ting Ye , Xin Kang , Jingon Joung , Ying-Chang Liang

This paper investigates reconfigurable intelligent surface (RIS)-aided frequency division duplexing (FDD) communication systems. Since the downlink and uplink signals are simultaneously transmitted in FDD, the phase shifts at the RIS should…

信息论 · 计算机科学 2024-01-23 Gyoseung Lee , Hyeongtaek Lee , Donghwan Kim , Jaehoon Chung , A. Lee. Swindlehurst , Junil Choi

The data loss caused by unreliable network seriously impacts the results of remote visual SLAM systems. From our experiment, a loss of less than 1 second of data can cause a visual SLAM algorithm to lose tracking. We present a novel…

机器人学 · 计算机科学 2022-02-24 Yu-Ping Wang , Zi-Xin Zou , Cong Wang , Yue-Jiang Dong , Lei Qiao , Dinesh Manocha

Recent advances in robust semi-supervised learning (SSL) typically filter out-of-distribution (OOD) information at the sample level. We argue that an overlooked problem of robust SSL is its corrupted information on semantic level,…

计算机视觉与模式识别 · 计算机科学 2023-05-31 Yu Wang , Pengchong Qiao , Chang Liu , Guoli Song , Xiawu Zheng , Jie Chen

We consider a scheduling problem pertinent to a base station (BS) that serves heterogeneous users (UEs). We focus on a downlink model, with users that are either interested in large throughput, low latency (the time difference between the…

信息论 · 计算机科学 2023-10-24 Kumar Saurav , Ashok Kumar Reddy Chavva

In this paper, we study asynchronous federated learning (FL) in a wireless distributed learning network (WDLN). To allow each edge device to use its local data more efficiently via asynchronous FL, transmission scheduling in the WDLN for…

信息论 · 计算机科学 2021-08-31 Hyun-Suk Lee , Jang-Won Lee

The recently proposed orthogonal delay-Doppler division multiplexing (ODDM) modulation, which is a delay-Doppler (DD) domain multi-carrier (DDMC) modulation scheme based on the DD domain orthogonal pulse (DDOP), is studied. We first revisit…

信息论 · 计算机科学 2026-05-11 Hai Lin , Jinhong Yuan , Wei Yu , Jingxian Wu , Lajos Hanzo

A fundamental task in wireless communication is Channel Estimation: Compute the channel parameters a signal undergoes while traveling from a transmitter to a receiver. In the case of delay-Doppler channel, a widely used method is the…

信息论 · 计算机科学 2015-03-20 Alexander Fish , Shamgar Gurevich , Ronny Hadani , Akbar Sayeed , Oded Schwartz

Spatio-Temporal Graph (STG) forecasting is a fundamental task in many real-world applications. Spatio-Temporal Graph Neural Networks have emerged as the most popular method for STG forecasting, but they often struggle with temporal…

机器学习 · 计算机科学 2023-09-26 Yutong Xia , Yuxuan Liang , Haomin Wen , Xu Liu , Kun Wang , Zhengyang Zhou , Roger Zimmermann

Wireless time-sensitive networking (WTSN) is essential for Industrial Internet of Things. We address the problem of minimizing time slots needed for WTSN transmissions while ensuring reliability subject to interference constraints -- an…

信号处理 · 电气工程与系统科学 2025-01-22 Zhouyou Gu , Jihong Park , Branka Vucetic , Jinho Choi

Device-to-device (D2D) or Sidelink aided communication is regarded as one of the most promising technologies to improve the spectral efficiency of the 5G and beyond communication system. However, two main challenges exist: 1) the selection…

信息论 · 计算机科学 2022-02-24 Shamganth Kumarapandian , Qasim Zeeshan Ahmed , Faheem A. Khan

Software-defined networking (SDN) based low earth orbit (LEO) satellite networks leverage the SDN's benefits of the separation of data plane and control plane, control plane programmability, and centralized control to alleviate the problem…

网络与互联网体系结构 · 计算机科学 2025-04-21 Zhiyun Jiang , Wei Li , Menglong Yang

Evolutionary transfer optimization(ETO) serves as "a new frontier in evolutionary computation research", which will avoid zero reuse of experience and knowledge from solved problems in traditional evolutionary computation. In scheduling…

神经与进化计算 · 计算机科学 2023-06-29 Wendi Xu , Xianpeng Wang

In this paper, we describe a general algorithmic framework for solving linear signal or feature fusion optimization problems in a distributed setting, for example in a wireless sensor network (WSN). These problems require linearly combining…

信号处理 · 电气工程与系统科学 2023-05-12 Cem Ates Musluoglu , Alexander Bertrand

This paper investigates an OFDM-based over-the-air federated learning (OTA-FL) system, where multiple mobile devices, e.g., unmanned aerial vehicles (UAVs), transmit local machine learning (ML) models to a central parameter server (PS) for…

信号处理 · 电气工程与系统科学 2025-08-29 Xiaoyan Ma , Shahryar Zehtabi , Taejoon Kim , Christopher G. Brinton

We consider the problem of scheduling and power allocation for the downlink of a 5G cellular system operating in the millimeter wave (mmWave) band and serving two sets of users: fix-rate (FR) users typically seen in device-to-device (D2D)…

信息论 · 计算机科学 2017-06-28 Alessandro Brighente , Stefano Tomasin

Earth observation satellites generate large amounts of real-time data for monitoring and managing time-critical events such as disaster relief missions. This presents a major challenge for satellite-to-ground communications operating under…

网络与互联网体系结构 · 计算机科学 2025-03-19 Sheikh Salman Hassan , Loc X. Nguyen , Yan Kyaw Tun , Zhu Han , Choong Seon Hong

An energy-efficient design is proposed under specific statistical quality-of-service (QoS) guarantees for delay-sensitive traffic in the downlink orthogonal frequency-division multiple-access (OFDMA) networks. This design is based on Wu's…

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