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Future 6G networks will host massive numbers of embodied intelligent agents, which require real-time channel awareness over continuous-space for autonomous decision-making. By pre-obtaining location-specific channel state information (CSI),…

信号处理 · 电气工程与系统科学 2026-04-02 Tianrun Qi , Cheng-Xiang Wang , Chen Huang , Junling Li , John S Thompson

Real-world environment-derived point clouds invariably exhibit noise across varying modalities and intensities. Hence, point cloud denoising (PCD) is essential as a preprocessing step to improve downstream task performance. Deep learning…

计算机视觉与模式识别 · 计算机科学 2025-08-19 Chengwei Zhang , Xueyi Zhang , Mingrui Lao , Tao Jiang , Xinhao Xu , Wenjie Li , Fubo Zhang , Longyong Chen

For an orthogonal frequency-division multiplexing (OFDM) system over a doubly selective (DS) channel, a large number of pilot subcarriers are needed to estimate the numerous channel parameters, resulting in low spectral efficiency. In this…

信号处理 · 电气工程与系统科学 2020-05-05 Qibo Qin , Lin Gui , Bo Gong , Xiang Ren , Wen Chen

Coordinated multipoint (CoMP) systems incur substantial resource consumption due to the management of backhaul links and the coordination among various base stations (BSs). Accurate prediction of coordinated spectral efficiency (CSE) can…

信号处理 · 电气工程与系统科学 2024-08-15 Zhixing Chen , Zhaoyu Fan , Yang Li , Yibin Kang , Qi Yan , Qingjiang Shi

Access to real-world healthcare data is limited by stringent privacy regulations and data imbalances, hindering advancements in research and clinical applications. Synthetic data presents a promising solution, yet existing methods often…

机器学习 · 计算机科学 2025-03-11 Nicholas I-Hsien Kuo , Blanca Gallego , Louisa Jorm

The growing size of point clouds enlarges consumptions of storage, transmission, and computation of 3D scenes. Raw data is redundant, noisy, and non-uniform. Therefore, simplifying point clouds for achieving compact, clean, and uniform…

计算机视觉与模式识别 · 计算机科学 2022-03-18 Yuanqi Li , Jianwei Guo , Xinran Yang , Shun Liu , Jie Guo , Xiaopeng Zhang , Yanwen Guo

In this paper, we have evaluated various methods of time-frequency-selective fading channels estimation in OFDM system and some of them improved under time varying conditions. So, these different techniques will be studied through different…

其他计算机科学 · 计算机科学 2012-05-16 Zaier Aida , Ridha Bouallegue

Massive Multiple Input Multiple Output (MIMO) is critical for boosting 6G wireless network capacity. Nevertheless, high dimensional Channel State Information (CSI) acquisition becomes the bottleneck of 6G massive MIMO system. Recently,…

信号处理 · 电气工程与系统科学 2026-02-09 Haoyu Wang , Zhi Sun , Shuangfeng Han , Xiaoyun Wang , Shidong Zhou , Zhaocheng Wang

Designing a module or mechanism that enables a network to maintain low parameters and FLOPs without sacrificing accuracy and throughput remains a challenge. To address this challenge and exploit the redundancy within feature map channels,…

计算机视觉与模式识别 · 计算机科学 2025-02-04 Haiduo Huang , Tian Xia , Wenzhe zhao , Pengju Ren

6G system is evolving toward full-spectrum coverage,ultra-wide bandwidth, and high mobility, resulting in increasingly complex propagation environments. The deep integration of communication and sensing is widely recognized as a core 6G…

信息论 · 计算机科学 2026-01-27 Xuejian Zhang , Ruisi He , Mi Yang , Zhengyu Zhang , Ziyi Qi

Point cloud, as a 3D representation, is widely used in autonomous driving, virtual reality (VR), and augmented reality (AR). However, traditional communication systems think that the point cloud's semantic information is irrelevant to…

多媒体 · 计算机科学 2023-07-13 Xiaoyi Liu , Haotai Liang , Zhicheng Bao , Chen Dong , Xiaodong Xu

Channel charting is a self-supervised learning technique whose objective is to reconstruct a map of the radio environment, called channel chart, by taking advantage of similarity relationships in high-dimensional channel state information.…

信息论 · 计算机科学 2023-09-08 Phillip Stephan , Florian Euchner , Stephan ten Brink

Mobile Edge Computing (MEC) holds excellent potential in Congestion Management (CM) of 6G vehicular networks. A reasonable schedule of MEC ensures a more reliable and efficient CM system. Unfortunately, existing parallel and sequential…

网络与互联网体系结构 · 计算机科学 2023-06-16 Ke Deng , Zhiyuan He , Haohan Lin , Hao Zhang , Desheng Wang

In this work, we use real-world data in order to evaluate and validate a machine learning (ML)-based algorithm for physical layer functionalities. Specifically, we apply a recently introduced Gaussian mixture model (GMM)-based algorithm in…

信息论 · 计算机科学 2022-07-29 Nurettin Turan , Benedikt Fesl , Moritz Grundei , Michael Koller , Wolfgang Utschick

In this paper, we propose a model-driven channel estimation method utilizing a convolutional neural network (CNN) derived from image super-resolution (SR). Instead of completely abandoning traditional communication modules as data-driven…

信号处理 · 电气工程与系统科学 2019-12-02 Xin Ru , Li Wei , Youyun Xu

Localized channel modeling is crucial for offline performance optimization of 5G cellular networks, but the existing channel models are for general scenarios and do not capture local geographical structures. In this paper, we propose a…

信号处理 · 电气工程与系统科学 2023-03-07 Shutao Zhang , Xinzhi Ning , Xi Zheng , Qingjiang Shi , Tsung-Hui Chang , Zhi-Quan Luo

Point cloud upsampling focuses on generating a dense, uniform and proximity-to-surface point set. Most previous approaches accomplish these objectives by carefully designing a single-stage network, which makes it still challenging to…

计算机视觉与模式识别 · 计算机科学 2022-10-11 Hang Du , Xuejun Yan , Jingjing Wang , Di Xie , Shiliang Pu

To estimate the channel correlation matrix (CCM) in areas where channel information cannot be collected in advance, this paper proposes a way to spatially extrapolate CCM based on the calibration of the surface roughness parameters of…

信号处理 · 电气工程与系统科学 2024-10-15 Heling Zhang , Xiujun Zhang , Xiaofeng Zhong , Shidong Zhou

The detection of point-sources in microwave maps is a critical step in the analysis of the Cosmic Microwave Background (CMB) data. If not properly removed, these sources have adverse effects on the estimation of the power-spectrum and/or…

天体物理学 · 物理学 2009-07-14 R. Vio , P. Andreani

Massive MIMO is a promising technique for future 5G communications due to its high spectrum and energy efficiency. To realize its potential performance gain, accurate channel estimation is essential. However, due to massive number of…

信息论 · 计算机科学 2016-11-17 Zhen Gao , Linglong Dai , Wei Dai , Byonghyo Shim , Zhaocheng Wang