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Temporal convolutions have been the paradigm of choice in action segmentation, which enhances long-term receptive fields by increasing convolution layers. However, high layers cause the loss of local information necessary for frame…

计算机视觉与模式识别 · 计算机科学 2022-05-20 Jiahui Wang , Zhenyou Wang , Shanna Zhuang , Hui Wang

The estimation of large and extreme image rotation plays a key role in multiple computer vision domains, where the rotated images are related by a limited or a non-overlapping field of view. Contemporary approaches apply convolutional…

计算机视觉与模式识别 · 计算机科学 2024-03-12 Shay Dekel , Yosi Keller , Martin Cadik

Channel coding from 2G to 5G has assumed the inputs bits at the physical layer to be uniformly distributed. However, hybrid automatic repeat request acknowledgement (HARQ-ACK) bits transmitted in the uplink are inherently non-uniformly…

信号处理 · 电气工程与系统科学 2026-02-20 Akash Doshi , Pinar Sen , Kirill Ivanov , Wei Yang , June Namgoong , Runxin Wang , Rachel Wang , Taesang Yoo , Jing Jiang , Tingfang Ji

This letter proposes a deep-learning (DL)-based multi-user channel state information (CSI) feedback framework for massive multiple-input multiple-output systems, where the deep joint source-channel coding (DJSCC) is utilized to improve the…

机器学习 · 计算机科学 2025-05-27 Hengwei Zhang , Minghui Wu , Li Qiao , Ling Liu , Ziqi Han , Zhen Gao

Wireless communications are typically subject to complex channel dynamics, requiring the transmission of pilot sequences to estimate and equalize such effects and correctly receive information bits. This is especially true in 6G…

信号处理 · 电气工程与系统科学 2025-02-14 Bruno De Filippo , Carla Amatetti , Alessandro Vanelli-Coralli

This paper introduces a deep learning approach to dynamic spectrum access, leveraging the synergy of multi-modal image and spectrum data for the identification of potential transmitters. We consider an edge device equipped with a camera…

网络与互联网体系结构 · 计算机科学 2023-12-22 Yalin E. Sagduyu , Tugba Erpek , Aylin Yener , Sennur Ulukus

The design of precoding plays a crucial role in achieving a high downlink sum-rate in multiuser multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) systems. In this correspondence, we propose a deep…

信息论 · 计算机科学 2024-04-26 Yiran Guo , Wei Chen , Jialong Xu , Lun Li , Bo Ai

We introduce, design, and evaluate a set of universal receiver beamforming techniques. Our approach and system DEFORM, a Deep Learning (DL) based RX beamforming achieves significant gain for multi antenna RF receivers while being agnostic…

网络与互联网体系结构 · 计算机科学 2022-03-21 Hai N. Nguyen , Guevara Noubir

Attention-based beamformers have recently been shown to be effective for multi-channel speech recognition. However, they are less capable at capturing local information. In this work, we propose a 2D Conv-Attention module which combines…

音频与语音处理 · 电气工程与系统科学 2021-05-18 Bhargav Pulugundla , Yang Gao , Brian King , Gokce Keskin , Harish Mallidi , Minhua Wu , Jasha Droppo , Roland Maas

Object detection in Remote Sensing Images (RSI) is a critical task for numerous applications in Earth Observation (EO). Differing from object detection in natural images, object detection in remote sensing images faces challenges of…

计算机视觉与模式识别 · 计算机科学 2024-06-19 Bissmella Bahaduri , Zuheng Ming , Fangchen Feng , Anissa Mokraou

Cross-attention is the primary interface through which text conditions latent diffusion models, yet its step-wise multi-resolution dynamics remain under-characterized, limiting principled training-free control. We cast diffusion…

计算机视觉与模式识别 · 计算机科学 2026-03-31 Seunghun Oh , Unsang Park

The superimposed pilot transmission scheme offers substantial potential for improving spectral efficiency in MIMO-OFDM systems, but it presents significant challenges for receiver design due to pilot contamination and data interference. To…

信息论 · 计算机科学 2025-07-15 Xinjie Li , Xingyu Zhou , Yixiao Cao , Jing Zhang , Chao-Kai Wen , Xiao Li , Shi Jin

In this paper, we consider a distributed reception scenario where a transmitter broadcasts a signal to multiple geographically separated receive nodes over fading channels, and each node forwards a few bits representing a processed version…

信息论 · 计算机科学 2015-06-19 Junil Choi , David J. Love , Patrick Bidigare

This paper proposes an uplink optical wireless communication (OWC) link design that can be used by data centers to support communication in spine and leaf architectures between the top of rack leaf switches and large spine switches whose…

信号处理 · 电气工程与系统科学 2021-11-01 Abrar S. Alhazmi , Sanaa H. Mohamed , Osama Z. Alsulami , T. E. H. El-Gorashi , Jaafar M. H. Elmirghani

In this paper, we propose a novel low complexity time domain (TD) oversampling receiver framework under affine frequency division multiplexing (AFDM) waveforms for joint channel estimation and data detection (JCEDD). Leveraging a…

信号处理 · 电气工程与系统科学 2024-10-08 Kuranage Roche Rayan Ranasinghe , Yao Ge , Giuseppe Thadeu Freitas de Abreu , Yong Liang Guan

Spectral bias implies an imbalance in training dynamics, whereby high-frequency components may converge substantially more slowly than low-frequency ones. To alleviate this issue, we propose a cross-attention-based architecture that…

数值分析 · 数学 2025-12-23 Xiaodong Feng , Tao Tang , Xiaoliang Wan , Tao Zhou

This paper presents enhanced receiver metrics for joint estimation-detection in short blocklength transmissions, addressing scenarios with unknown channel state information and low or sparse training resource density. We show that it is…

信息论 · 计算机科学 2025-10-08 Mody Sy , Raymond Knopp

This work introduces Cross-Attentive Modulation (CAM) tokens, which are tokens whose initial value is learned, gather information through cross-attention, and modulate the nodes and edges accordingly. These tokens are meant to improve the…

社会与信息网络 · 计算机科学 2024-09-23 Félix Marcoccia , Cédric Adjih , Paul Mühlethaler

The use of low-resolution analog-to-digital converters (ADCs) can significantly reduce power consumption and hardware cost. However, their resulting severe nonlinear distortion makes reliable data transmission challenging. For orthogonal…

信息论 · 计算机科学 2019-01-31 Hanqing Wang , Wan-Ting Shih , Chao-Kai Wen , Shi Jin

In this work we design a receiver that iteratively passes soft information between the channel estimation and data decoding stages. The receiver incorporates sparsity-based parametric channel estimation. State-of-the-art sparsity-based…

信息论 · 计算机科学 2018-09-19 Thomas L. Hansen , Peter B. Jørgensen , Mihai-Alin Badiu , Bernard H. Fleury