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Machine learning (ML) methods are ubiquitous in wireless communication systems and have proven powerful for applications including radio-frequency (RF) fingerprinting, automatic modulation classification, and cognitive radio. However, the…

Signal Processing · Electrical Eng. & Systems 2021-06-29 Hsuan-Tung Peng , Joshua Lederman , Lei Xu , Thomas Ferreira de Lima , Chaoran Huang , Bhavin Shastri , David Rosenbluth , Paul Prucnal

Active learning strategies aim to train high-performance models with minimal labeled data by selecting the most informative instances for labeling. However, existing methods for assessing data informativeness often fail to align directly…

Computer Vision and Pattern Recognition · Computer Science 2025-05-07 Zhixuan Liang , Xingyu Zeng , Rui Zhao , Ping Luo

Federated learning (FL) aims to train machine learning models in the decentralized system consisting of an enormous amount of smart edge devices. Federated averaging (FedAvg), the fundamental algorithm in FL settings, proposes on-device…

Machine Learning · Computer Science 2020-12-17 Xin Yao , Tianchi Huang , Rui-Xiao Zhang , Ruiyu Li , Lifeng Sun

We propose Frequency-Guided Attention (FGA), a lightweight upsampling module for single image super-resolution. Conventional upsamplers, such as Sub-Pixel Convolution, are efficient but frequently fail to reconstruct high-frequency details…

Computer Vision and Pattern Recognition · Computer Science 2025-08-26 Daejune Choi , Youchan No , Jinhyung Lee , Duksu Kim

We introduce an improved microwave calibration method for use in a cryogenic environment, based on a traditional three-standard calibration, the Thru-Reflect-Line (TRL) calibration. The modified calibration method takes advantage of…

Instrumentation and Detectors · Physics 2013-03-27 Jen-Hao Yeh , Steven M. Anlage

The design and deployment of fifth-generation (5G) wireless networks pose significant challenges due to the increasing number of wireless devices. Path loss has a landmark importance in network performance optimization, and accurate…

Machine Learning · Computer Science 2023-10-03 Ibrahim Yazıcı , Emre Gures

Federated Learning (FL) is a collaborative machine learning (ML) framework that combines on-device training and server-based aggregation to train a common ML model among distributed agents. In this work, we propose an asynchronous FL design…

Machine Learning · Computer Science 2025-12-04 Chung-Hsuan Hu , Zheng Chen , Erik G. Larsson

The calibration procedures for data collected for Argus and the 4mm Receiver instruments on the GBT are presented. The measured beam size, aperture efficiency, and main-beam efficiency are derived for the range of observing frequencies…

Instrumentation and Methods for Astrophysics · Physics 2019-06-07 David T. Frayer , Ronald J. Maddalena , Steven White , Galen Watts , Amanda Kepley , Jialu Li , Andrew I. Harris

Wildlife conservation using continuous monitoring of environmental factors and biomedical classification, which generate a vast amount of sensor data, is a challenge due to limited bandwidth in the case of remote monitoring. It becomes…

Machine Learning · Computer Science 2023-04-25 Abhishek Ramdas Nair , Pallab Kumar Nath , Shantanu Chakrabartty , Chetan Singh Thakur

Federated Learning (FL) refers to learning a high quality global model based on decentralized data storage, without ever copying the raw data. A natural scenario arises with data created on mobile phones by the activity of their users.…

Machine Learning · Computer Science 2023-01-19 Yihan Jiang , Jakub Konečný , Keith Rush , Sreeram Kannan

Federated learning (FL) triggers intra-client and inter-client class imbalance, with the latter compared to the former leading to biased client updates and thus deteriorating the distributed models. Such a bias is exacerbated during the…

Machine Learning · Computer Science 2024-12-24 Chenguang Xiao , Zheming Zuo , Shuo Wang

In this letter, we study the reference signal-aided channel estimation concept which is a crucial requirement to address the realistic performance of spatial media-based modulation (SMBM) systems where the radio frequency mirrors are…

Signal Processing · Electrical Eng. & Systems 2020-09-29 Akif Kabacı , Mehmet Başaran , Hakan Ali Çırpan

Recent advancements in table-based reasoning have expanded beyond factoid-level QA to address insight-level tasks, where systems should synthesize implicit knowledge in the table to provide explainable analyses. Although effective, existing…

Computation and Language · Computer Science 2025-06-03 Kwangwook Seo , Donguk Kwon , Dongha Lee

Perfect alignment in chosen beam sectors at both transmit- and receive-nodes is required for beamforming in mmWave bands. Current 802.11ad WiFi and emerging 5G cellular standards spend up to several milliseconds exploring different sector…

Signal Processing · Electrical Eng. & Systems 2021-02-16 Batool Salehi , Mauro Belgiovine , Sara Garcia Sanchez , Jennifer Dy , Stratis Ioannidis , Kaushik Chowdhury

We apply machine learning methods to build a time-domain model for gravitational waveforms from binary black hole mergers, called mlgw. The dimensionality of the problem is handled by representing the waveform's amplitude and phase using a…

In this survey, we analyze the newest machine learning (ML) techniques for optical orthogonal frequency division multiplexing (O-OFDM)-based optical communications. ML has been proposed to mitigate channel and transceiver imperfections. For…

Machine Learning · Computer Science 2021-05-10 Hichem Mrabet , Elias Giaccoumidis , Iyad Dayoub

Gradient Boosting (GB) is a popular methodology used to solve prediction problems by minimizing a differentiable loss function, $L$. GB performs very well on tabular machine learning (ML) problems; however, as a pure ML solver it lacks the…

Machine Learning · Computer Science 2022-11-08 Michael T. Horrell

Neural network (NN) based methods are applied to the detection of radio frequency interference (RFI) in post-correlation,post-calibration time/frequency data. While calibration doesaffect RFI for the sake of this work a reduced dataset…

Instrumentation and Methods for Astrophysics · Physics 2020-07-31 Kyle Harrison , Amit Kumar Mishra

Federated learning (FL) is a promising way to use the computing power of mobile devices while maintaining the privacy of users. Current work in FL, however, makes the unrealistic assumption that the users have ground-truth labels on their…

Machine Learning · Computer Science 2021-03-10 Zhengming Zhang , Yaoqing Yang , Zhewei Yao , Yujun Yan , Joseph E. Gonzalez , Michael W. Mahoney

The impressive performance of large language models (LLMs) arises from their massive scale and heterogeneous module composition. However, this structural heterogeneity introduces additional optimization challenges. While adaptive optimizers…

Machine Learning · Computer Science 2026-05-08 Ziqing Wen , Zhouyang Liu , Jiahuan Wang , Ping Luo , Li Shen , Dongsheng Li , Tao Sun