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Low earth orbit (LEO) satellite constellation-enabled communication networks are expected to be an important part of many Internet of Things (IoT) deployments due to their unique advantage of providing seamless global coverage. In this…

We propose an online learning algorithm for a class of machine learning models under a separable stochastic approximation framework. The essence of our idea lies in the observation that certain parameters in the models are easier to…

机器学习 · 计算机科学 2023-05-23 Min Gan , Xiang-xiang Su , Guang-yong Chen , Jing Chen

In this letter, we derive an expression for the achievable rate in a multiple-input multiple-output (MIMO) system assisted by a beyond-diagonal reconfigurable intelligent surface (BD-RIS) when the channels to and from the BD-RIS are…

信息论 · 计算机科学 2025-04-11 Ignacio Santamaria , Jesus Gutierrez , Mohammad Soleymani , Eduard Jorswieck

Machine learning (ML) starts to be widely used to enhance the performance of multi-user multiple-input multiple-output (MU-MIMO) receivers. However, it is still unclear if such methods are truly competitive with respect to conventional…

信息论 · 计算机科学 2021-07-01 Mathieu Goutay , Fayçal Ait Aoudia , Jakob Hoydis , Jean-Marie Gorce

The global navigation satellite systems (GNSS) play a vital role in transport systems for accurate and consistent vehicle localization. However, GNSS observations can be distorted due to multipath effects and non-line-of-sight (NLOS)…

机器人学 · 计算机科学 2024-02-20 Haoming Zhang , Zhanxin Wang , Heike Vallery

This paper studies the integration of machine-learned advice in overlay networks in order to adapt their topology to the incoming demand. Such demand-aware systems have recently received much attention, for example in the context of data…

分布式、并行与集群计算 · 计算机科学 2026-03-27 Julien Dallot , Caio Caldeira , Arash Pourdamghani , Olga Goussevskaia , Stefan Schmid

A precise incident wave angle estimation in aerial communication is a key enabler in sixth-generation wireless communication network. With this goal, a generic 3-dimensional (3D) channel model is analyzed for air-to-air (A2A) networks under…

信号处理 · 电气工程与系统科学 2024-03-29 Eray Guven , Gunes Karabulut Kurt

We propose a method that substantially improves the efficiency of deep distance metric learning based on the optimization of the triplet loss function. One epoch of such training process based on a naive optimization of the triplet loss…

计算机视觉与模式识别 · 计算机科学 2019-04-19 Thanh-Toan Do , Toan Tran , Ian Reid , Vijay Kumar , Tuan Hoang , Gustavo Carneiro

Semi-Supervised Learning (SSL) has advanced classification tasks by inputting both labeled and unlabeled data to train a model jointly. However, existing SSL methods only consider the unlabeled data whose predictions are beyond a fixed…

计算机视觉与模式识别 · 计算机科学 2022-05-24 Zechen Liang , Yuan-Gen Wang , Wei Lu , Xiaochun Cao

Open-set recognition and adversarial defense study two key aspects of deep learning that are vital for real-world deployment. The objective of open-set recognition is to identify samples from open-set classes during testing, while…

计算机视觉与模式识别 · 计算机科学 2022-02-15 Rui Shao , Pramuditha Perera , Pong C. Yuen , Vishal M. Patel

Integrated sensing and communications (ISAC) is envisioned as one of the key enablers of next-generation wireless systems, offering improved hardware, spectral, and energy efficiencies. In this paper, we consider an ISAC transceiver with an…

信号处理 · 电气工程与系统科学 2024-02-27 José Miguel Mateos-Ramos , Baptiste Chatelier , Christian Häger , Musa Furkan Keskin , Luc Le Magoarou , Henk Wymeersch

Machine learning models deployed in open-world scenarios often encounter unfamiliar conditions and perform poorly in unanticipated situations. As AI systems advance and find application in safety-critical domains, effectively handling…

机器学习 · 计算机科学 2025-04-22 Tian Xie , Jifan Zhang , Haoyue Bai , Robert Nowak

This paper focuses on a new path division multiple access (PDMA) for both uplink (UL) and downlink (DL) massive multiple-input multiple-output network over a high mobility scenario, where the orthogonal time frequency space (OTFS) is…

信号处理 · 电气工程与系统科学 2020-03-19 Muye Li , Shun Zhang , Feifei Gao , Pingzhi Fan , Octavia A. Dobre

Line-of-sight (LoS) multiple-input multiple-output (MIMO) gives full spatial-multiplexing gain when the antenna array geometry and orientation are designed based on the inter-terminal distance. These known design methodologies, that hold…

信息论 · 计算机科学 2016-11-10 Lakshmi Natarajan , Yi Hong , Emanuele Viterbo

The safe deployment of machine learning and AI models in open-world settings hinges critically on the ability to detect out-of-distribution (OOD) data accurately, data samples that contrast vastly from what the model was trained with.…

机器学习 · 计算机科学 2025-05-23 Andrija Djurisic , Rosanne Liu , Mladen Nikolic

Integrated Sensing and Communications (ISAC) is emerging as a key paradigm for future Sixth-Generation (6G) networks, with communication-centric designs favored for their compatibility with existing standards. Communication signals contain…

信号处理 · 电气工程与系统科学 2026-05-14 Mathieu Reniers , Martin Willame , Jérôme Louveaux , Luc Vandendorpe

In conventional multi-user multiple-input multiple-output (MU-MIMO) systems with frequency division duplexing (FDD), channel acquisition and precoder optimization processes have been designed separately although they are highly coupled.…

信息论 · 计算机科学 2022-09-22 Jeonghyeon Jang , Hoon Lee , Il-Min Kim , Inkyu Lee

Traditional supervised 3D medical image segmentation models need voxel-level annotations, which require huge human effort, time, and cost. Semi-supervised learning (SSL) addresses this limitation of supervised learning by facilitating…

图像与视频处理 · 电气工程与系统科学 2024-07-09 Suruchi Kumari , Aryan Das , Swalpa Kumar Roy , Indu Joshi , Pravendra Singh

In this paper, we consider a downlink orthogonal frequency division multiplexing (OFDM) system from a base station to a high-speed train (HST) equipped with fully/partly calibrated massive uniform linear antenna-array (ULA) in wireless…

信号处理 · 电气工程与系统科学 2018-09-05 Yinghao Ge , Weile Zhang , Feifei Gao , Hlaing Minn

Inspired by the remarkable learning and prediction performance of deep neural networks (DNNs), we apply one special type of DNN framework, known as model-driven deep unfolding neural network, to reconfigurable intelligent surface…

信号处理 · 电气工程与系统科学 2021-12-06 Jiguang He , Henk Wymeersch , Marco Di Renzo , Markku Juntti