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Conventional radar array design mandates interelement spacing not exceeding half a wavelength ($\lambda/2$) to avoid spatial ambiguity, fundamentally limiting array aperture and angular resolution. This paper addresses the fundamental…

Signal Processing · Electrical Eng. & Systems 2026-02-10 Hua Chen , Zhenhao Yu , Tuo Wu , Wei Liu , Maged Elkashlan , Hyundong Shin , Matthew C. Valenti , Robert Schober

We investigate inter-satellite cooperative transmission in a multiple low-Earth orbit (LEO) satellite communication system to enhance spectral efficiency. Specifically, we design multiple-input multipleoutput (MIMO) precoding at LEO…

Signal Processing · Electrical Eng. & Systems 2025-08-18 Sangwon Jo , Seok-Hwan Park

This paper studies flexible non-uniform array design for monostatic integrated sensing and communication (ISAC) systems. An antenna pool is considered at the base station, where each candidate antenna can be dynamically assigned to…

Information Theory · Computer Science 2026-05-01 Zhe Wang , Mahmoud Zaher , Vitaly Petrov , Emil Björnson

This paper addresses precoder design for secure multiple-input multiple-output (MIMO) integrated sensing and communications (ISAC) systems. We introduce a MIMO channel with a multiple-antenna eavesdropper and a multiple-antenna sensing…

Signal Processing · Electrical Eng. & Systems 2026-03-09 Seongkyu Jung , Namyoon Lee , Jeonghun Park

Reconfigurable intelligent surfaces (RISs) have received extensive concern to improve the performance of wireless communication systems. In this paper, a subarray-based scheme is investigated in terms of its effects on ergodic spectral…

Information Theory · Computer Science 2023-09-25 Xinyi Yang , Weicong Chen , Xiao Li , Shi Jin

In this paper, sensing-assisted secure communication in a multi-user multi-eavesdropper integrated sensing and communication (ISAC) system is investigated. Confidential communication signals and dedicated sensing signals are jointly…

Signal Processing · Electrical Eng. & Systems 2025-10-07 Fanghao Xia , Zesong Fei , Xinyi Wang , Nanchi Su , Zhaolin Wang , Yuanwei Liu , Jie Xu

The Linear Representation Hypothesis asserts that the embeddings learned by neural networks can be understood as linear combinations of features corresponding to high-level concepts. Based on this ansatz, sparse autoencoders (SAEs) have…

Machine Learning · Computer Science 2026-01-29 Chiraag Kaushik , Davis Barch , Andrea Fanelli

A novel Integrated Sensing-Communication (ISAC) system is proposed that can accommodate high mobility scenarios while making efficient use of bandwidth for both communication and sensing. The system comprises a monostatic multiple-input…

Signal Processing · Electrical Eng. & Systems 2026-03-31 Kailong Wang , Athina Petropulu

Feature subset selection (FSS) for classification is inherently a bi-objective optimization problem, where the task is to obtain a feature subset which yields the maximum possible area under the receiver operator characteristic curve (AUC)…

Distributed, Parallel, and Cluster Computing · Computer Science 2022-05-20 Yelleti Vivek , Vadlamani Ravi , P. Radha Krishna

Multiple-input multiple-output (MIMO) and multiple-input single-output (MISO) schemes have yielded promising results in free space optical (FSO) communications by providing diversity against fading of the received signal intensity. In this…

Signal Processing · Electrical Eng. & Systems 2020-09-02 Muhammad Salman Bashir , Mohamed-Slim Alouini

Low earth orbit (LEO) satellite-assisted integrated sensing and communications (ISAC) systems have been extensively studied to achieve ubiquitous connectivity. However, the severe signal attenuation and limited transmit power at LEO…

Signal Processing · Electrical Eng. & Systems 2025-11-07 Hanfu Zhang , Erwu Liu

As the uplink sensing has the advantage of easy implementation, it attracts great attention in integrated sensing and communication (ISAC) system. This paper presents an uplink ISAC system based on multi-input multi-output orthogonal…

Information Theory · Computer Science 2023-10-11 Jinghui Piao , Zhiqing Wei , Xin Yuan , Xiaoyu Yang , Huici Wu , Zhiyong Feng

In the second part of the series papers, we set out to study the algorithmic efficiency of sparse sensing. Stemmed from co-prime sensing, we propose a generalized framework, termed Diophantine sensing, which utilizes generic Diophantine…

Information Theory · Computer Science 2021-08-25 Hanshen Xiao , Beining Zhou , Guoqiang Xiao

This paper presents a seamless algorithm for the application of the multilevel Monte Carlo (MLMC) method to the ensemble transform particle filter (ETPF). The algorithm uses a combination of optimal coupling transformations between coarse…

Numerical Analysis · Mathematics 2017-06-15 Alastair Gregory , Colin Cotter

Federated Learning (FL) enables multiple resource-constrained edge devices with varying levels of heterogeneity to collaboratively train a global model. However, devices with limited capacity can create bottlenecks and slow down model…

Machine Learning · Computer Science 2025-04-08 Afsaneh Mahanipour , Hana Khamfroush

Conventional array designs based on circular fourth-order cumulant typically adopt a single expression form of the fourth-order difference co-array (FODCA), which limits the achievable degrees of freedom (DOFs) and neglects the impact of…

Signal Processing · Electrical Eng. & Systems 2025-08-28 Si Wang , Guoqiang Xiao

In this paper, we propose a full-duplex integrated sensing and communication (ISAC) system enabled by a movable antenna (MA). By leveraging the characteristic of MA that can increase the spatial diversity gain, the performance of the system…

Signal Processing · Electrical Eng. & Systems 2025-11-07 Zhendong Li , Jianle Ba , Zhou Su , Haixia Peng , Yuntao Wang , Wen Chen , Qingqing Wu

We first conceive a novel transmission protocol for a multi-relay multiple-input--multiple-output orthogonal frequency-division multiple-access (MIMO-OFDMA) cellular network based on joint transmit and receive beamforming. We then address…

Information Theory · Computer Science 2015-03-04 Kent Tsz Kan Cheung , Shaoshi Yang , Lajos Hanzo

Variable screening methods have been shown to be effective in dimension reduction under the ultra-high dimensional setting. Most existing screening methods are designed to rank the predictors according to their individual contributions to…

Methodology · Statistics 2022-02-08 Ye Tian , Yang Feng

We study the generalized degrees-of-freedom (GDoF) of cellular networks under finite precision channel state information at the transmitters (CSIT). We consider downlink settings modeled by the interfering broadcast channel (IBC) under no…

Information Theory · Computer Science 2021-07-13 Hamdi Joudeh , Giuseppe Caire