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Randomized orthogonal projection methods (ROPMs) can be used to speed up the computation of Krylov subspace methods in various contexts. Through a theoretical and numerical investigation, we establish that these methods produce…

数值分析 · 数学 2023-03-14 Edouard Timsit , Laura Grigori , Oleg Balabanov

Krylov subspace methods are an essential building block in numerical simulation software. The efficient utilization of modern hardware is a challenging problem in the development of these methods. In this work, we develop Krylov subspace…

数值分析 · 数学 2021-04-07 Nils-Arne Dreier

Hybrid digital/analog architecture and low-resolution analog-to-digital/digital-to-analog converters (ADCs /DACs) are two low-cost implementations for large-scale millimeter wave (mmWave) systems. In this paper, we investigate the problem…

信号处理 · 电气工程与系统科学 2023-03-07 Ziyang Cheng , Linlong Wu , Bowen Wang , Julan Xie , Huiyong Li

Optimization-based coupling (OBC) is an attractive alternative to traditional Lagrange multiplier approaches in multiple modeling and simulation contexts. However, application of OBC to time-dependent problems has been hindered by the…

计算工程、金融与科学 · 计算机科学 2025-04-22 Elizabeth Hawkins , Paul Kuberry , Pavel Bochev

In this paper, we study a multi-input multi-output (MIMO) beamforming design in an integrated sensing and communication (ISAC) system, in which an ISAC base station (BS) is used to communicate with multiple downlink users and simultaneously…

信息论 · 计算机科学 2024-07-08 Chao Hu , Yuan Fang , Ling Qiu

Assessing IC manufacturing process fluctuations and their impacts on IC interconnect performance has become unavoidable for modern DSM designs. However, the construction of parametric interconnect models is often hampered by the rapid…

硬件体系结构 · 计算机科学 2011-11-09 Peng Li , Frank Liu , Xin Li , Lawrence T. Pileggi , Sani R. Nassif

This article proposes novel sparsity-aware space-time adaptive processing (SA-STAP) algorithms with $l_1$-norm regularization for airborne phased-array radar applications. The proposed SA-STAP algorithms suppose that a number of samples of…

信息论 · 计算机科学 2013-04-16 Z. Yang , R. C. de Lamare

Adaptive sampling algorithms are modern and efficient methods that dynamically adjust the sample size throughout the optimization process. However, they may encounter difficulties in risk-averse settings, particularly due to the challenge…

最优化与控制 · 数学 2025-02-17 Sandra Pieraccini , Tommaso Vanzan

Intelligent Transportation Systems (ITSs) require ultra-low end-to-end delays and multi-gigabit-per-second data transmission. Millimetre Waves (mmWaves) communications can fulfil these requirements. However, the increased mobility of…

网络与互联网体系结构 · 计算机科学 2022-09-05 Ioannis Mavromatis , Andrea Tassi , Robert J. Piechocki , Andrew Nix

This paper studies transmit beamforming design in an integrated sensing and communication (ISAC) system, where a base station sends symbols to perform downlink multi-user communication and sense an extended target simultaneously. We first…

信息论 · 计算机科学 2023-12-19 Yiqiu Wang , Meixia Tao , Shu Sun

Learning representation from relative similarity comparisons, often called ordinal embedding, gains rising attention in recent years. Most of the existing methods are based on semi-definite programming (\textit{SDP}), which is generally…

机器学习 · 计算机科学 2019-12-03 Ke Ma , Jinshan Zeng , Qianqian Xu , Xiaochun Cao , Wei Liu , Yuan Yao

We investigate fast data aggregation via over-the-air computation (AirComp) over wireless networks. In this scenario, an access point (AP) with multiple antennas aims to recover the arithmetic mean of sensory data from multiple wireless…

信息论 · 计算机科学 2024-04-23 Hongbin Zhu , Hua Qian

In this paper, we propose a tightly-coupled SLAM system fused with RGB, Depth, IMU and structured plane information. Traditional sparse points based SLAM systems always maintain a mass of map points to model the environment. Huge number of…

机器人学 · 计算机科学 2022-07-05 Danpeng Chen , Shuai Wang , Weijian Xie , Shangjin Zhai , Nan Wang , Hujun Bao , Guofeng Zhang

This paper proposes an auxiliary vector filtering (AVF) algorithm based on a constrained constant modulus (CCM) design for robust adaptive beamforming. This scheme provides an efficient way to deal with filters with a large number of…

信息论 · 计算机科学 2013-03-14 Lei Wang , Rodrigo de Lamare

At present, there is a trend to deploy ubiquitous artificial intelligence (AI) applications at the edge of the network. As a promising framework that enables secure edge intelligence, federated learning (FL) has received widespread…

信息论 · 计算机科学 2024-03-29 Chunmei Xu , Shengheng Liu , Yongming Huang , Bjorn Ottersten , Dusit Niyato

This paper considers the beamforming optimization for sensing a point-like scatterer using a bistatic multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) radar, which could be part of a joint…

信号处理 · 电气工程与系统科学 2025-08-26 Tobias Laas , Ronald Boehnke , Wen Xu

Conventional antenna arrays rely primarily on digital beamforming for spatial control. While adding more elements can narrow beamwidth and suppress interference, such scaling incurs prohibitive hardware and power costs. Rotatable antennas…

信号处理 · 电气工程与系统科学 2025-09-29 Xingxiang Peng , Qingqing Wu , Ziyuan Zheng , Wen Chen , Yanze Zhu , Ying Gao

The Minimum Variance Distortionless Response (MVDR) beamforming technique is widely applied in array systems to mitigate interference. However, applying MVDR to large arrays is computationally challenging; its computational complexity…

信号处理 · 电气工程与系统科学 2025-10-17 Sanjaya Herath , Armin Gerami , Kevin Wagner , Ramani Duraiswami , Christopher A. Metzler

Conventional compressed sensing (CS) algorithms typically apply a uniform sampling rate to different image blocks. A more strategic approach could be to allocate the number of measurements adaptively, based on each image block's complexity.…

计算机视觉与模式识别 · 计算机科学 2024-02-28 Yujun Huang , Bin Chen , Naiqi Li , Baoyi An , Shu-Tao Xia , Yaowei Wang

Multicast beamforming is a promising technique for multicast communication. Providing an efficient and powerful beamforming design algorithm is a crucial issue because multicast beamforming problems such as a max-min-fair problem are…

信息论 · 计算机科学 2020-04-21 Satoshi Takabe , Tadashi Wadayama