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In this paper, for solving a broad class of large-scale nonconvex and nonsmooth optimization problems, we propose a stochastic two step inertial Bregman proximal alternating linearized minimization (STiBPALM) algorithm with variance-reduced…

最优化与控制 · 数学 2023-07-12 Chenzheng Guo , Jing Zhao , Qiao-Li Dong

Reconfigurable distributed antenna and reflecting surface (RDARS) is a new architecture for the sixth-generation (6G) millimeter wave (mmWave) communications. In RDARS-aided mmWave systems, the active and passive beamforming design and…

信号处理 · 电气工程与系统科学 2025-04-03 Chengwang Ji , Qing Xue , Haiquan Lu , Jintao Wang , Qiaoyan Peng , Shaodan Ma , Wei Zhang

This study examines analog beamforming designs utilizing multi-panel arrays for millimeter-wave (mmWave) communication systems under stochastic path blockages where each panel is an integrated circuit that includes power amplifiers, a…

信号处理 · 电气工程与系统科学 2025-03-10 Kanta Terui , Kabuto Arai , Koji Ishibashi

This paper presents the design and implementation of a compact, cost-effective phased array antenna system. It is capable of real-time beam-steering for dynamic target-tracking applications. The system employs a 4$\times$4 rectangular…

系统与控制 · 电气工程与系统科学 2025-08-29 Adham Saad , Aya Sherif Nassef , Mahmoud Mohamed Elshahed , Mohamed Ismail Ahmed

Recently, an intriguing research trend for automatic target recognition (ATR) from synthetic aperture radar (SAR) imagery has arisen: using simulated data to train ATR models is a feasible solution to the issue of inadequate measured data.…

计算机视觉与模式识别 · 计算机科学 2024-11-08 Xinzheng Zhang , Hui Zhu , Hongqian Zhuang

In this work, we propose a novel low-complexity reduced-rank scheme and consider its application to linear interference suppression in direct-sequence ultra-wideband (DS-UWB) systems. Firstly, we investigate a generic reduced-rank scheme…

信息论 · 计算机科学 2013-05-16 Sheng Li , Rodrigo C. de Lamare

We investigate synthesis of a large effective aperture using a sparse array of subarrays. We employ a multi-objective optimization framework for placement of subarrays within a prescribed area dictated by form factor constraints, trading…

信号处理 · 电气工程与系统科学 2019-12-17 Anant Gupta , Upamanyu Madhow , Amin Arbabian , Ali Sadri

A new methodology for the synthesis of wide-angle scanning arrays is proposed. It is based on the formulation of the array design problem as a multi-objective one where, for each scan angle, both the radiated power density in the scan…

系统与控制 · 电气工程与系统科学 2024-08-14 Pietro Rosatti , Giacomo Oliveri , Andrea Massa

To overcome the high path-loss and the intense shadowing in millimeter-wave (mmWave) communications, effective beamforming schemes are required which incorporate narrow beams with high beamforming gains. The mmWave channel consists of a few…

信息论 · 计算机科学 2022-02-15 Nariman Torkzaban , Mohammad A. , Khojastepour , John S. Baras

Rotating Synthetic Aperture Radar (ROSAR) can generate a 360$^\circ$ image of its surrounding environment using the collected data from a single moving track. Due to its non-linear track, the Back-Projection Algorithm (BPA) is commonly used…

信号处理 · 电气工程与系统科学 2023-09-18 Wei Zhao , Cai Wen , Quan Yuan , Rong Zheng

Weakly Supervised Anomaly detection (WSAD) in brain MRI scans is an important challenge useful to obtain quick and accurate detection of brain anomalies when precise pixel-level anomaly annotations are unavailable and only weak labels…

计算机视觉与模式识别 · 计算机科学 2026-04-09 Bheeshm Sharma , Karthikeyan Jaganathan , Balamurugan Palaniappan

Protein structure prediction often hinges on multiple sequence alignments (MSAs), which underperform on low-homology and orphan proteins. We introduce PLAME, a lightweight MSA design framework that leverages evolutionary embeddings from…

Employing large antenna arrays is a key characteristic of millimeter wave (mmWave) and terahertz communication systems. However, due to the adoption of fully analog or hybrid analog/digital architectures, as well as non-ideal hardware or…

信号处理 · 电气工程与系统科学 2021-02-19 Yu Zhang , Muhammad Alrabeiah , Ahmed Alkhateeb

The computationally-efficient solution of multi-objective optimization problems (MOPs) arising in the design of modern electromagnetic (EM) microwave devices is addressed. Towards this end, a novel System-by-Design (SbD) method is developed…

信号处理 · 电气工程与系统科学 2023-04-19 P. Rosatti , M. Salucci , L. Poli , A. Massa

Sub/Near-threshold static random-access memory (SRAM) design is crucial for addressing the memory bottleneck in energy-constrained applications. However, the high integration density and reliability under process variations demand an…

硬件体系结构 · 计算机科学 2022-02-25 Shan Shen , Peng Cao , Ming Ling , Longxing Shi

Reconfigurable distributed antennas and reflecting surface (RDARS) has emerged as a promising architecture for communication and sensing performance enhancement. In particular, the new selection gain can be achieved by leveraging the…

信号处理 · 电气工程与系统科学 2026-03-13 Chengwang Ji , Haiquan Lu , Qiaoyan Peng , Jintao Wang , Shaodan Ma

Phased antenna arrays enable dynamic beam shaping, which is essential for Non-Geostationary (NGSO) satellite communications where efficient beam distribution is important. This study focuses on thinning phased antenna arrays with circular…

信号处理 · 电气工程与系统科学 2025-02-04 Arkadii Kazanskii , Juan Andres Vasquez-Peralvo , Symeon Chatzinotas

Finite-aperture constraints render array design nontrivial and can undermine the effectiveness of classical sparse geometries. This letter provides universal guidance for fluid antenna array (FAA) design under a fixed aperture. We derive a…

信息论 · 计算机科学 2026-05-08 Zhentian Zhang , Kai-Kit Wong , Hao Jiang , Farshad Rostami Ghadi , Hyundong Shin , Yangyang Zhang

Bidirectional Associative Memory (BAM) trained with Bidirectional Backpropagation (B-BP) often suffers from poor robustness and high sensitivity to noise and adversarial attacks. To address these issues, we propose a novel gradient-free…

机器学习 · 计算机科学 2025-11-18 Ci Lin , Tet Yeap , Iluju Kiringa , Biwei Zhang

A surrogate-based synthesis framework for antenna arrays is presented that incorporates mutual coupling while keeping optimization computationally efficient. The method combines a common characteristic-mode basis, a global modal coupling…

信号处理 · 电气工程与系统科学 2026-05-25 Leonardo Mörlein , Dirk Manteuffel