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In this paper, a novel and robust algorithm is proposed for adaptive beamforming based on the idea of reconstructing the autocorrelation sequence (ACS) of a random process from a set of measured data. This is obtained from the first column…

信息论 · 计算机科学 2021-06-25 Saeed Mohammadzadeh , Vitor H. Nascimento , Rodrigo C. de Lamare , Osman Kukrer

Photonic device development (PDD) has achieved remarkable success in designing and implementing new devices for controlling light across various wavelengths, scales, and applications, including telecommunications, imaging, sensing, and…

Active learning is considered a viable solution to alleviate the contradiction between the high dependency of deep learning-based segmentation methods on annotated data and the expensive pixel-level annotation cost of medical images.…

计算机视觉与模式识别 · 计算机科学 2024-10-23 Jun Shi , Shulan Ruan , Ziqi Zhu , Minfan Zhao , Hong An , Xudong Xue , Bing Yan

The proposed method in this paper proposes an end-to-end unsupervised semantic segmentation architecture DMSA based on four loss functions. The framework uses Atrous Spatial Pyramid Pooling (ASPP) module to enhance feature extraction. At…

计算机视觉与模式识别 · 计算机科学 2023-03-03 Kun Yang , Jun Lu

Antenna array calibration is necessary to maintain the high fidelity of beam patterns across a wide range of advanced antenna systems and to ensure channel reciprocity in time division duplexing schemes. Despite the continuous development…

信号处理 · 电气工程与系统科学 2023-05-26 Sergey S. Tambovskiy , Gábor Fodor , Hugo M. Tullberg

This paper describes a channel-selection approach for simplifying deep neural networks. Specifically, we propose a new type of generic network layer, called pruning layer, to seamlessly augment a given pre-trained model for compression.…

计算机视觉与模式识别 · 计算机科学 2019-04-09 Chih-Yao Chiu , Hwann-Tzong Chen , Tyng-Luh Liu

In high-dynamic range (HDR) analog-to-digital converters (ADCs), having many quantization bits minimizes quantization errors but results in high bit rates, limiting their application scope. A strategy combining modulo-folding with a low-DR…

信号处理 · 电气工程与系统科学 2023-11-23 Satish Mulleti , Resham Yashwanth Kumar , Laxmeesha Somappa

How to develop slim and accurate deep neural networks has become crucial for real- world applications, especially for those employed in embedded systems. Though previous work along this research line has shown some promising results, most…

神经与进化计算 · 计算机科学 2019-10-02 Xin Dong , Shangyu Chen , Sinno Jialin Pan

Two-level domain decomposition (DD) methods are very powerful techniques for the efficient numerical solution of partial differential equations (PDEs). A two-level domain decomposition method requires two main components: a one-level…

数值分析 · 数学 2021-04-22 Gabriele Ciaramella , Tommaso Vanzan

This paper presents a novel approach for distributed model predictive control (MPC) for piecewise affine (PWA) systems. Existing approaches rely on solving mixed-integer optimization problems, requiring significant computation power or…

最优化与控制 · 数学 2025-01-06 Samuel Mallick , Azita Dabiri , Bart De Schutter

We consider learning deep neural networks (DNNs) that consist of low-precision weights and activations for efficient inference of fixed-point operations. In training low-precision networks, gradient descent in the backward pass is performed…

计算机视觉与模式识别 · 计算机科学 2020-05-26 Yoojin Choi , Mostafa El-Khamy , Jungwon Lee

Compared to traditional electrodynamic loudspeakers, the parametric array loudspeaker (PAL) offers exceptional directivity for audio applications but suffers from significant nonlinear distortions due to its inherent intricate demodulation…

音频与语音处理 · 电气工程与系统科学 2025-07-11 Mengtong Li , Tao Zhuang , Kai Chen , Jia-Xin Zhong , Jing Lu

In cellular systems, the user equipment (UE) can request a change in the frequency band when its rate drops below a threshold on the current band. The UE is then instructed by the base station (BS) to measure the quality of candidate bands,…

网络与互联网体系结构 · 计算机科学 2020-09-15 Faris B. Mismar , Ahmad AlAmmouri , Ahmed Alkhateeb , Jeffrey G. Andrews , Brian L. Evans

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

To keep massive MIMO systems cost-efficient, power amplifiers with rather small output dynamic ranges are employed. They may distort the transmit signal and degrade the performance. This paper proposes a distortion aware precoding scheme…

信号处理 · 电气工程与系统科学 2019-05-15 Ali Bereyhi , Saba Asaad , Ralf R. Müller , Symeon Chatzinotas

Scheduling flexible sources to promote the integration of renewable generation is one fundamental problem for operating active distribution networks (ADNs). However, existing works are usually based on power flow models, which require…

最优化与控制 · 数学 2022-08-09 Ge Chen , Hongcai Zhang , Yonghua Song

The frequency diverse array (FDA) based directional modulation (DM) technology plays an important role in the implementation of the physical-layer security (PLS) transmission of 5G and beyond communication system. In order to meet the…

信号处理 · 电气工程与系统科学 2019-10-02 Qian Cheng , Shilian Wang , Vincent Fusco , Fanggang Wang , Jiang Zhu , Chao Gu

Polarization reconfigurable (PR) antennas enhance spectrum and energy efficiency between next-generation node B(gNB) and user equipment (UE). This is achieved by tuning the polarization vectors for each antenna element based on channel…

信号处理 · 电气工程与系统科学 2024-10-01 Seungcheol Oh , Han Han , Joongheon Kim , Sean Kwon

The analysis of wireless communication channels at the mmWave, sub-THz and THz bands gives rise to difficulties in the construction of antenna arrays due to the small maximum inter-element spacing constraints at these frequencies. Arrays…

信号处理 · 电气工程与系统科学 2024-03-27 Marc Miranda , Sebastian Semper , Michael Döbereiner , Reiner Thomä

To address the enormous size of Large Language Models (LLMs), model compression methods, such as quantization and pruning, are often deployed, especially on edge devices. In this work, we focus on layer-wise post-training quantization and…

机器学习 · 计算机科学 2025-12-02 Jing Liu , Toshiaki Koike-Akino , Ye Wang , Hassan Mansour , Matthew Brand