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Invariance to microphone array configuration is a rare attribute in neural beamformers. Filter-and-sum (FS) methods in this class define the target signal with respect to a reference channel. However, this not only complicates formulation…

音频与语音处理 · 电气工程与系统科学 2023-02-28 Anton Kovalyov , Kashyap Patel , Issa Panahi

This paper proposes a method for estimating a convolutional beamformer that can perform denoising and dereverberation simultaneously in an optimal way. The application of dereverberation based on a weighted prediction error (WPE) method…

音频与语音处理 · 电气工程与系统科学 2019-05-07 Tomohiro Nakatani , Keisuke Kinoshita

Recent speech foundation models excel at multilingual automatic speech recognition (ASR) for high-resource languages, but adapting them to low-resource languages remains challenging due to data scarcity and efficiency constraints.…

音频与语音处理 · 电气工程与系统科学 2026-02-03 Yang Xiao , Eun-Jung Holden , Ting Dang

Continuous speech separation (CSS) aims to separate overlapping voices from a continuous influx of conversational audio containing an unknown number of utterances spoken by an unknown number of speakers. A common application scenario is…

音频与语音处理 · 电气工程与系统科学 2021-10-14 Zhuohuang Zhang , Takuya Yoshioka , Naoyuki Kanda , Zhuo Chen , Xiaofei Wang , Dongmei Wang , Sefik Emre Eskimez

Underwater instance segmentation is a fundamental and critical step in various underwater vision tasks. However, the decline in image quality caused by complex underwater environments presents significant challenges to existing segmentation…

计算机视觉与模式识别 · 计算机科学 2026-03-03 Lianjun Liu

Benefiting from its capability to generalize existing reconfigurable intelligent surface (RIS) architectures and provide additional design flexibility via interactions between RIS elements, beyond-diagonal RIS (BD-RIS) has attracted…

信号处理 · 电气工程与系统科学 2025-01-20 Xiaohua Zhou , Tianyu Fang , Yijie Mao

Millimeter wave (mmWave) communication with large array gains is a key ingredient of next generation (5G) wireless networks. Effective communication in mmWaves usually depends on the knowledge of the channel. We refer to the problem of…

信息论 · 计算机科学 2017-11-30 Xiaoshen Song , Saeid Haghighatshoar , Giuseppe Caire

Deep Ultraviolet (DUV) Photolithography is currently used to fabricate mass-scale integrated circuits (ICs). Its high throughput and resolution could benefit large-scale RF MEMS production for the telecommunication market. We present a…

系统与控制 · 电气工程与系统科学 2024-07-23 Marco Liffredo , Federico Peretti , Nan Xu , Silvan Stettler , Luis Guillermo Villanueva

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

Millimeter-wave (MMW) multiple-input multiple-output synthetic aperture radar (MIMO-SAR) system is a technology that can achieve high resolution, high frame rate, and all-weather imaging and has received extensive attention in the…

信号处理 · 电气工程与系统科学 2024-11-25 Xu Chen , Guangsheng Yu , Zhian Yuan , Hao Wu , Yilin Jiang , Ying Wang , Bin Deng , Limin Guo

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

Purpose: This work aims to develop an image reconstruction algorithm for wide-angle digital breast tomosynthesis (DBT) that has improved depth resolution and in-plane contrast while reducing non-uniformity artifacts. Approach: The image…

Future multi-input multi-output (MIMO) wireless communications systems will use beamforming as a first-step towards realizing the capacity requirements necessitated by the exponential increase in data demands. The focus of this work is on…

信息论 · 计算机科学 2017-07-27 Dennis Ogbe , David J. Love , Vasanthan Raghavan

A novel multiuser communication system with movable antennas (MAs) is proposed, where the antenna position optimization is exploited to enhance the downlink sum-rate. The joint optimization of the transmit beamforming vector and transmit MA…

信号处理 · 电气工程与系统科学 2023-09-26 Zhenqiao Cheng , Nanxi Li , Jianchi Zhu , Chongjun Ouyang

Diffusion magnetic resonance imaging datasets suffer from low Signal-to-Noise Ratio, especially at high b-values. Acquiring data at high b-values contains relevant information and is now of great interest for microstructural and…

计算机视觉与模式识别 · 计算机科学 2016-06-27 Samuel St-Jean , Pierrick Coupé , Maxime Descoteaux

Distortion resulting from acoustic echo suppression (AES) is a common issue in full-duplex communication. To address the distortion problem, a multi-frame minimum variance distortionless response (MFMVDR) filtering technique is proposed.…

音频与语音处理 · 电气工程与系统科学 2022-05-10 Yuefeng Tsai , Yicheng Hsu , Mingsian Bai

For computational acoustics, schemes need to have low-dispersion and low-dissipation properties in order to capture the amplitude and phase of the wave correctly. To improve the spectral properties of the scheme, the authors have previously…

计算物理 · 物理学 2021-11-15 Y. H. Li , Y. X. Ren , Y. T. Su

Diffusion models provide a powerful way to incorporate complex prior information for solving inverse problems. However, existing methods struggle to correctly incorporate guidance from conflicting signals in the prior and measurement, and…

机器学习 · 计算机科学 2025-10-07 Shaorong Zhang , Rob Brekelmans , Yunshu Wu , Greg Ver Steeg

The least-absolute shrinkage and selection operator (LASSO) is a regularization technique for estimating sparse signals of interest emerging in various applications and can be efficiently solved via the alternating direction method of…

信息论 · 计算机科学 2022-08-25 Huiyue Yi , Yan Xu , Wuxiong Zhang , Hui Xu

Multi-cell coordinated beamforming (MCBF), where multiple base stations (BSs) collaborate with each other in the beamforming design for mitigating the inter-cell interference, has been a subject drawing great attention recently. Most MCBF…

信息论 · 计算机科学 2015-10-28 Chao Shen , Tsung-Hui Chang , Kun-Yu Wang , Zhengding Qiu , Chong-Yung Chi