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Affine frequency division multiplexing (AFDM) has recently emerged as a promising waveform for doubly-selective channles [1],[2], owing to its ability to fully exploit time-frequency diversity through appropriate tuning of the chirp-rate…

信号处理 · 电气工程与系统科学 2026-05-19 Haojian Zhang , Jiayan Yang , Tingting Zhang , Xu Zhu , Qinyu Zhang

This paper introduces a deep learning (DL)-based framework for task-based ultrasound (US) beamforming, aiming to enhance clinical outcomes by integrating specific clinical tasks directly into the beamforming process. Task-based beamforming…

图像与视频处理 · 电气工程与系统科学 2025-02-04 Ariel Amar , Ahuva Grubstein , Eli Atar , Keren Peri-Hanania , Nimrod Glazer , Ronnie Rosen , Shlomi Savariego , Yonina C. Eldar

Image Phase Alignment Super-sampling (ImPASS) is a computational method for combining displaced low-resolution images into a single high-resolution image. The general steps include measuring the relative displacements, up-sampling, aligning…

光学 · 物理学 2026-01-09 James N. Caron

Integrated sensing and communication (ISAC) is a key enabling technique for future wireless networks owing to its efficient hardware and spectrum utilization. In this paper, we focus on dual-functional waveform design for a multi-input…

信号处理 · 电气工程与系统科学 2024-06-26 Peishi Li , Ming Li , Rang Liu , Qian Liu , A. Lee Swindlehurst

Dynamic metasurface antennas (DMAs) are an alternative application of metasurfaces as active reconfigurable antennas with advanced analog signal processing and beamforming capabilities, which have been proposed to replace conventional…

信息论 · 计算机科学 2024-09-17 Nemanja Stefan Perović

Millimeter Wave (mmWave) communications rely on highly directional beams to combat severe propagation loss. In this paper, an adaptive beam search algorithm based on spatial scanning, called Iterative Deactivation and Beam Shifting (IDBS),…

信息论 · 计算机科学 2020-05-05 Chunshan Liu , Min Li , Lou Zhao , Philip Whiting , Stephen V. Hanly , Iain B. Collings

For millimeter wave (mmWave) or Terahertz (THz) communications, by leveraging the high spatial resolution offered by large antenna arrays and the multi-path sparsity of mmWave/THz channels, a novel inter-symbol interference (ISI) mitigation…

信号处理 · 电气工程与系统科学 2024-10-08 Jieni Zhang , Yong Zeng , Xiangbin Yu , Shi Jin , Jinhong Yuan , Ying-Chang Liang , Rui Zhang

Data augmentation is vital to the generalization ability and robustness of deep neural networks (DNNs) models. Existing augmentation methods for speaker verification manipulate the raw signal, which are time-consuming and the augmented…

音频与语音处理 · 电气工程与系统科学 2023-10-19 Yuanyuan Wang , Yang Zhang , Zhiyong Wu , Zhihan Yang , Tao Wei , Kun Zou , Helen Meng

Existing learning-based multi-view stereo (MVS) methods rely on the depth range to build the 3D cost volume and may fail when the range is too large or unreliable. To address this problem, we propose a disparity-based MVS method based on…

计算机视觉与模式识别 · 计算机科学 2022-12-06 Qingsong Yan , Qiang Wang , Kaiyong Zhao , Bo Li , Xiaowen Chu , Fei Deng

Integrated sensing and communication (ISAC) represents a pivotal advancement for future wireless networks. This paper introduces a novel ISAC beamforming method for enhancing sensing performance while preserving communication quality by…

信息论 · 计算机科学 2025-03-07 Meihui Liu , Shu Sun , Ruifeng Gao , Meixia Tao

Delay alignment modulation (DAM) is an innovative broadband modulation technique well suited for millimeter wave (mmWave) and terahertz (THz) massive multiple-input multiple-output (MIMO) communication systems. Leveraging the high spatial…

信号处理 · 电气工程与系统科学 2024-10-23 Xingwei Wang , Haiquan Lu , Jieni Zhang , Yong Zeng

Recently, flow-based methods have achieved promising success in video frame interpolation. However, electron microscopic (EM) images suffer from unstable image quality, low PSNR, and disorderly deformation. Existing flow-based interpolation…

计算机视觉与模式识别 · 计算机科学 2021-01-19 Zejin Wang , Guodong Sun , Lina Zhang , Guoqing Li , Hua Han

The growing use of information hiding in network streaming media for covert communication poses a significant security threat, necessitating the development of robust detection technologies. However, existing steganalysis methods for…

密码学与安全 · 计算机科学 2026-05-22 Pengcheng Zhou , Pianran Guo , Shuhua Chen , Mengqin Zhao , Zhongliang Yang , Linna Zhou

Synthetic aperture sonar (SAS) requires precise time-of-flight measurements of the transmitted/received waveform to produce well-focused imagery. It is not uncommon for errors in these measurements to be present resulting in image…

计算机视觉与模式识别 · 计算机科学 2021-06-02 Isaac D. Gerg , Vishal Monga

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

We introduce a new algorithm to solve a regularized spatial-spectral image estimation problem. Our approach is based on the linearized alternating directions method of multipliers (LADMM), which is a variation of the popular ADMM algorithm.…

信号处理 · 电气工程与系统科学 2025-02-25 Yunsong Liu , Debdut Mandal , Congyu Liao , Kawin Setsompop , Justin P. Haldar

The effect of noise on the Inverse Synthetic Aperture Radar (ISAR) with sparse apertures is a challenging issue for image reconstruction with high resolution at low Signal-to-Noise Ratios (SNRs). It is well-known that the image resolution…

信号处理 · 电气工程与系统科学 2024-06-18 Mohammad Roueinfar , Mohammad Hossein Kahaei

Balancing reconstruction quality versus model efficiency remains a critical challenge in lightweight single image super-resolution (SISR). Despite the prevalence of attention mechanisms in recent state-of-the-art SISR approaches that…

计算机视觉与模式识别 · 计算机科学 2025-05-28 M. Akin Yilmaz , Ahmet Bilican , A. Murat Tekalp

With the rapid development of AIGC technologies, generative image steganography has attracted increasing attention due to its high imperceptibility and flexibility. However, existing generative steganography methods often maintain…

密码学与安全 · 计算机科学 2026-02-03 Yuhao Xue , Jiuan Zhou , Yu Cheng , Zhaoxia Yin

Distributed acoustic sensing (DAS) is a relatively new technology for recording stress wave propagation, with promising applications in both engineering and geophysics. DAS's ability to simultaneously collect high spatial resolution data…

地球物理 · 物理学 2022-10-27 Michael B. S. Yust , Brady R. Cox , Joseph P. Vantassel , Peter G. Hubbard