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Deep learning (DL) techniques have been intensively studied for the optimization of multi-user multiple-input single-output (MU-MISO) downlink systems owing to the capability of handling nonconvex formulations. However, the fixed…

Signal Processing · Electrical Eng. & Systems 2022-07-13 Junbeom Kim , Hoon Lee , Seung-Eun Hong , Seok-Hwan Park

In the recent past, there have been many efforts to accelerate adaptive beamforming for ultrasound (US) imaging using neural networks (NNs). However, most of these efforts are based on static models, i.e., they are trained to learn a single…

Signal Processing · Electrical Eng. & Systems 2022-08-02 Mayank Katare , Mahesh Raveendranatha Panicker , A N Madhavanunni , Gayathri Malamal

Far-field speech processing is an important and challenging problem. In this paper, we propose \textit{deep ad-hoc beamforming}, a deep-learning-based multichannel speech enhancement framework based on ad-hoc microphone arrays, to address…

Sound · Computer Science 2021-02-10 Xiao-Lei Zhang

Advancements in 6G wireless technology have elevated the importance of beamforming, especially for attaining ultra-high data rates via millimeter-wave (mmWave) frequency deployment. Although promising, mmWave bands require substantial beam…

Networking and Internet Architecture · Computer Science 2024-07-31 Avi Deb Raha , Kitae Kim , Apurba Adhikary , Mrityunjoy Gain , Zhu Han , Choong Seon Hong

We propose a new robust distributed linearly constrained beamformer which utilizes a set of linear equality constraints to reduce the cross power spectral density matrix to a block-diagonal form. The proposed beamformer has a convenient…

Signal Processing · Electrical Eng. & Systems 2019-05-28 Andreas I. Koutrouvelis , Thomas W. Sherson , Richard Heusdens , Richard C. Hendriks

In this letter, we study the energy efficiency maximization problem for a fluid antenna system (FAS) in near field communications. Specifically, we consider a point-to-point near-field system where the base station (BS) transmitter has…

Signal Processing · Electrical Eng. & Systems 2024-11-26 Yixuan Chen , Mingzhe Chen , Hao Xu , Zhaohui Yang , Kai-Kit Wong , Zhaoyang Zhang

Transformers have achieved promising results on a variety of tasks. However, the quadratic complexity in self-attention computation has limited the applications, especially in low-resource settings and mobile or edge devices. Existing works…

Sound · Computer Science 2024-01-09 Wentao Zhu

Automatic speech recognition (ASR) in multichannel, multi-speaker scenarios remains challenging due to ambient noise, reverberation and overlapping speakers. In this paper, we propose a beamforming approach that processes specific angular…

Sound · Computer Science 2025-09-15 Can Cui , Paul Magron , Mostafa Sadeghi , Emmanuel Vincent

We develop an efficient data-driven and model-free unsupervised learning algorithm for achieving fully passive intelligent reflective surface (IRS)-assisted optimal short/long-term beamforming in wireless communication networks. The…

Signal Processing · Electrical Eng. & Systems 2024-11-01 Spyridon Pougkakiotis , Hassaan Hashmi , Dionysis Kalogerias

Dynamic Metasurface Antenna (DMA) is a cutting-edge antenna technology offering scalable and sustainable solutions for large antenna arrays. The effectiveness of DMAs stems from their inherent configurable analog signal processing…

Information Theory · Computer Science 2023-11-15 Xiangyu Zhang , Haiyang Zhang , Luxi Yang , Yonina C. Eldar

Signal-dependent beamformers are advantageous over signal-independent beamformers when the acoustic scenario - be it real-world or simulated - is straightforward in terms of the number of sound sources, the ambient sound field and their…

Audio and Speech Processing · Electrical Eng. & Systems 2023-12-01 Sina Hafezi , Alastair H. Moore , Pierre H. Guiraud , Patrick A. Naylor , Jacob Donley , Vladimir Tourbabin , Thomas Lunner

Spoken language understanding, which extracts intents and/or semantic concepts in utterances, is conventionally formulated as a post-processing of automatic speech recognition. It is usually trained with oracle transcripts, but needs to…

Sound · Computer Science 2020-07-30 Viet-Trung Dang , Tianyu Zhao , Sei Ueno , Hirofumi Inaguma , Tatsuya Kawahara

Intelligent reflecting surface (IRS), which consists of a large number of tunable reflective elements, is capable of enhancing the wireless propagation environment in a cellular network by intelligently reflecting the electromagnetic waves…

Signal Processing · Electrical Eng. & Systems 2021-06-10 Tao Jiang , Hei Victor Cheng , Wei Yu

Image compression constitutes a significant challenge amidst the era of information explosion. Recent studies employing deep learning methods have demonstrated the superior performance of learning-based image compression methods over…

Computer Vision and Pattern Recognition · Computer Science 2024-05-07 Yuefeng Zhang , Kai Lin

In this paper we propose a robust loudspeaker beamforming algorithm which is used to enhance the performance of voice driven applications in scenarios where the loudspeakers introduce the majority of the noise, e.g. when music is playing…

Audio and Speech Processing · Electrical Eng. & Systems 2025-05-21 Dimme de Groot , Baturalp Karslioglu , Odette Scharenborg , Jorge Martinez

Hybrid beamforming for extremely large-scale multiple-input multiple-output (XL-MIMO) systems is challenging in the near field because the channel depends jointly on angle and distance, and the multiuser interference (MUI) is strong.…

Signal Processing · Electrical Eng. & Systems 2026-03-13 Xinyang Li , Songjie Yang , Boyu Ning , Zongmiao He , Xiang Ling , Chau Yuen

This paper investigates a reconfigurable intelligent surface (RIS)-assisted integrated sensing and communication (ISAC) system and proposes a joint communication and sensing beamforming design based on non-orthogonal multiple access (NOMA)…

Information Theory · Computer Science 2025-08-20 Chunjie Wang , Xuhui Zhang , Jinke Ren , Wenchao Liu , Shuqiang Wang , Yanyan Shen , Kejiang Ye , Chengzhong Xu , Dusit Niyato

We present a deformable prototypical part network (Deformable ProtoPNet), an interpretable image classifier that integrates the power of deep learning and the interpretability of case-based reasoning. This model classifies input images by…

Computer Vision and Pattern Recognition · Computer Science 2024-05-06 Jon Donnelly , Alina Jade Barnett , Chaofan Chen

Hybrid multiple-input multiple-output (MIMO) is an attractive technology for realizing extreme massive MIMO systems envisioned for future wireless communications in a scalable and power-efficient manner. However, the fact that hybrid MIMO…

Information Theory · Computer Science 2024-10-28 Nir Shlezinger , Mengyuan Ma , Ortal Lavi , Nhan Thanh Nguyen , Yonina C. Eldar , Markku Juntti

Autonomous vehicles demand high accuracy and robustness of perception algorithms. To develop efficient and scalable perception algorithms, the maximum information should be extracted from the available sensor data. In this work, we present…

Computer Vision and Pattern Recognition · Computer Science 2023-05-12 Sebastian Huch , Florian Sauerbeck , Johannes Betz