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In order to cope with the large path-loss exponent of mm-Wave channels, a high beamforming gain is needed. This can be achieved with small hardware complexity and high hardware power efficiency by Hybrid Digital-Analog (HDA) beamforming,…

信息论 · 计算机科学 2016-02-10 Saeid Haghighatshoar , Giuseppe Caire

The integration of sensing capability in the design of wireless communication systems is foreseen as a key enabler for efficient radio resource management in next-generation networks. This paper focuses on millimeter-wave communications,…

信号处理 · 电气工程与系统科学 2023-07-03 Mohamed Sana , Hiba Dakdouk , Benoit Denis

Dealing with broadcast scenarios has become a relevant topic in the scientific community. Because of interference, resource management presents a challenge, specially when spatial diversity is introduced. Many researches presented…

信号处理 · 电气工程与系统科学 2020-07-17 Pol Henarejos

With fluid antenna system (FAS) gradually establishing itself as a possible enabling technology for next generation wireless communications, channel estimation for FAS has become a pressing issue. Existing methodologies however face…

信号处理 · 电气工程与系统科学 2025-07-09 Zhen Chen , Jianqing Li , Xiu Yin Zhang , Kai-Kit Wong , Chan-Byoung Chae , Yangyang Zhang

Recurrent Neural Networks (RNNs) are used in state-of-the-art models in domains such as speech recognition, machine translation, and language modelling. Sparsity is a technique to reduce compute and memory requirements of deep learning…

机器学习 · 计算机科学 2017-11-09 Sharan Narang , Eric Undersander , Gregory Diamos

Sparse autoencoders (SAEs) are used to disentangle the dense, polysemantic internal representations of large language models (LLMs) into interpretable, monosemantic concepts. However, standard $\ell_1$-regularized SAEs suffer from feature…

机器学习 · 计算机科学 2026-05-08 Faris Chaudhry , Keisuke Yano , Anthea Monod

Understanding how biological constraints shape neural computation is a central goal of computational neuroscience. Spatially embedded recurrent neural networks provide a promising avenue to study how modelled constraints shape the combined…

神经与进化计算 · 计算机科学 2024-09-27 Cornelia Sheeran , Andrew S. Ham , Duncan E. Astle , Jascha Achterberg , Danyal Akarca

This paper studies a passive localization system, where an extremely large-scale antenna array (ELAA) is deployed at the base station (BS) to locate a user equipment (UE) residing in its near-field (Fresnel) region. We propose a novel…

信号处理 · 电气工程与系统科学 2024-05-27 Xiaojun Yuan , Yuqing Zheng , Mingchen Zhang , Boyu Teng , Wenjun Jiang

In the nonlinear prediction of scalar time series, the common practice is to reconstruct the state space using time-delay embedding and apply a local model on neighborhoods of the reconstructed space. The method of false nearest neighbors…

混沌动力学 · 物理学 2008-09-15 I. Vlachos , D. Kugiumtzis

This paper studies a passive localization system, where an extremely large-scale antenna array (ELAA) is deployed at the base station (BS) to locate a user equipment (UE) residing in its near-field (Fresnel) region. We propose a novel…

信号处理 · 电气工程与系统科学 2024-06-27 Xiaojun Yuan , Yuqing Zheng , Mingchen Zhang , Boyu Teng , Wenjun Jiang

In the reconstruction process of unknown multiple scattering objects in inverse medium scattering problems, the first important step is to effectively locate some approximate domains that contain all inhomogeneous media. Without such an…

数值分析 · 数学 2015-06-12 Keji Liu , Jun Zou

Narrowband and broadband indoor radar images significantly deteriorate in the presence of target dependent and independent static and dynamic clutter arising from walls. A stacked and sparse denoising autoencoder (StackedSDAE) is proposed…

信号处理 · 电气工程与系统科学 2022-01-21 Shobha Sundar Ram , Shelly Vishwakarma , Akanksha Sneh , Kainat Yasmeen

We propose a new concept of rateless auto-encoders (RL-AEs) that enable a flexible latent dimensionality, which can be seamlessly adjusted for varying distortion and dimensionality requirements. In the proposed RL-AEs, instead of a…

机器学习 · 计算机科学 2020-05-07 Toshiaki Koike-Akino , Ye Wang

Spatially structured beams have emerged as a promising technology for enhancing spectrum efficiency (SE) in sixth-generation (6G) networks. However, structured beam schemes based on fixed-position antennas (FPAs) fail to fully exploit the…

信号处理 · 电气工程与系统科学 2026-02-10 Hongyun Jin , Wenchi Cheng , Jingqing Wang

We assess a neural network (NN) method for reconstructing 3D cosmological density and velocity fields (target) from discrete and incomplete galaxy distributions (input). We employ second-order Lagrangian Perturbation Theory to generate a…

宇宙学与河外天体物理 · 物理学 2023-06-02 Punyakoti Ganeshaiah Veena , Robert Lilow , Adi Nusser

Extremely large aperture arrays (ELAAs) and reconfigurable intelligent surfaces (RISs) are candidate enablers to realize connectivity goals for the sixth-generation (6G) wireless networks. For instance, ELAAs can provide orders-of-magnitude…

信号处理 · 电气工程与系统科学 2025-02-25 Nikolaos Kolomvakis , Alva Kosasih , Emil Björnson

We investigate the effect of channel aging on multi-cell massive multiple-input multiple-output (MIMO) vehicular networks in a generic non-isotropic scattering environment. Based on the single cluster scattering assumption and the von Mises…

信息论 · 计算机科学 2022-10-20 Huafu Li , Liqin Ding , Yang Wang , Zhenyong Wang

Channel estimation is a fundamental task in communication systems and is critical for effective demodulation. While most works deal with a simple scenario where the measurements are corrupted by the additive white Gaussian noise (AWGN),…

信号处理 · 电气工程与系统科学 2024-12-10 Yifan Wang , Chengjie Yu , Jiang Zhu , Fangyong Wang , Xingbin Tu , Yan Wei , Fengzhong Qu

Spiking Neural Networks (SNNs) provide a promising framework for energy-efficient and biologically grounded computation; however, scalable learning in deep recurrent architectures with sparse connectivity remains a major challenge. In this…

神经与进化计算 · 计算机科学 2026-05-04 Bo Tang , Weiwei Xie

The susceptibility of millimeter-wave (mmWave) signals to physical blockage and abrupt signal strength variations presents a challenge to reliable 5G communication. This work proposes and examines the feasibility of utilizing…

信号处理 · 电气工程与系统科学 2019-11-14 Ziad Ali , Alexandra Duel-Hallen , Hans Hallen