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Reconfigurable intelligent surface (RIS) is an emerging technology for improving performance in fifth-generation (5G) and beyond networks. Practically channel estimation of RIS-assisted systems is challenging due to the passive nature of…

信号处理 · 电气工程与系统科学 2021-07-16 Nipuni Ginige , K. B. Shashika Manosha , Nandana Rajatheva , Matti Latva-aho

Affective computing is an important branch of artificial intelligence, and with the rapid development of brain computer interface technology, emotion recognition based on EEG signals has received broad attention. It is still a great…

信号处理 · 电气工程与系统科学 2022-12-26 Yongling Xu , Yang Du , Jing Zou , Tianying Zhou , Lushan Xiao , Li Liu , Pengcheng

Source number detection is a critical problem in array signal processing. Conventional model-driven methods e.g., Akaikes information criterion (AIC) and minimum description length (MDL), suffer from severe performance degradation when the…

信息论 · 计算机科学 2020-02-19 Yuwen Yang , Feifei Gao , Cheng Qian , Guisheng Liao

Discretization invariant learning aims at learning in the infinite-dimensional function spaces with the capacity to process heterogeneous discrete representations of functions as inputs and/or outputs of a learning model. This paper…

机器学习 · 计算机科学 2022-09-07 Yong Zheng Ong , Zuowei Shen , Haizhao Yang

Image segmentation is pivotal in medical image analysis, facilitating clinical diagnosis, treatment planning, and disease evaluation. Deep learning has significantly advanced automatic segmentation methodologies by providing superior…

图像与视频处理 · 电气工程与系统科学 2026-01-22 Zhengyong Huang , Ning Jiang , Xingwen Sun , Lihua Zhang , Peng Chen , Jens Domke , Yao Sui

Dimension Estimation (DE) and Dimension Reduction (DR) are two closely related topics, but with quite different goals. In DE, one attempts to estimate the intrinsic dimensionality or number of latent variables in a set of measurements of a…

机器学习 · 计算机科学 2019-09-25 Nitish Bahadur , Randy Paffenroth

Extreme Learning Machine (ELM) is an efficient and effective least-square-based learning algorithm for classification, regression problems based on single hidden layer feed-forward neural network (SLFN). It has been shown in the literature…

机器学习 · 计算机科学 2020-11-05 Ramesh Ragala , Bharadwaja kumar

In this paper, we propose a multi-channel network for simultaneous speech dereverberation, enhancement and separation (DESNet). To enable gradient propagation and joint optimization, we adopt the attentional selection mechanism of the…

声音 · 计算机科学 2020-11-17 Yihui Fu , Jian Wu , Yanxin Hu , Mengtao Xing , Lei Xie

Accurate and efficient estimation of the high dimensional channels is one of the critical challenges for practical applications of massive multiple-input multiple-output (MIMO). In the context of hybrid analog-digital (HAD) transceivers,…

信息论 · 计算机科学 2022-02-08 Jiabao Gao , Caijun Zhong , Geoffrey Ye Li , Zhaoyang Zhang

Multi-frame algorithms for single-channel speech enhancement are able to take advantage from short-time correlations within the speech signal. Deep Filtering (DF) was proposed to directly estimate a complex filter in frequency domain to…

音频与语音处理 · 电气工程与系统科学 2023-05-16 Hendrik Schröter , Tobias Rosenkranz , Alberto N. Escalante-B. , Andreas Maier

Underwater images normally suffer from degradation due to the transmission medium of water bodies. Both traditional prior-based approaches and deep learning-based methods have been used to address this problem. However, the inflexible…

计算机视觉与模式识别 · 计算机科学 2025-11-25 Shixuan Xu , Hao Qi , Wei Wang , Chao Huang , Jie Wen , Junyu Dong , Xinghui Dong

Channel estimation is of crucial importance in massive multiple-input multiple-output (m-MIMO) visible light communication (VLC) systems. In order to tackle this problem, a fast and flexible denoising convolutional neural network…

信号处理 · 电气工程与系统科学 2019-11-19 Zhipeng Gao , Yuhao Wang , Xiaodong Liu , Fuhui Zhou , Kai-Kit Wong

In this paper, we demonstrate a computationally efficient new approach based on deep learning (DL) techniques for analysis, design, and optimization of electromagnetic (EM) nanostructures. We use the strong correlation among features of a…

机器学习 · 计算机科学 2020-02-13 Yashar Kiarashinejad , Sajjad Abdollahramezani , Ali Adibi

In this paper, we propose an algorithm for channel estimation, acquisition and tracking, for orthogonal frequency division multiplexing (OFDM) systems. The proposed algorithm is suitable for vehicular communications that encounter very high…

信息论 · 计算机科学 2016-02-03 Mahmoud Ashour , Amr El-Keyi

In this paper, an unsupervised deep learning framework based on dual-path model-driven variational auto-encoders (VAE) is proposed for angle-of-arrivals (AoAs) and channel estimation in massive MIMO systems. Specifically designed for…

信号处理 · 电气工程与系统科学 2023-05-31 Zhiheng Guo , Yuanzhang Xiao , Xiang Chen

Electrocardiogram (ECG) detection and delineation are key steps for numerous tasks in clinical practice, as ECG is the most performed non-invasive test for assessing cardiac condition. State-of-the-art algorithms employ digital signal…

机器学习 · 计算机科学 2020-05-12 Guillermo Jimenez-Perez , Alejandro Alcaine , Oscar Camara

The objective assessment of image quality (IQ) has been advocated for the analysis and optimization of medical imaging systems. One method of obtaining such IQ metrics is through a mathematical observer. The Bayesian ideal observer is…

信号处理 · 电气工程与系统科学 2025-08-19 Jason L. Granstedt , Weimin Zhou , Mark A. Anastasio

We consider the use of deep neural network (DNN) to develop a decision-directed (DD)-channel estimation (CE) algorithm for multiple-input multiple-output (MIMO)-space-time block coded systems in highly dynamic vehicular environments. We…

信号处理 · 电气工程与系统科学 2019-01-14 Mehrtash Mehrabi , Mostafa Mohammadkarimi , Masoud Ardakani , Yindi Jing

We address the problem of channel estimation for cyclic-prefix (CP) Orthogonal Frequency Division Multiplexing (OFDM) systems. We model the channel as a vector of unknown deterministic constants and hence, do not require prior knowledge of…

信息论 · 计算机科学 2014-10-23 Karthik Upadhya , Chandra Sekhar Seelamantula , K. V. S. Hari

In orthogonal frequency division multiplexing (OFDM)-based wireless communication systems, the bit error rate (BER) performance is heavily dependent on the accuracy of channel estimation. It is important for a good channel estimator to be…

信息论 · 计算机科学 2022-01-31 Athur Michon , Fayçal Ait Aoudia , K. Pavan Srinath