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We present a new Unbiased Minimal Variance (UMV) estimator for the purpose of reconstructing the large--scale structure of the universe from noisy, sparse and incomplete data. Similar to the Wiener Filter (WF), the UMV estimator is derived…

天体物理学 · 物理学 2009-10-31 Saleem Zaroubi

This paper proposes a joint channel and data estimation (JCDE) algorithm for uplink multiuser extremely large-scale multiple-input-multiple-output (XL-MIMO) systems. The initial channel estimation is formulated as a sparse reconstruction…

信号处理 · 电气工程与系统科学 2025-08-20 Kabuto Arai , Koji Ishibashi , Hiroki Iimori , Paulo Valente Klaine , Szabolcs Malomsoky

In this work, we propose to use various artificial neural network (ANN) structures for modeling and compensation of intra- and inter-subcarrier fiber nonlinear interference in digital subcarrier multiplexing (DSCM) optical transmission…

信息论 · 计算机科学 2023-08-09 Ali Bakhshali , Hossein Najafi , Behnam Behinaein Hamgini , Zhuhong Zhang

Artificial neural networks are a promising technique for virtual analog modeling, having shown particular success in emulating distortion circuits. Despite their potential, enhancements are needed to enable effect parameters to influence…

声音 · 计算机科学 2025-08-07 Riccardo Simionato , Stefano Fasciani

THz band enabled large scale massive MIMO (M-MIMO) is considered as a key enabler for the 6G technology, given its enormous bandwidth and for its low latency connectivity. In the large-scale M-MIMO configuration, enlarged array aperture and…

信息论 · 计算机科学 2024-09-26 Pulok Tarafder , Imtiaz Ahmed , Danda B. Rawat , Ramesh Annavajjala , Kumar Vijay Mishra

An accurate channel estimation is crucial for the novel time domain synchronous orthogonal frequency-division multiplexing (TDS-OFDM) scheme in which pseudo noise (PN) sequences serve as both guard intervals (GI) for OFDM data symbols and…

信息论 · 计算机科学 2012-12-12 Ming Liu , Matthieu Crussière , Jean-François Hélard

6-DoF object pose estimation from a monocular image is challenging, and a post-refinement procedure is generally needed for high-precision estimation. In this paper, we propose a framework based on a recurrent neural network (RNN) for…

计算机视觉与模式识别 · 计算机科学 2022-04-12 Yan Xu , Kwan-Yee Lin , Guofeng Zhang , Xiaogang Wang , Hongsheng Li

Convolutional Neural Networks (CNNs) have achieved state-of-the-art performance in many computer vision tasks over the years. However, this comes at the cost of heavy computation and memory intensive network designs, suggesting potential…

计算机视觉与模式识别 · 计算机科学 2020-08-11 Kumara Kahatapitiya , Ranga Rodrigo

This paper addresses channel estimation and data equalization on frequency-selective 1-bit quantized Multiple Input-Multiple Output (MIMO) systems. No joint processing or Channel State Information is assumed at the transmitter, and…

信息论 · 计算机科学 2021-03-09 Javier García , Jawad Munir , Kilian Roth , Josef A. Nossek

The use of 2D laser scanners is attractive for the autonomous driving industry because of its accuracy, light-weight and low-cost. However, since only a 2D slice of the surrounding environment is detected at each scan, it is a challenge to…

机器人学 · 计算机科学 2019-02-25 Michelle Valente , Cyril Joly , Arnaud de La Fortelle

Bidirectional recurrent neural networks (bi-RNNs), in particular, bidirectional long short term memory (bi-LSTM), bidirectional gated recurrent unit, and convolutional bi-LSTM models have recently attracted attention for nonlinearity…

信号处理 · 电气工程与系统科学 2022-07-26 Abtin Shahkarami , Mansoor Yousefi , Yves Jaouen

Channel estimation is fundamental to wireless communications, yet it becomes increasingly challenging in massive multiple-input multiple-output (MIMO) systems where base stations employ hundreds of antennas. Traditional least-squares…

信号处理 · 电气工程与系统科学 2025-11-04 Pinjun Zheng , Md. Jahangir Hossain , Anas Chaaban

Joint channel estimation and signal detection (JCESD) is crucial in orthogonal frequency division multiplexing (OFDM) systems, but traditional algorithms perform poorly in low signal-to-noise ratio (SNR) scenarios. Deep learning (DL)…

信号处理 · 电气工程与系统科学 2024-06-24 Haocheng Ju , Haimiao Zhang , Lin Li , Xiao Li , Bin Dong

Multivariate time-series modeling and forecasting is an important problem with numerous applications. Traditional approaches such as VAR (vector auto-regressive) models and more recent approaches such as RNNs (recurrent neural networks) are…

机器学习 · 计算机科学 2017-09-12 Hardik Goel , Igor Melnyk , Arindam Banerjee

The recurrent neural network and its variants have shown great success in processing sequences in recent years. However, this deep neural network has not aroused much attention in anomaly detection through predictively process monitoring.…

机器学习 · 计算机科学 2023-09-06 Jiaqi Qiu , Yu Lin , Inez Zwetsloot

We present the Video Ladder Network (VLN) for efficiently generating future video frames. VLN is a neural encoder-decoder model augmented at all layers by both recurrent and feedforward lateral connections. At each layer, these connections…

机器学习 · 计算机科学 2017-01-02 Francesco Cricri , Xingyang Ni , Mikko Honkala , Emre Aksu , Moncef Gabbouj

We present Recurrent Video Masked-Autoencoders (RVM): a novel approach to video representation learning that leverages recurrent computation to model the temporal structure of video data. RVM couples an asymmetric masking objective with a…

计算机视觉与模式识别 · 计算机科学 2026-04-22 Daniel Zoran , Nikhil Parthasarathy , Yi Yang , Drew A Hudson , Joao Carreira , Andrew Zisserman

We investigate the complexity and performance of recurrent neural network (RNN) models as post-processing units for the compensation of fibre nonlinearities in digital coherent systems carrying polarization multiplexed 16-QAM and 32-QAM…

信号处理 · 电气工程与系统科学 2021-07-02 Stavros Deligiannidis , Charis Mesaritakis , Adonis Bogris

Deep unfolding methods---for example, the learned iterative shrinkage thresholding algorithm (LISTA)---design deep neural networks as learned variations of optimization methods. These networks have been shown to achieve faster convergence…

机器学习 · 计算机科学 2020-03-19 Huynh Van Luong , Boris Joukovsky , Nikos Deligiannis

Viewpoint estimation from 2D rendered images is helpful in understanding how users select viewpoints for volume visualization and guiding users to select better viewpoints based on previous visualizations. In this paper, we propose a…

图形学 · 计算机科学 2019-02-04 Neng Shi , Yubo Tao