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Circuits, Systems, and Signal Processing OnlineFirst articles

An FPGA-Based Reconfigurable Convolutional Neural Network Accelerator for Tiny YOLO-V3

In recent years, the development of deep learning has progressed rapidly, leading to broader applications of neural networks across various domains. These applications are becoming increasingly integrated into our daily lives, such as in mobile …

A Sparse Representation Direct Position Determination Method Based on Iterative Local Search

This paper focuses on the sparse representation direct position determination (SR-DPD) method in motion scenarios with a single station. In contrast to the conventional two-step positioning method, the SR-DPD method eliminates the need to estimate …

A New Design and VLSI Implementation of Symmetric Daubechies Wavelet Filter Bank for Image Processing Applications

  • Open Access

Due to the irrational coefficients, the orthogonal wavelet filter banks (FBs) need a lot of resources when implemented on hardware. As a result, there is a decrease in operating speed, a significant memory requirement, and an increase in power …

Automated ECG Analysis with Dual-Channel SqueezeNet Using Hilbert Huang Transform, Fuzzy Entropy, and Hurst Exponent

Cardiovascular diseases (CVDs) are a major public health concern. Electrocardiograms (ECG) are very often used as a tool for CVD diagnosis. Cardiologists scrutinize ECG, searching for signs for diagnosis. Faced with a growing number of patients …

Graph Neural Network-Based DOA Estimation Method Exploring Training Data Association

Considering the utilization of the correlation between training data, this paper proposes a graph neural network-based deep learning method for the direction of arrival (DOA) estimation by transforming the DOA estimation problem into a node …

Time Difference Localization Algorithm Based on Improved Eel and Grouper Optimizer

As is well known, Time Difference of Arrival (TDOA) is a technique used for locating the position of a signal source based on the time difference of when the signal arrives at multiple receivers. The iterative method enhances the function through …

Efficiently Designed Hammerstein Spline Adaptive Filter for Ocular Noise Extraction from EEG Signals

Noise extraction from electroencephalogram (EEG) signals has become indispensable in the clinical field. This paper mainly focuses on designing an efficient Hammerstein spline adaptive filter (HSAF) for the ocular noise extraction from the EEG …

Probabilistic Entropy and Other Uncertainty Principles for the Multi-dimensional Special Affine Fourier Transform

The multi-dimensional Special Affine Fourier transform (MSAFT) is an intriguing new addition to the integral transform class, which generalizes several popular unitary transformations, signal processing transformations, and mathematical procedures …

GRFN: A Group Residual Feature Network for Lightweight Image Super-Resolution

In recent years, image super-resolution (SR) research has made remarkable progress. However, the complexity of the models, such as increased network depth, attention mechanisms, and Transformer structures, has resulted in high computational costs …

Spatially Invariant Convolutional Spiking Neural Network For Resource-Constrained IoT Devices

The image classification accuracy of convolutional spiking neural network (CSNN) decreases substantially for a distorted image dataset (images with affine transformation). To improve the classification accuracy of CSNN for distorted image dataset …

Minimized Mainlobe Width Beamforming Based on Sparse Optimization

In array signal processing, some beamforming algorithms require strict prior conditions on the mainlobe width. Therefore, this paper proposes a sparse optimization-based beamforming scheme, namely the minimum mainlobe width algorithm, addressing …

ATP-Optimized Implementation of Four-Way Toom-Cook Multiplications on FPGAs for Large Integer Arithmetic

Toom-Cook multiplication algorithm is one of the most efficient method compared to other traditional large-integer multiplication algorithms. However, in most cases, implementation of this algorithm in hardware is practically avoided due to …

A New Fractional-Order Regularization for Speckle Image Denoising: Preserving Edges and Features

In this paper, we elaborate a novel variational model for image denoising, particularly focusing on scenarios with high levels of speckle noise. Our approach integrates fractional-order regularizers to better preserve image edges, overcoming the …

Design of Event-Triggered Finite-Time Dissipative Control for Fractional-Order Time-Delay Interconnected Systems

We consider the event-triggered finite-time dissipative control problem for fractional-order interconnected systems with an unknown time-varying delay in the state vector. The controller in this paper uses only information of the state vector when …

Identification of Frequency Band of EEG and fNIRS Signals Based on FPGA

In biomedical applications, the data acquisition device for brain activities has gained significant popularity. Numerous brain-acquisition devices have been implemented using various electronic devices. While some devices are sophisticated, the …

A New Modified Clustering Technique for Linear Dynamic Systems Order Reduction and Controller Design

The paper suggests a new method for controller design and order reduction of LTI higher-order systems (HOSs). This research uses the model dominance index to determine pole dominance. This metric identifies the dominant poles, even if they are not …

A Multi-scale Single Ultra-High-Definition Image Dehazing Method Based on Multi-resolution Feature Fusion

Currently, significant progress has been made in conventional-size image dehazing technology, but restoring ultra-high-definition images is still a challenging task. Existing ultra-high-definition image dehazing methods usually cut down the …

Miniaturization of Insertable Cardiac Monitor: ECG Signal Processing Based on Stochastic Computing

The key requirements for medical implantable devices are low energy consumption and reliable computational precision. In this context, we design a novel filter for ECG signal denoising using the stochastic computing (SC) method. Compared to …

14.5–24.5 GHz LNA with 10.6 dB Gain Tuning Range (21.4–10.8 dB) and 2.11–3.08 dB NFavg Using Body-to-Source Floating and Mutual Coupling

We demonstrate a novel 7.7–12.5 mW, 14.5–24.5 GHz low-noise amplifier (LNA). It achieves decent 10.6 dB gain tuning range (21.4–10.8 dB) and outstanding 2.11–3.08 dB average noise figure (NFavg) due to adoption of the body-to-source floating …

Artificial Bandwidth Extension using Frequency Shifting, Optimization, and Deep Neural Network

Artificial bandwidth extension (ABE) approach expands signal bandwidth. In narrowband communication, the ABE approach is used to expand the bandwidth at the receiver end of a narrowband signal. An ABE approach is proposed to improve the perception …