This is our latest selection of worldwide publications and patents in english on Examples of Fast Fourier Transform (FFT), between many scientific online journals, classified and focused on fast fourier, FFT, discrete fourier and Cooley–Tukey.
Research on Approximate Computation of Signal Processing Algorithms for AIoT Processors Based on Deep Learning
Published on 2025-03-07 by Yingzhe Liu, Fangfa Fu, Xuejian Sun @MDPI
Abstract: In the post-Moore era, the excessive amount of information brings great challenges to the performance of computing systems. To cope with these challenges, approximate computation has developed rapidly, which enhances the system performance with minor degradation in accuracy. In this paper, we investigate the utilization of an Artificial Intelligence of Things (AIoT) processor for approximate computing. Firstly, we employed neural architecture search (NAS) to acquire the neural network structure [...]
Our summary: Research investigates approximate computation of signal processing algorithms for AIoT processors based on deep learning. Neural architecture search is employed to acquire the neural network structure for approximate computation, which approximates functions of FFT, DCT, FIR, and IIR. Performance evaluation shows significantly higher computational efficiency on AI accelerator compared to traditional DSP implementations.
Approximate Computation, Signal Processing Algorithms, AIoT Processors, Deep Learning
Publication
Applying Acoustic Signals to Monitor Hybrid Electrical Discharge-Turning with Artificial Neural Networks
Published on 2025-02-27 by Mehdi Soleymani, Mohammadjafar Hadad @MDPI
Abstract: Artificial intelligence (AI) models have demonstrated their capabilities across various fields by performing tasks that are currently handled by humans. However, the training of these models faces several limitations, such as the need for sufficient data. This study proposes the use of acoustic signals as training data as this method offers a simpler way to obtain a large dataset compared to traditional approaches. Acoustic signals contain valuable information about the process behavior. We inve[...]
Our summary: Applying Acoustic Signals for Monitoring EDT with ANN, Investigating Preprocessing Parameters, Achieving High Classification Performance
Artificial Neural Networks, Acoustic Signals, Electrical Discharge Turning, Multilabel Classifier
Publication
An Efficient Dynamic Engineering Implementation Architecture for MIMO Radar System
Published on 2025-02-27 by Ruyue Wen, Hua Zhang, Luping Xu @MDPI
Abstract: Multiple-input multiple-output (MIMO) technology can significantly improve radar system resolution and target detection ability and become the core technology in millimeter-wave radar systems. Each antenna of a MIMO radar system generates a separate data stream, resulting in an exponential increase in the amount of data. The MIMO radar system needs to process these data efficiently and quickly to ensure the real-time performance of the system. Conventional MIMO radar engineering systems have dif[...]
Our summary: An efficient dynamic engineering implementation architecture for MIMO radar system is proposed, reducing data storage steps and improving processing speed. The method shows a 50% reduction in storage resource consumption and a 15% improvement in processing speed compared to conventional architecture, demonstrating better antenna array compatibility.
Dynamic Engineering, MIMO Radar, Efficient Processing, FPGA
Publication
Accuracy Evaluation of Multi-Technique Combination Nonlinear Terrestrial Reference Frame and EOP Based on Singular Spectrum Analysis
Published on 2025-02-26 by Qiuxia Li, Xiaoya Wang, Yabo Li @MDPI
Abstract: With the application and promotion of space geodesy, the popularization of remote sensing technology, and the development of artificial intelligence, a more accurate and stable Terrestrial Reference Frame (TRF) has become more urgent. For example, sea level change detection, crustal deformation monitoring, and driverless cars, among others, require the accuracy of the terrestrial reference frame to be better than 1 mm in positioning and 0.1 mm/a in velocity, respectively. However, the current fr[...]
Our summary: Analysis of TRF and EOP accuracy based on SSA, detection of jumps and periodic signals in coordinate residuals, improvement in accuracy and stability of TRF and EOP
Accuracy Evaluation, Multi-Technique Combination, Terrestrial Reference Frame, Singular Spectrum Analysis
Publication
Bias Estimation for Low-Cost IMU Including X- and Y-Axis Accelerometers in INS/GPS/Gyrocompass
Published on 2025-02-21 by Gen Fukuda, Nobuaki Kubo @MDPI
Abstract: Inertial navigation systems (INSs) provide autonomous position estimation capabilities independent of global navigation satellite systems (GNSSs). However, the high cost of traditional sensors, such as fiber-optic gyroscopes (FOGs), limits their widespread adoption. In contrast, micro-electromechanical system (MEMS)-based inertial measurement units (IMUs) offer a low-cost alternative; however, their lower accuracy and sensor bias issues, particularly in maritime environments, remain considerable[...]
Our summary: Improved bias estimation method for low-cost IMU including X- and Y-axis accelerometers in INS/GPS/Gyrocompass using trajectory generator-based system. Altitude-based estimation for X- and Y-axis accelerations. Validation through simulation datasets from experimental voyages.
Bias Estimation, Low-Cost IMU, Accelerometers, Inertial Navigation Systems
Publication
Doppler division multiplexing (ddm) multiple-input multiple-output (mimo) radar system and decoding method
Patent published on the 2025-02-19 in EP under Ref EP4509863 by NXP BV [NL] (Rosu Filip Alexandru [nl], Brigalda Adriana [nl], Silion Daniel [nl])
Abstract: A radar system may include transmitter modules configured to transmit multiple transmit signals in accordance with a Doppler Domain Multiplexing (DDM) scheme, receiver modules configured to receive reflections from the plurality of transmit signals reflected off an object and to generate corresponding digital signals, and a signal processor configured to generate a range-Doppler antenna cube representing the digital signals, and, for each of range bin of the cube, to generate a decoded range-Dop[...]
Our summary: Radar system with DDM and MIMO technology for signal processing and peak identification in range-Doppler antenna cube.
Doppler division multiplexing, multiple-input multiple-output, radar system, decoding method
Patent
Improved radar detection using prior tracked object information
Patent published on the 2025-02-19 in EP under Ref EP4509864 by NXP BV [NL] (Chan Lu Lu [nl], Gehrels Cornelis [nl], Sari Alp [nl], Kaneko Takeshi [nl], Paker ÖzgÜn [nl], Koppelaar Arie Geert Cornelis [nl])
Abstract: A system includes a processor and a non-transitory computer-readable medium storing machine instructions that cause the processor to perform a first fast Fourier transform (FFT) on received radar data to obtain a range-antenna data array and to perform a second FFT on the range-antenna data array to obtain a range-Doppler-antenna data cube. The processor performs peak detection on the range-Doppler-antenna data cube based on object information to obtain a subset that includes confirmed peaks and[...]
Our summary: Improved radar detection through peak detection and angle of arrival calculations using prior tracked object information for filtering candidate peaks.
radar detection, fast Fourier transform (FFT), peak detection, angle of arrival calculations
Patent
Narrowband Interference Cancellation Using a Fine Frequency Shift in Single-Carrier Frequency Domain Equalization (SC-FDE) Systems
Published on 2025-02-18 by Seung-Mi Yun, Yeong-Bin Ryu, Dong-Ho Song, Eui-Rim Jeong @MDPI
Abstract: This paper proposes a narrowband interference (NBI) cancellation technique for single-carrier frequency domain equalization (SC-FDE) systems. SC-FDE is a transmission scheme commonly used in mobile communication uplinks or low-Earth-orbit (LEO) satellite communications due to its low peak-to-average power ratio (PAPR) characteristics. In the presence of narrowband interference, removing the interference is crucial, as SC-FDE systems are vulnerable to the interference. A straightforward approach [...]
Our summary: Narrowband Interference Cancellation technique proposed for SC-FDE systems using fine frequency shift. Effective interference removal method for mobile communication and LEO satellite communications. Computer simulations validate excellent interference cancellation performance.
Frequency Shift, Narrowband Interference, SC-FDE Systems, FFT
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