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Journal articles on the topic 'Look up-tables (LUT)'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Yang, Jun-Yu, Wei-Jhe Ma, Feng-Ting Pai, and Ching-Chun Lin. "P‐129: A Self‐adaptive Gamma LUT Conversion to Achieve Optical Consistency under a Variety of IR‐drop Compensation Scenarios." SID Symposium Digest of Technical Papers 54, no. 1 (2023): 1330–33. http://dx.doi.org/10.1002/sdtp.16828.

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The OLED display can support various IRC conditions for better user experience. However, the more IRC conditions in display, the more gamma Look‐Up Tables (LUT) are required. This paper proposed a method to convert gamma LUT automatically according to IRC condition of itself. The proposed method can save the One‐Time‐Programmable (OTP) memory and shorten the production time. Up to 80% OTP size and time could be saved in the experimental results. In addition, the converted gamma LUT have better optical consistency than the traditional measured gamma LUT.

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Al-Ibrahim (Jarrah), M. M. "Extremely High Frequency Resolution and Low Harmonic Distortion Digital Look-Up-Table Sinusoidal Oscillators." Active and Passive Electronic Components 23, no. 2 (2000): 101–13. http://dx.doi.org/10.1155/apec.23.101.

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New techniques to efficiently increase the frequency resolution of digital sinusoidal oscillators based on look-up-table (LUT) methods are proposed. The increase in frequency resolution is achieved while maintaining very low level of spurious harmonic distortion. The proposed techniques increase the LUT length to a level at which the spurious harmonic distortion is negligible. The first proposed technique is based on partitioning the address register into three sets and dividing the available LUT length into three smaller tables addressed according to the content of the address register sets.

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3

Sun, Jun-Wei, Xing-Tong Zhao, and Yan-Feng Wang. "Multi-Input Look-Up-Table Design Based on Nanometer Memristor." Journal of Nanoelectronics and Optoelectronics 15, no. 1 (2020): 113–21. http://dx.doi.org/10.1166/jno.2020.2721.

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The logic blocks of Field Programmable Gate Array (FPGA) basic unit are mainly composed of Look-Up-Tables (LUTs). The traditional LUTs use the static random access memory (SRAM), which causes FPGA reach the limitation in term of the density, speed, and configuration overhead. In this paper, a novel nanometer memristor-based LUT (NMLUT) is composed of memristors, MOS field effect transistors, decoders, resistors. A three-input NMLUT and a four-input NMLUT circuits are investigated. Moreover, an adder is used to verify the practicality of NMLUT circuit. The proposed NMLUT circuit can implement s

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4

Putra, Agfianto Eko, Oskar Natan, and Jazi Eko Istiyanto. "Optimizing FPGA Resource Allocation for SHA-3 Using DSP48 and Pipelining Techniques." IIUM Engineering Journal 26, no. 1 (2025): 240–53. https://doi.org/10.31436/iiumej.v26i1.3328.

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Deploying SHA-3 on FPGA devices requires significant resource allocation; however, the resulting throughput still needs improvement. This study employs the DSP48 module on the Xilinx FPGA to address this issue and implements an eight-stage pipeline methodology to minimize latency. The implementation design comprises a datapath and controller module, utilizing a Xilinx Artix-7-100T series FPGA as the hardware. This method makes use of FPGA resources like Look-Up Tables (LUT), Look-Up Table Random Access Memory (LUTRAM), Flip-Flops (FF), Block RAM (BRAM), Digital Signal Processing (DSP), Input/O

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Barkalov, Alexander, Larysa Titarenko, and Sławomir Chmielewski. "Mixed Encoding of Collections of Output Variables for LUT-Based Mealy FSMs." Journal of Circuits, Systems and Computers 28, no. 08 (2019): 1950131. http://dx.doi.org/10.1142/s0218126619501317.

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A method is proposed targeting the decrease of the number of look-up tables (LUTs) in logic circuits of field programmable gate arrays (FPGA)-based Mealy finite state machines. The method is based on constructing a partition for the set of output variables. It diminishes the number of additional variables encoding the collections of output variables (COVs). A formal method is proposed for finding the partition. An example of synthesis is given, as well as the results of investigations. The investigations were conducted for standard benchmarks.

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6

Ko, Hyung-Hwa. "Enhanced Binary MQ Arithmetic Coder with Look-Up Table." Information 12, no. 4 (2021): 143. http://dx.doi.org/10.3390/info12040143.

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Binary MQ arithmetic coding is widely used as a basic entropy coder in multimedia coding system. MQ coder esteems high in compression efficiency to be used in JBIG2 and JPEG2000. The importance of arithmetic coding is increasing after it is adopted as a unique entropy coder in HEVC standard. In the binary MQ coder, arithmetic approximation without multiplication is used in the process of recursive subdivision of range interval. Because of the MPS/LPS exchange activity that happens in the MQ coder, the output byte tends to increase. This paper proposes an enhanced binary MQ arithmetic coder to

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7

Magini, Jacopo, Pietro Pisciotta, Mohammad Hussein, et al. "Integration of microdosimetry into treatment planning systems using look-up tables (LUT): A proof-of-concept." Physica Medica 136 (August 2025): 105031. https://doi.org/10.1016/j.ejmp.2025.105031.

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Al-Ibrahim (Jarrah), M. M. "A Novel Coherent Digital Sweep Oscillator with Extremely Low Sweep Rates and Harmonic Distortion." Active and Passive Electronic Components 23, no. 4 (2001): 197–217. http://dx.doi.org/10.1155/apec.23.197.

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A novel technique to efficiently increase the resolution of coherent digital sweep oscillators based on look-up-table (LUT) methods is proposed. The increase in resolution measured in terms of sweep rates is achieved while maintaining very low levels of spurious harmonic distortion. The proposed technique increases the LUT length to a level at which the spurious harmonic distortion is negligible. The proposed technique is based on partitioning the address register into three sets and dividing the available LUT length into five smaller tables addressed according to the content of the three addr

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Choi, Soyeon, and Hoyoung Yoo. "Fast Logic Function Extraction of LUT from Bitstream in Xilinx FPGA." Electronics 9, no. 7 (2020): 1132. http://dx.doi.org/10.3390/electronics9071132.

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This paper presents a fast method to extract logic functions of look-up tables (LUTs) from a bitstream in Xilinx FPGAs. In general, FPGAs utilize LUTs as a primary resource to realize a logic function, and a typical N-input LUT comprises 2N 1-bit SRAM and N – 1 multiplexers. Whereas the previous research demands 2N exhaustive processing to find a mapping rule between an LUT and a bitstream, the proposed method decreases the processing to 2N by eliminating unnecessary processing. Experimental results show that the proposed method can reduce reversing time by more than 57% and 85% for Xilinx Spa

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10

Kim, HanBit, HeeSeok Kim, and Seokhie Hong. "Power-Balancing Software Implementation to Mitigate Side-Channel Attacks without Using Look-Up Tables." Applied Sciences 10, no. 7 (2020): 2454. http://dx.doi.org/10.3390/app10072454.

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With the increasing number of side-channel attacks, countermeasure designers continue to develop various implementations to address such threats. Power-balancing (PB) methods hold the number of 1s and/or transitions (i.e., Hamming weight/distance) of internal processes constant to ensure side-channel safety in an environment in which it is difficult to use random numbers. Most existing studies employed look-up tables (LUTs) to compute those operations, except for XOR and NOT operations. However, LUT-based schemes exhibit some side-channel issues in the address bits of LUTs. In this paper, we p

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11

A, Umamaheswari, and S. Ewins Pon Pushpa. "Difference Adder Graph Algorithm for Reducing LUT Size." Journal of VLSI Design and Signal Processing 10, no. 1 (2024): 19–27. http://dx.doi.org/10.46610/jovdsp.2024.v10i01.003.

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The current study introduces an implementation of the Difference Adder Graph Algorithm (DAGA) using Verilog. DAGA, rooted in graph theory and adder circuits, aims to diminish Look Up Tables (LUTs) and power consumption in Field Programmable Gate Arrays (FPGAs). By reducing the number of LUTs required for a specific functionality, DAGA offers a promising alternative for digital circuit optimization. To evaluate its efficacy, the paper contrasts DAGA with the Multiple Constant Multiplication (MCM) method, which leverages Carry Save Adder (CSA) architecture and exploits signed-digit number repres

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Fiori, Simone. "Asymmetric Variate Generation via a Parameterless Dual Neural Learning Algorithm." Computational Intelligence and Neuroscience 2008 (2008): 1–8. http://dx.doi.org/10.1155/2008/426080.

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In a previous work (S. Fiori, 2006), we proposed a random number generator based on a tunable non-linear neural system, whose learning rule is designed on the basis of a cardinal equation from statistics and whose implementation is based on look-up tables (LUTs). The aim of the present manuscript is to improve the above-mentioned random number generation method by changing the learning principle, while retaining the efficient LUT-based implementation. The new method proposed here proves easier to implement and relaxes some previous limitations.

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13

Khurshid, Burhan, and Roohie Naaz Mir. "High Efficiency Generalized Parallel Counters for Look-Up Table Based FPGAs." International Journal of Reconfigurable Computing 2015 (2015): 1–16. http://dx.doi.org/10.1155/2015/518272.

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Generalized parallel counters (GPCs) are used in constructing high speed compressor trees. Prior work has focused on utilizing the fast carry chain and mapping the logic onto Look-Up Tables (LUTs). This mapping is not optimal in the sense that the LUT fabric is not fully utilized. This results in low efficiency GPCs. In this work, we present a heuristic that efficiently maps the GPC logic onto the LUT fabric. We have used our heuristic on various GPCs and have achieved an improvement in efficiency ranging from 33% to 100% in most of the cases. Experimental results using Xilinx 5th-, 6th-, and

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Lu, Sheng, Liuting Shang, Qianhou Qu, Sungyong Jung, Qilian Liang, and Chenyun Pan. "An Efficient Multi-Output LUT Mapping Technique for Field-Programmable Gate Arrays." Electronics 14, no. 9 (2025): 1782. https://doi.org/10.3390/electronics14091782.

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The use of multi-output look-up tables (LUTs) is a widely adopted approach in contemporary commercial field-programmable gate arrays (FPGAs). Larger LUT configurations (e.g., six-input LUTs) can be partitioned into smaller LUTs (e.g., two five-input LUTs, maintaining a total input count of less than six). This capability of generating a second output from a larger LUT is not only crucial for reducing logic cell count and enhancing the utilization efficiency of logic resources—thus conserving area—but also plays a key role in optimizing system-level delays and energy consumption. In this paper,

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Zhang, Erhu, Yan Zhang, and Jinghong Duan. "Color Inverse Halftoning Method with the Correlation of Multi-Color Components Based on Extreme Learning Machine." Applied Sciences 9, no. 5 (2019): 841. http://dx.doi.org/10.3390/app9050841.

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Look-up table (LUT) based method is a popular and effective way for inverse halftoning. However, it still has very large development space to improve the reconstructed color image quality for color halftone images, because most of the existing color inverse halftoning methods are the simple extension of LUT methods to each color components separately. To this end, this paper presents a novel color inverse halftoning method by exploiting the correlation of multi-color components. Through considering all existent contone values with the same halftone pattern in three color component tables, we f

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Khurshid, Burhan. "Improved Synthesis of Generalized Parallel Counters on FPGAs Using Only LUTs." Journal of Circuits, Systems and Computers 27, no. 01 (2017): 1850002. http://dx.doi.org/10.1142/s0218126618500020.

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Generalized parallel counters (GPCs) are frequently used to construct high speed compressor trees on field programmable gate arrays (FPGAs). The introduction of fast carry-chain in FPGAs has greatly improved the performance of these elements. Evidently, a large number of GPCs have been proposed in literature that use a combination of look-up tables (LUTs) and carry-chains. In this paper, we take an alternate approach and try to eliminate the carry-chain from the GPC structure. We present a heuristic that aims at synthesizing GPCs on FPGAS using only the general LUT fabric. The resultant GPCs a

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17

Asghar, Ali, Muhammad Mazher Iqbal, Waqar Ahmed, Mujahid Ali, Husain Parvez, and Muhammad Rashid. "Exploring Shared SRAM Tables in FPGAs for Larger LUTs and Higher Degree of Sharing." International Journal of Reconfigurable Computing 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/7021056.

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In modern SRAM based Field Programmable Gate Arrays, a Look-Up Table (LUT) is the principal constituent logic element which can realize every possible Boolean function. However, this flexibility of LUTs comes with a heavy area penalty. A part of this area overhead comes from the increased amount of configuration memory which rises exponentially as the LUT size increases. In this paper, we first present a detailed analysis of a previously proposed FPGA architecture which allows sharing of LUTs memory (SRAM) tables among NPN-equivalent functions, to reduce the area as well as the number of confi

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18

Sivaprasad, Ponduri, Anandi Venkataraman, and P. Satyanarayana Murty. "Enhancing radar applications: FPGA-driven phase estimation with floating point arithmetic." Bulletin of Electrical Engineering and Informatics 13, no. 5 (2024): 3233–42. http://dx.doi.org/10.11591/eei.v13i5.7074.

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This article introduces a paradigm shift in radar technology with field programmable gate array (FPGA)-driven Phase estimation using floating point arithmetic (FPA). Leveraging FPGA’s parallel processing and the precision of FPA, this work promises enhanced accuracy and efficiency. The proposed system’s key performance metrics include the following: number of slices: 20,941, number of look-up tables (LUTs): 22,371, number of digital signal processing (DSP) blocks: 2, delay: 112.9 ns, and power consumption: 7.2 mw. A comparative analysis showcases advantages in area utilization, LUT, and DSP bl

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19

Dvořák, Václav, and Petr Mikušek. "Design of Arbiters and Allocators Based on Multi-Terminal BDDs." JUCS - Journal of Universal Computer Science 16, no. (14) (2010): 1826–52. https://doi.org/10.3217/jucs-016-14-1826.

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Assigning one (more) shared resource(s) to several requesters is a function of arbiters (allocators). This class of decision-making modules can be implemented in a number of ways, from hardware to firmware to software. The paper presents a new computer-aided technique that can produce representations of arbiters/allocators in a form of a Multi-Terminal Binary Decision Diagram (MTBDD) with close to minimum cost and width. This diagram can then serve as a prototype for a cascade of multiple-output look-up tables (LUTs) that implements the given function, or for efficient firmware implementation.

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20

Gerhard, W., and R. Knöchel. "WCDMA outphasing power amplifier with a software defined transmitter/receiver architecture for determination of the predistortion function." Advances in Radio Science 4 (September 4, 2006): 125–33. http://dx.doi.org/10.5194/ars-4-125-2006.

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Abstract. A flexible and easily configurable software defined transmitter/receiver (TX/RX) architecture is described, which allows the determination of the distorted complex transfer characteristics of a 3 port nonlinear outphasing power amplifier (PA) for application in a WCDMA base station. The TX/RX architecture is capable of generating high precision single sideband signals (SSB) using a DSP algorithm, which is almost insensitive to measurement errors and to the frequency response of the output measurement channel. Based on this an inverse predistortion function for a necessary linearizati

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M., S. Sudha, and C. Thanuja T. "FPGA Implementation of DTCWT and PCA Based Watermarking Technique." International Journal of Reconfigurable and Embedded Systems 7, no. 2 (2018): 82–90. https://doi.org/10.11591/ijres.v7.i2.pp82-90.

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The hardware implementation of the image watermarking algorithm offers numerous distinct advantages over the software implementation in terms of low power consumption, less area usage and reliability. The advantages of Dual Tree Complex Wavelet Transform (DTCWT) and Principle Component Analysis (PCA) techniques are extracted to improve the robustness and perceptibility. The hardware watermarking solution is more economical, because adding the component only takes up a small dedicated area of silicon. The algorithm is developed and simulated using Matlab,  Simulink and system generator. Th

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Barkalov, Alexander, Larysa Titarenko, Kazimierz Krzywicki, and Svetlana Saburova. "Improving Characteristics of LUT-Based Three-Block Mealy FSMs’ Circuits." Electronics 11, no. 6 (2022): 950. http://dx.doi.org/10.3390/electronics11060950.

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One of the very important problems connected with FPGA-based design is reducing the hardware amount in implemented circuits. In this paper, we discuss the implementation of Mealy finite state machines (FSMs) by circuits consisting of look-up tables (LUT). A method is proposed to reduce the LUT count of three-block circuits of Mealy FSMs. The method is based on finding a partition of set of internal states by classes of compatible states. To reduce the LUT count, we propose a special kind of state code, named complex state codes. The complex codes include two parts. The first part includes the

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Rakanovic, Damjan M., Vuk Vranjkovic, and Rastislav J. R. Struharik. "Argus CNN Accelerator Based on Kernel Clustering and Resource-Aware Pruning." Elektronika ir Elektrotechnika 27, no. 3 (2021): 57–70. http://dx.doi.org/10.5755/j02.eie.28922.

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Paper proposes a two-step Convolutional Neural Network (CNN) pruning algorithm and resource-efficient Field-programmable gate array (FPGA) CNN accelerator named “Argus”. The proposed CNN pruning algorithm first combines similar kernels into clusters, which are then pruned using the same regular pruning pattern. The pruning algorithm is carefully tailored for FPGAs, considering their resource characteristics. Regular sparsity results in high Multiply-accumulate (MAC) efficiency, reducing the amount of logic required to balance workloads among different MAC units. As a result, the Argus accelera

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Zhao, Xiaosong, and Yao Huang. "A Comparison of Three Gap Filling Techniques for Eddy Covariance Net Carbon Fluxes in Short Vegetation Ecosystems." Advances in Meteorology 2015 (2015): 1–12. http://dx.doi.org/10.1155/2015/260580.

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Missing data is an inevitable problem when measuring CO2, water, and energy fluxes between biosphere and atmosphere by eddy covariance systems. To find the optimum gap-filling method for short vegetations, we review three-methods mean diurnal variation (MDV), look-up tables (LUT), and nonlinear regression (NLR) for estimating missing values of net ecosystem CO2exchange (NEE) in eddy covariance time series and evaluate their performance for different artificial gap scenarios based on benchmark datasets from marsh and cropland sites in China. The cumulative errors for three methods have no consi

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Ren, Chunhui, Shunzhang Yu, Xingling Guo, Xiaoping Tan, Mingwei Ge, and Xiujian Zhu. "P‐70: A Novel Peak Luminance Correction Method Based on Global IR Drop Compensation System on AMOLED." SID Symposium Digest of Technical Papers 55, no. 1 (2024): 1653–55. http://dx.doi.org/10.1002/sdtp.17883.

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In the past year, AMOLED have been widely used in smartphones, laptops, and vehicles. Local excitation luminance is one of the important parameters to measure AMOLED quality. This feature is of great significance for realization of HDR video and getting better visual experience in sunlight environment. Due to IR drop effect in the local display, the performance of peak luminance is often skewed by luminance, chrominance, and gamma curves. The solution is adding a set of Gamma curve debugging at peak luminance of local display, which results in longer take time (TT) and greater aging pressure a

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Salmela, Perttu, Adrian Burian, Tuomas Järvinen, Aki Happonen, and Jarmo Henrik Takala. "Low-Complexity Inverse Square Root Approximation for Baseband Matrix Operations." ISRN Signal Processing 2011 (February 16, 2011): 1–8. http://dx.doi.org/10.5402/2011/615934.

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Baseband functions like channel estimation and symbol detection of sophisticated telecommunications systems require matrix operations, which apply highly nonlinear operations like division or square root. In this paper, a scalable low-complexity approximation method of the inverse square root is developed and applied in Cholesky and QR decompositions. Computation is derived by exploiting the binary representation of the fixedpoint numbers and by substituting the highly nonlinear inverse square root operation with a more implementation appropriate function. Low complexity is obtained since the

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Katsev, I. L., A. S. Prikhach, E. P. Zege, J. O. Grudo, and A. A. Kokhanovsky. "Speeding up the AOT retrieval procedure using RTT analytical solutions: FAR code." Atmospheric Measurement Techniques Discussions 3, no. 2 (2010): 1645–705. http://dx.doi.org/10.5194/amtd-3-1645-2010.

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Abstract. We present here the aerosol retrieval technique that uses radiative transfer computations in the process of retrieval rather than look-up tables (LUT). This approach provides operational satellite data processing due to the use of the accurate and extremely fast radiative transfer code RAY previously developed by authors along with approximate analytical solutions of the radiative transfer theory. The aerosol optical thickness (AOT) and Angström exponent are optimized in the iteration process using the least-squares technique with fast computations of the derivatives of radiative cha

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Li, Wenjuan, Marie Weiss, Bernard Garric, et al. "Mapping Crop Leaf Area Index and Canopy Chlorophyll Content Using UAV Multispectral Imagery: Impacts of Illuminations and Distribution of Input Variables." Remote Sensing 15, no. 6 (2023): 1539. http://dx.doi.org/10.3390/rs15061539.

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Leaf area index (LAI) and canopy chlorophyll content (CCC) are important indicators that describe the growth status and nitrogen deficiencies of crops. Several studies have been performed to estimate LAI and CCC using multispectral cameras onboard an unmanned airborne vehicle (UAV) system. However, the impacts of illuminations during UAV flight and problems of how to invert still need more investigation. UAV flights with a multispectral camera were performed under clear (diffuse ratio 0) and cloudy illumination conditions (diffuse ratio 1) over rapeseed, wheat and sunflower (only clear) fields

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Barkalov, Alexander, Larysa Titarenko, Małgorzata Mazurkiewicz, and Kazimierz Krzywicki. "Encoding of Terms in EMB-Based Mealy FSMs." Applied Sciences 10, no. 8 (2020): 2762. http://dx.doi.org/10.3390/app10082762.

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A method is proposed targeting implementation of FPGA-based Mealy finite state machines. The main goal of the method is a reduction for the number of look-up table (LUT) elements and their levels in FSM logic circuits. To do it, it is necessary to eliminate the direct dependence of input memory functions and FSM output functions on FSM inputs and state variables. The method is based on encoding of the terms corresponding to rows of direct structure tables. In such an approach, only terms depend on FSM inputs and state variables. Other functions depend on variables representing terms. The metho

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Serrano, Ronaldo, Ckristian Duran, Marco Sarmiento, Cong-Kha Pham, and Trong-Thuc Hoang. "ChaCha20–Poly1305 Authenticated Encryption with Additional Data for Transport Layer Security 1.3." Cryptography 6, no. 2 (2022): 30. http://dx.doi.org/10.3390/cryptography6020030.

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Transport Layer Security (TLS) provides a secure channel for end-to-end communications in computer networks. The ChaCha20–Poly1305 cipher suite is introduced in TLS 1.3, mitigating the sidechannel attacks in the cipher suites based on the Advanced Encryption Standard (AES). However, the few implementations cannot provide sufficient speed compared to other encryption standards with Authenticated Encryption with Associated Data (AEAD). This paper shows ChaCha20 and Poly1305 primitives. In addition, a compatible ChaCha20–Poly1305 AEAD with TLS 1.3 is implemented with a fault detector to reduce th

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Qian, Xiaojin, Liangyun Liu, Xidong Chen, Xiao Zhang, Siyuan Chen, and Qi Sun. "Global Leaf Chlorophyll Content Dataset (GLCC) from 2003–2012 to 2018–2020 Derived from MERIS and OLCI Satellite Data: Algorithm and Validation." Remote Sensing 15, no. 3 (2023): 700. http://dx.doi.org/10.3390/rs15030700.

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Leaf chlorophyll content (LCC) is a prominent plant physiological trait and a proxy for leaf photosynthetic capacity. The acquisition of LCC data over large spatial and temporal scales facilitates vegetation growth monitoring and terrestrial carbon cycle modeling. In this study, a global 500 m LCC weekly dataset (GLCC) was produced from ENVISAT MERIS and Sentinel-3 OLCI satellite data using a physical radiative transfer modeling approach that considers the influence of canopy structure and soil background. Firstly, five look-up-tables (LUTs) were generated using PROSPECT-D+4-Scale and PROSAIL-

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Shaban Hassooni, Ali, and Laith Ali Abdul Rahaim. "FPGA based modified multi-repeat distribution matcher for probabilistic amplitude shaping." Nexo Revista Científica 36, no. 05 (2023): 108–21. http://dx.doi.org/10.5377/nexo.v36i05.17298.

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The technique of probabilistic amplitude modulation, based on distribution matching, has garnered considerable attention in recent years as a means to enhance spectral efficiency and diminish the constellation energy of coded modulation. This paper introduces the implementation of Probabilistic Amplitude Modulation (PAS) using a Modified Multi-Repeat Distribution Matcher (MMRDM) on a Field Programmable Gate Array (FPGA). The Modified Multiple Repetition Distribution Matcher (MMRDM) is integrated into a 2×2 Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) sy

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Ros, Eduardo, Richard Carrillo, Eva M. Ortigosa, Boris Barbour, and Rodrigo Agís. "Event-Driven Simulation Scheme for Spiking Neural Networks Using Lookup Tables to Characterize Neuronal Dynamics." Neural Computation 18, no. 12 (2006): 2959–93. http://dx.doi.org/10.1162/neco.2006.18.12.2959.

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Nearly all neuronal information processing and interneuronal communication in the brain involves action potentials, or spikes, which drive the short-term synaptic dynamics of neurons, but also their long-term dynamics, via synaptic plasticity. In many brain structures, action potential activity is considered to be sparse. This sparseness of activity has been exploited to reduce the computational cost of large-scale network simulations, through the development of event-driven simulation schemes. However, existing event-driven simulations schemes use extremely simplified neuronal models. Here, w

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Montero, Eduardo Rodriguez, Markus Vogelsberger, and Thomas Wolbank. "Initial Rotor Position Detection of Induction Machines Using Feedforward Sensorless Saliency Separation." Power Electronics and Drives 6, no. 1 (2021): 301–13. http://dx.doi.org/10.2478/pead-2021-0020.

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Abstract The use of induction machine spatial saliencies for sensorless vector control in the proximity of zero electrical frequency has been extensively researched over the last few decades. A robust technique to extract machine saliencies is called voltage step excitation, and it computes a saliency phasor out of phase current derivatives resulting from specific voltage steps generated by the inverter switching. Within the saliency phasor, all machine saliencies appear superposed. For some machine constructions, multiple saliencies are present, containing information about the spatial, magne

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Salauyou, Valery. "Area and Performance Estimates of Finite State Machines in Reconfigurable Systems." Applied Sciences 14, no. 24 (2024): 11833. https://doi.org/10.3390/app142411833.

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Modern reconfigurable systems are typically implemented in field-programmable gate arrays (FPGAs) based on look-up tables (LUTs). Finite state machines (FSMs) perform the functions of control devices and are integral to reconfigurable systems. When designing reconfigurable systems, the problem of optimizing the area and performance of FSMs often arises. The FSM synthesis and state encoding methods generally use only one estimate of the FSM area or performance. However, regardless of the computational complexity of the FSM synthesis or state encoding method, if the estimate incorrectly reflects

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Gowda, Kavitha Malali Vishveshwarappa, Sowmya Madhavan, Stefano Rinaldi, Parameshachari Bidare Divakarachari, and Anitha Atmakur. "FPGA-Based Reconfigurable Convolutional Neural Network Accelerator Using Sparse and Convolutional Optimization." Electronics 11, no. 10 (2022): 1653. http://dx.doi.org/10.3390/electronics11101653.

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Nowadays, the data flow architecture is considered as a general solution for the acceleration of a deep neural network (DNN) because of its higher parallelism. However, the conventional DNN accelerator offers only a restricted flexibility for diverse network models. In order to overcome this, a reconfigurable convolutional neural network (RCNN) accelerator, i.e., one of the DNN, is required to be developed over the field-programmable gate array (FPGA) platform. In this paper, the sparse optimization of weight (SOW) and convolutional optimization (CO) are proposed to improve the performances of

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Buettner, Max A., Niklas Monzen, and Christoph M. Hackl. "Artificial Neural Network Based Optimal Feedforward Torque Control of Interior Permanent Magnet Synchronous Machines: A Feasibility Study and Comparison with the State-of-the-Art." Energies 15, no. 5 (2022): 1838. http://dx.doi.org/10.3390/en15051838.

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A novel Artificial Neural Network (ANN) Based Optimal Feedforward Torque Control (OFTC) strategy is proposed which, after proper ANN design, training and validation, allows to analytically compute the optimal reference currents (minimizing copper and iron losses) for Interior Permanent Magnet Synchronous Machines (IPMSMs) with highly operating point dependent nonlinear electric and magnetic characteristics. In contrast to conventional OFTC, which either utilizes large look-up tables (LUTs; with more than three input parameters) or computes the optimal reference currents numerically or analytic

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Jiang, Xingxing, Yong Xue, Chunlin Jin, Rui Bai, Yuxin Sun, and Shuhui Wu. "A Simple Band Ratio Library (BRL) Algorithm for Retrieval of Hourly Aerosol Optical Depth Using FY-4A AGRI Geostationary Satellite Data." Remote Sensing 14, no. 19 (2022): 4861. http://dx.doi.org/10.3390/rs14194861.

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The Advanced Geostationary Radiation Imager (AGRI) is one of the primary payloads aboard the FY-4A geostationary meteorological satellite, which can provide high-frequency, wide coverage, and multiple spectral channel observations for China and surrounding areas. There are currently few studies on aerosol optical depth (AOD) inversion from FY-4A AGRI data. Based on AGRI data, a new land AOD retrieval algorithm called the band ratio library (BRL) algorithm was proposed in this study. The monthly average surface reflectance band ratio library was established after obtaining the relationship of b

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Tausif, Mohd, Ekram Khan, Mohd Hasan, and Martin Reisslein. "Lifting-Based Fractional Wavelet Filter: Energy-Efficient DWT Architecture for Low-Cost Wearable Sensors." Advances in Multimedia 2020 (December 16, 2020): 1–13. http://dx.doi.org/10.1155/2020/8823689.

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This paper proposes and evaluates the LFrWF, a novel lifting-based architecture to compute the discrete wavelet transform (DWT) of images using the fractional wavelet filter (FrWF). In order to reduce the memory requirement of the proposed architecture, only one image line is read into a buffer at a time. Aside from an LFrWF version with multipliers, i.e., the LFr WF m , we develop a multiplier-less LFrWF version, i.e., the LFr WF ml , which reduces the critical path delay (CPD) to the delay T a of an adder. The proposed LFr WF m and LFr WF ml architectures are compared in terms of the require

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Gitahi, Joseph, and Michael Hahn. "High-resolution urban air quality monitoring using sentinel satellite images and low-cost ground-based sensor networks." E3S Web of Conferences 171 (2020): 02002. http://dx.doi.org/10.1051/e3sconf/202017102002.

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Satellite remote sensing aerosol monitoring products are readily available but limited to regional and global scales due to low spatial resolutions making them unsuitable for city-level monitoring. Freely available satellite images such as Sentinel -2 at relatively high spatial (10m) and temporal (5 days) resolutions offer the chance to map aerosol distribution at local scales. In the first stage of this study, we retrieve Aerosol Optical Depth (AOD) from Sentinel -2 imagery for the Munich region and assess the accuracy against ground AOD measurements obtained from two Aerosol Robotic Network

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Hemanthkumar, P., Y. Sai Kiran, and V. Nava Teja. "VLSI Design and Comparison of DA and LMS Based Reconfigurable FIR Filter." International Journal of Reconfigurable and Embedded Systems (IJRES) 5, no. 2 (2016): 124. http://dx.doi.org/10.11591/ijres.v5.i2.pp124-130.

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<p>Here, we exhibit the design optimization of one- and two-dimensional fully-pipelined computing structures for area-delay-power-efficient implementation of finite impulse response (FIR) filter by systolic decomposition of distributed arithmetic (DA)-based inner-product computation. This plan is found to offer a flexible choice of the address length of the look-up-tables (LUT) for DA-based computation to determine suitable area-time trade-off. It is seen that by using smaller address-lengths for DA-based computing units, it is possible to decrease the memory-size but on the other side t

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Jiexian, Huang, Yasir Khizar, Zain Anwar Ali, Raza Hasan, and Muhammad Salman Pathan. "On the dynamic reconfigurable implementations of MISTY1 and KASUMI block ciphers." PLOS ONE 18, no. 9 (2023): e0291429. http://dx.doi.org/10.1371/journal.pone.0291429.

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Novel hardware architectures for dynamic reconfigurable implementation of 64-bit MISTY1 and KASUMI block ciphers are proposed to enhance the performance of cryptographic chips for secure IoT applications. The SRL32 primitive (Reconfigurable Look up Tables—RLUTs) and DPR (Dynamic Partial Reconfiguration) are employed to reconfigure single round MISTY1 / KASUMI algorithms on the run-time. The RLUT based architecture attains dynamic logic functionality without extra hardware resources by internally modifying the LUT contents. The proposed adaptive reconfiguration can be adopted as a productive co

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Pandey, Sandeep Kumar, and Geetika Srivastava. "Comparative Study of Hardware Footprints of Neural Network Activation Functions for EMG Based Diabetic Sensorimotor Polyneuropathy Severity Classifier." Biomedical and Pharmacology Journal 18, December Spl Edition (2025): 229–43. https://doi.org/10.13005/bpj/3084.

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Diabetic Sensorimotor Polyneuropathy (DSPN) is a common complication of diabetes, significantly increasing the risk of diabetic foot ulcers and potential amputations. Timely monitoring and early detection of DSPN severity are crucial for prevention. Recent advancements in Machine Learning (ML) have led to highly accurate diagnostic models in the medical field and with the advancements in emerging edge devices these models offer patient-friendly solutions for continuous monitoring. Developing edge-compatible devices necessitates less complex ML models to optimize power consumption, resources, a

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Miraglio, Thomas, Karine Adeline, Margarita Huesca, Susan Ustin, and Xavier Briottet. "Joint Use of PROSAIL and DART for Fast LUT Building: Application to Gap Fraction and Leaf Biochemistry Estimations over Sparse Oak Stands." Remote Sensing 12, no. 18 (2020): 2925. http://dx.doi.org/10.3390/rs12182925.

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Gap Fraction, leaf pigment contents (content of chlorophylls a and b (Cab) and carotenoids content (Car)), Leaf Mass per Area (LMA), and Equivalent Water Thickness (EWT) are considered relevant indicators of forests’ health status, influencing many biological and physical processes. Various methods exist to estimate these variables, often relying on the extensive use of Radiation Transfer Models (RTMs). While 3D RTMs are more realistic to model open canopies, their complexity leads to important computation times that limit the number of simulations that can be considered; 1D RTMs, although les

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Wang, Shuntian, Cheng Liu, Wenqiang Zhang, et al. "Development and Application of HECORA Cloud Retrieval Algorithm Based On the O2-O2 477 nm Absorption Band." Remote Sensing 12, no. 18 (2020): 3039. http://dx.doi.org/10.3390/rs12183039.

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In this paper, we present the Hefei EMI Cloud Retrieval Algorithm (HECORA), which uses information from the O2-O2 absorption band around 477 nm to retrieve effective cloud fraction and effective cloud pressure from satellite observations. The retrieved cloud information intends to improve the atmospheric trace gas products based on the Environment Monitoring Instrument (EMI) spectrometer. The HECORA method builds on OMCLDO2 and presents some evolutions. The Vector Linearized Discrete Ordinate Radiative Transfer (VLIDORT) model has been used to produce the Top of the Atmosphere (TOA) reflectanc

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Liu, Xinjie, Jian Guo, Jiaochan Hu, and Liangyun Liu. "Atmospheric Correction for Tower-Based Solar-Induced Chlorophyll Fluorescence Observations at O2-A Band." Remote Sensing 11, no. 3 (2019): 355. http://dx.doi.org/10.3390/rs11030355.

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Solar-induced chlorophyll fluorescence (SIF) has been proven to be an efficient indicator of vegetation photosynthesis. To investigate the relationship between SIF and Gross Primary Productivity (GPP), tower-based continuous spectral observations coordinated with eddy covariance (EC) measurements are needed. As the strong absorption effect at the O2-A absorption bands has an obvious influence on SIF retrieval based on the Fraunhofer Line Discrimination (FLD) principle, atmospheric correction is required even for tower-based SIF observations made with a sensor tens of meters above the canopy. I

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Katsev, I. L., A. S. Prikhach, E. P. Zege, J. O. Grudo, and A. A. Kokhanovsky. "Speeding up the aerosol optical thickness retrieval using analytical solutions of radiative transfer theory." Atmospheric Measurement Techniques 3, no. 5 (2010): 1403–22. http://dx.doi.org/10.5194/amt-3-1403-2010.

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Abstract. We present here the aerosol retrieval technique FAR that uses radiative transfer computations in the process of retrieval rather than look-up tables (LUT). This approach provides operational satellite data processing due to the use of the accurate and extremely fast radiative transfer code RAY previously developed by authors along with approximate analytical solutions of the radiative transfer theory. The model of the stratified atmosphere is taken as two coupled layers. Both layers include aerosol scattering and absorption, molecular scattering and gas absorption. The atmosphere par

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Bamberger, I., L. Hörtnagl, M. Walser, A. Hansel, and G. Wohlfahrt. "Gap-filling strategies for annual VOC flux data sets." Biogeosciences 11, no. 8 (2014): 2429–42. http://dx.doi.org/10.5194/bg-11-2429-2014.

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Abstract. Up to now the limited knowledge about the exchange of volatile organic compounds (VOCs) between the biosphere and the atmosphere is one of the factors which hinders more accurate climate predictions. Complete long-term flux data sets of several VOCs to quantify the annual exchange and validate recent VOC models are basically not available. In combination with long-term VOC flux measurements the application of gap-filling routines is inevitable in order to replace missing data and make an important step towards a better understanding of the VOC ecosystem–atmosphere exchange on longer

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Bamberger, I., L. Hörtnagl, M. Walser, A. Hansel, and G. Wohlfahrt. "Gap-filling strategies for annual VOC flux data sets." Biogeosciences Discussions 10, no. 11 (2013): 17785–818. http://dx.doi.org/10.5194/bgd-10-17785-2013.

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Abstract. Up to now the limited knowledge about the exchange of volatile organic compounds (VOCs) between the biosphere and the atmosphere is one of the factors which hinders more accurate climate predictions. Complete long-term flux data sets of several VOCs to quantify the annual exchange and validate recent VOC models are basically not available. In combination with long-term VOC flux measurements the application of gap-filling routines is inevitable in order to replace missing data and make an important step towards a better understanding of the VOC ecosystem-atmosphere exchange on longer

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An, Hyogeun, Sudong Kang, Guard Kanda, and Kwangki Ryoo. "RISC-V Hardware Synthesizable Processor Design Test and Verification Using User-Friendly Desktop Application." Webology 19, no. 1 (2022): 4597–620. http://dx.doi.org/10.14704/web/v19i1/web19305.

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Although the RISC-V ISA has not been around for long, it is a processor architecture that has been highlighted by many businesses and individuals for its low-cost and rapid pace of development. They are open-source-synthesizable hardware processors with minimal functionality that is ideal for current IoT applications involving simple sensors and actuator controls. Due to some qualities of hardware, they can operate in areas where software programs and applications cannot be used whereas, these software programs that run on such hardware equally help in understanding how hardware operates. This

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