Performance of Digital Drone Signage System Based on DUET

In this letter, we study a scenario based on degenerate unmixing estimation technique (DUET) that separates original signals from mixture of FHSS signals with two antennas. We have shown that the assumptions for separating mixed signals in DUET can be applied to drone based digital signage recognition signals and proposed the DUET-based separation scheme (DBSS) to classify the mixed recognition drone signals by extracting the delay and attenuation components of the mixture signal through the likelihood function and the short-term Fourier transform (STFT). In addition, we propose an iterative algorithm for signal separation with the conventional DUET scheme. Numerical results showed that the proposed algorithm is more separation-efficient compared to baseline schemes. DBSS can separate all signals within about 0.56 seconds when there are fewer than nine signage signals.

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Analysis of an adaptive short-time Fourier transform-based multicomponent signal separation method derived from linear chirp local approximation

Journal of Computational and Applied Mathematics ◽

10.1016/j.cam.2021.113607 ◽

2021 ◽

pp. 113607

Author(s):

Charles K. Chui ◽

Qingtang Jiang ◽

Lin Li ◽

Jian Lu

Keyword(s):

Fourier Transform ◽

Local Approximation ◽

Separation Method ◽

Signal Separation ◽

Short Time Fourier Transform ◽

Multicomponent Signal ◽

Linear Chirp ◽

Short Time

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Application of least absolute value parameter estimation technique based on linear programming to short-term load forecasting

Proceedings of 1996 Canadian Conference on Electrical and Computer Engineering ◽

10.1109/ccece.1996.548207 ◽

2002 ◽

Cited By ~ 3

Author(s):

S.A. Soliman ◽

S. Persaud ◽

K. El-Nagar ◽

M.E. El-Hawary

Keyword(s):

Linear Programming ◽

Parameter Estimation ◽

Load Forecasting ◽

Estimation Technique ◽

Short Term ◽

Absolute Value ◽

Least Absolute Value ◽

Short Term Load Forecasting

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Solution of Navier’s Equation in Cylindrical Curvilinear Coordinates

Journal of Applied Mechanics ◽

10.1115/1.3424424 ◽

1978 ◽

Vol 45 (4) ◽

pp. 812-816 ◽

Cited By ~ 1

Author(s):

B. S. Berger ◽

B. Alabi

Keyword(s):

Fourier Transform ◽

Finite Difference ◽

Boundary Conditions ◽

Half Space ◽

Coordinate Transformation ◽

Numerical Results ◽

Three Dimensions ◽

Curvilinear Coordinates ◽

Rectangular Region

A solution has been derived for the Navier equations in orthogonal cylindrical curvilinear coordinates in which the axial variable, X3, is suppressed through a Fourier transform. The necessary coordinate transformation may be found either analytically or numerically for given geometries. The finite-difference forms of the mapped Navier equations and boundary conditions are solved in a rectangular region in the curvilinear coordinaties. Numerical results are given for the half space with various surface shapes and boundary conditions in two and three dimensions.

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Adaptive passive, semiactive, smart tuned mass dampers: identification and control using empirical mode decomposition, hilbert transform, and short-term fourier transform

Structural Control and Health Monitoring ◽

10.1002/stc.349 ◽

2009 ◽

Vol 16 (7-8) ◽

pp. 800-841 ◽

Cited By ~ 126

Author(s):

S. Nagarajaiah

Keyword(s):

Fourier Transform ◽

Empirical Mode Decomposition ◽

Hilbert Transform ◽

Short Term ◽

Tuned Mass Dampers ◽

Mode Decomposition ◽

And Control

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An Efficient Iterative Algorithm for Accurately Calculating Impulse Response Functions in Modal Testing

Journal of Vibration and Acoustics ◽

10.1115/1.4005221 ◽

2011 ◽

Vol 133 (6) ◽

Cited By ~ 5

Author(s):

J. M. Liu ◽

W. D. Zhu ◽

Q. H. Lu ◽

G. X. Ren

Keyword(s):

Fourier Transform ◽

Fast Fourier Transform ◽

Iterative Algorithm ◽

Impulse Response ◽

Mimo Systems ◽

Spectral Lines ◽

Modal Testing ◽

Impulse Response Functions ◽

Response Functions ◽

Modal Parameter

Impulse response functions (IRFs) and frequency response functions (FRFs) are bases for modal parameter identification of single-input, single-output (SISO) and multiple-input, multiple-out (MIMO) systems, and the two functions can be transformed from each other using the fast Fourier transform and the inverse fast Fourier transform. An efficient iterative algorithm is developed in this work to directly and accurately calculate the IRFs of SISO and MIMO systems in the time domain using relatively short input and output data series. The iterative algorithm can avoid the time-consuming inversion of a large matrix in the conventional least-square method for calculating an IRF, greatly reducing the computation time. In addition, a fitting index and an error energy decreasing coefficient are introduced to evaluate the accuracy in calculating an IRF and to provide the termination criterion for the iterative algorithm. A new coherence function is also introduced to evaluate the accuracy of calculated IRFs and FRFs at different spectral lines. Two examples are given to illustrate the effectiveness and efficiency of the methodology.

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Local Area Network (LAN)-Based Digital Signage Solution Using Raspberry Pi

International Journal of People-Oriented Programming ◽

10.4018/ijpop.2017070102 ◽

2017 ◽

Vol 6 (2) ◽

pp. 20-32

Author(s):

MengMeng Zhao

Keyword(s):

High School Students ◽

Local Area Network ◽

Community Setting ◽

Local Area ◽

Raspberry Pi ◽

Area Network ◽

School Students ◽

Digital Signage ◽

Signage System

This article outlines a case study in which the author employs a Raspberry Pi 3 miniature computer as a Digital Signage System, which can be managed from either laptop, smartphone or desktop computers. The author presents it as a case study that high school students (and their teachers) can follow, as a collaborative project that delivers a cost effective and flexible, digital signage system for their school. While it does not require any coding on their part, it presents an excellent use of ICT, by configuring multiple interrelated hardware and open software, in a school community setting, that would fit in with many contemporary digital technology curriculums.

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All-optical Mach-Zehnder interferometer wavelength converters and switches with integrated data- and control-signal separation scheme

Journal of Lightwave Technology ◽

10.1109/50.769308 ◽

1999 ◽

Vol 17 (6) ◽

pp. 1056-1066 ◽

Cited By ~ 37

Author(s):

J. Leuthold ◽

P.-A. Besse ◽

E. Gamper ◽

M. Dulk ◽

S. Fischer ◽

...

Keyword(s):

Control Signal ◽

Zehnder Interferometer ◽

Signal Separation ◽

Wavelength Converters ◽

Separation Scheme ◽

All Optical ◽

And Control ◽

Mach Zehnder Interferometer

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Long Short-Term Memory Autoencoder Neural Networks Based DC Pulsed Load Monitoring Using Short-Time Fourier Transform Feature Extraction

2020 IEEE 29th International Symposium on Industrial Electronics (ISIE) ◽

10.1109/isie45063.2020.9152477 ◽

2020 ◽

Author(s):

Yue Ma ◽

Atif Maqsood ◽

Keith Corzine ◽

Damian Oslebo

Keyword(s):

Neural Networks ◽

Feature Extraction ◽

Fourier Transform ◽

Short Term Memory ◽

Short Time Fourier Transform ◽

Short Term ◽

Term Memory ◽

Load Monitoring ◽

Long Short Term Memory ◽

Short Time

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Development of a Digital Signage System for Automatic Collection and Distribution of Its Content from the Existing Digital Contents and Its Field Trials

2011 IEEE/IPSJ International Symposium on Applications and the Internet ◽

10.1109/saint.2011.86 ◽

2011 ◽

Author(s):

Hiroyuki Inoue ◽

Kaoru Suzuki ◽

Koji Sakata ◽

Kaori Maeda

Keyword(s):

Field Trials ◽

Digital Signage ◽

Digital Contents ◽

Signage System ◽

Automatic Collection

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Robust Thermal Management for Embedded CPU and GPUs in Displays

ASME 2011 Pacific Rim Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Systems, MEMS and NEMS: Volume 2 ◽

10.1115/ipack2011-52014 ◽

2011 ◽

Author(s):

Sung Ki Kim ◽

Woo Young Kan ◽

Sang Hak Kim ◽

Vincent Tan ◽

Gamal Refai-Ahmed ◽

...

Keyword(s):

Thermal Management ◽

Heat Dissipation ◽

Form Factors ◽

Thermal Design ◽

Flat Panel Display ◽

Large Format ◽

Digital Signage ◽

Operation Conditions ◽

Signage System ◽

Embedded Computing System

Digital signage systems are large format displays that are typically installed in public areas for advertisement and informative publications. This emerging technology is considered as a major category in the large format display market. In general, a digital signage system consists of a flat panel display consisting of high brightness screen and operation circuits. Also, special features of high performance embedded computing system exist in very small form factors. Such products, however, are accompanied with high heat dissipation of the internal components and are usually exposed to very harsh environments for more frequent exposure to customers. Also the installation schemes of the products vary for different objectives, and a robust thermal design is required to guarantee the system reliability considering corner scenarios within the design space. The objective of the present study is to investigate the effect of installation environment on the thermal performance of a display assembly resembling a digital signage system. Design criteria for a proper thermal management scheme are proposed. The thermal characteristics of a digital signage system are presented in various operation conditions and each thermal design parameter is discussed thoroughly to ensure the reliability requirements of the digital signage system are met.

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