5G wireless communication system sets a higher requirement on power dissipation of base station power amplifiers. In order to study the working characteristics of power amplifiers, it is essential to build a reasonabl...
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ISBN:
(数字)9781728190044
ISBN:
(纸本)9781728190051
5G wireless communication system sets a higher requirement on power dissipation of base station power amplifiers. In order to study the working characteristics of power amplifiers, it is essential to build a reasonable power amplifier behavior model. To reduce the complexity of power amplifier modeling and solution, this paper designs a greedy algorithm based on Dice criterion. Particle swarm optimization is adopted for optimization. In order to verify the advantages of the algorithm, this paper applies the adaptive sparse algorithm to the simplification of nonlinear memory polynomial power amplifier, and sets different simulation parameters and sparsity for practical testing. The simulation results show that the proposed algorithm can effectively improve the modeling accuracy and the convergence rate of the model coefficients.
Hand gesture is the initial method for communication that was used by cave men. The verbal communication was developed by the more developed civilization. Hand gesture has been the oldest form of non-verbal communicat...
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ISBN:
(数字)9781665461221
ISBN:
(纸本)9781665461238
Hand gesture is the initial method for communication that was used by cave men. The verbal communication was developed by the more developed civilization. Hand gesture has been the oldest form of non-verbal communication. In current time, hand gesture is not only a way of communication between people who may or may not be physically challenged but also between humans and machines in diversified fields such as aviation, surveys, military simulation, medical training etc. It is the best way of interaction between man and machine as no peripheral devices are required and a wide range of gesture can be used for communication with high accuracy. For such human and machine interaction a real-time gesture recognition system is proposed. Detection of motion and skin is used for capturing region-of-interest. The region of interest is further processed by convolutional neural network in order to get a proper result.
Nowadays there are a variety of methods to assist parking users in finding free sites in parking lots. However, there is no automatic system that takes into account the size of the car looking for a space or whether t...
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Water content not only affects the taste and hardness of food, but also affects the shelf life of food, which determines the profit and loss of enterprises to a certain extent. Therefore, in the process of food produc...
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The proceedings contain 80 papers. The topics discussed include: optical sizing of cement particles: shape influence;Fourier analysis of speckle fields;radiation spectrum of system of electrons moving in spiral in med...
ISBN:
(纸本)9781510635104
The proceedings contain 80 papers. The topics discussed include: optical sizing of cement particles: shape influence;Fourier analysis of speckle fields;radiation spectrum of system of electrons moving in spiral in medium;computermodeling and practical realization of chaotic circuit with a light-emitting diode;increase of spatial resolution of the optical spectrum analyzer;monte carlo simulation of magnetic properties of AA and AB stacked nano-graphene bilayer within ising-like model;structured light: peculiar properties and applications;computersimulation of erythrocytes motion in evanescent field;and new approaches in birefringent microplate motion peculiarities modeling.
Image-pyramid generator is an important component for many computer vision applications. Due to the complexity of image scaling operations, embedded application processors usually generate three- or four-level image p...
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ISBN:
(数字)9783030609399
ISBN:
(纸本)9783030609399;9783030609382
Image-pyramid generator is an important component for many computer vision applications. Due to the complexity of image scaling operations, embedded application processors usually generate three- or four-level image pyramids for vision applications. In this paper, we present an image pyramid accelerator for embedded processors that generates image pyramids of up to 24-levels of down-sampled resolutions for the input image. Since image pyramids are crucial for the coarse-to-fine analysis of many computer vision problems, more resolution levels in the image pyramid can improve the parameter-estimation accuracy. Furthermore, the down-sampling filters used in the proposed design is based on a long-tap Sine-windowed Sinc function filter. Therefore, it preserves more image details than other low-complexity filters such as the bilinear or the bicubic interpolation filter. The proposed circuit is verified on an FPGA development board with a Xilinx Kintex-7 device and will be made open-source. The experimental results show that the design is very promising for real-time computer vision applications.
Consistency assessment is an important measure to ensure that distributed modeling and simulation results are correct and credible, and is crucial for maintaining the global consistency of Parallel and Distributed Sim...
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Intelligent adaptive systems generally use inferential or computational methods to identify and adapt to the user’s internal state of interest. Toward an adaptive human-in-the-loop simulation, his article defines, im...
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ISBN:
(数字)9781450394765
Intelligent adaptive systems generally use inferential or computational methods to identify and adapt to the user’s internal state of interest. Toward an adaptive human-in-the-loop simulation, his article defines, implements, and validates an analytic scheme to estimate real-time, task-specific, and comprehensive human performance encompassing perception and action. The proposed scheme builds on the previous work of mixed reality (MR) simulation app designed to perform a virtual object-following task for screening and diagnosis of neurocognitive impairment. The proposed human performance model adopts the Fitts’ paradigm of speed-accuracy tradeoff in the context of continuous, rapid aimed movements. For validation, the performance quantification of eleven healthy subjects over two repeated sessions was statistically analyzed. The results potentially confirm a qualification of the metric in terms of stability (by not showing statistically significant variance over repetition), but for an accurate estimate of individual performance, the scheme needs to be adjusted with its segmentation threshold.
In order to solve the multi-objective task scheduling optimization problem of data platform microservice combination, this paper proposes an improved harmony search algorithm MODRHS, which fuses the multi-objective op...
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In the anti-terrorism and anti-riot missions, there have been many kinds of excessive injury caused by the use of kinetic energy projectiles as a non-lethal weapon, so it is urgent to predict its wounding effect scien...
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