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Digital Signal Processor (DSP) has been well developed which makes digital signal processing technology also develop fast. This paper presents the design and implementation of a leakage point location system for the underground water supply pipelines combined with digital signal processing technology and micro-processing technology. This system, selecting micro control unit (MCU) as the central processing...
In order to solve the parameters' adjusting difficulty of the continuous Duffing chaotic system, a method of using single-chip microcomputer to realize Duffing chaotic system is proposed in this paper. It is proven that the discrete Duffing chaotic system as well as the continuous system has the ability of signal detection. The simulation results based on singlechip microcomputer under MATLAB environment...
Cognitive radio techniques represent an emerging approach for mitigating the spectrum scarcity problem in wireless communications. Cooperative sensing is an effective solution to improve sensing accuracy and robustness in the presence of fading and shadowing that make individual sensing less reliable. However, when an adversary can corrupt some nodes in the network, the effectiveness of cooperative...
Robustness is the key feature for practical visual servoing systems. Uncertainty modeling in these systems is the first step towards accurate and robust visual servoing. Camera displacement error due to image noise has been investigated using the noise boundaries in the previous works. Also error covariance propagation has already been developed to model the uncertainties of different visual servoing...
In this paper, the iterative learning control (ILC) is applied to the networked control system (NCS) with iterative varying references and time-delayed states. A robust PD type ILC learning law is discussed including both feedback and feedforward terms. And a P type reference updating law is applied to improve the convergence speed. The convergence conditions are derived in both frequency and time...
Plane wave propagation is an important field of interest in magnetic theory. In this paper, we propose an adaptive filtering noise canceller that enables us to estimate an incident plane wave from the total plane wave seen in a medium. In order to test the proposed canceller, a comparison between the performances of the least mean square (LMS), recursive least squares (RLS) and recursive inverse (RI)...
In this paper, we present a flexible biphasic pulse generating and accurate charge balancing stimulator with a 1μW neural recording amplifier. To achieve accurate charge balance, the stimulator is implemented using a dynamic current copying technique. It can generate a biphasic current pulse with an anodic scaling feature. To reduce power consumption, the recording amplifier is implemented to operate...
A glia is a nervous cell which is existing in a brain. This cell changes a Ca2+ concentration. This ion affects a neuron membrane potential and it is propagated to the neighboring glia. Moreover, the Ca2; directly affects the human memory by increasing of a D-serine. From these functions, we propose a Multi-Layer Perceptron (MLP) including glial pulse and switching between a learning and non-learning...
Image enlargement is a typical application of image processing. Many algorithms have been proposed and have found successful applications. Most of these algorithms are based on the theory of interpolation and make use of local structure of natural images. In this paper, we propose a new algorithm which is inspired by a new imaging sensor called the giga-vision sensor. In the proposed algorithm, an...
This paper presents a digital calibration technique for a cyclic analog-to-digital converter (cyclic ADC) using MOS capacitors (MOSCAPs) which has a large applied voltage dependency but a high capacitance per area. The cyclic ADC with MOSCAPs has a large integral nonlinearity (INL), while the differential nonlinearity (DNL) is very small. A digital calibration algorithm for reducing the INL is presented...
In this study, we research a new layer arrangement of three layer cellular neural network (CNN). In this paper, we investigate the output characteristics by using our proposed method to image processing of gray scale image and binary image and show its effectiveness with simulation results.
This paper presents a model of direct delta-sigma receiver (DDSR) and methodology for theoretical transfer function (TF). The theoretical analysis is carried out by modeling the key elements of the DDSR, including the N-path filter, down-conversion mixer, baseband delta sigma modulator (DSM) and FIRDACs in order to optimize the loop filter coefficients. The contribution of different noise sources...
Mode Group Diversity Multiplexing (MGDM) is an Optical Multiple-Input-Multiple-Output (O-MIMO) technique that provides larger robustness and capacity for data communication over MultiMode Fiber (MMF). The utility of a MGDM system in terms of capacity expansion gives a major interest in most applications of optical communication. In this paper, we propose a transfer matrix decompositioon of O-MIMO...
Traditional physical layer security methods, such as artificial noise, commonly require that the sender has more antennas than that of the receivers, which is not practical in the multicasting system. To solve this problem, a multicarrier-based physical layer security scheme for the multicast systems is proposed, which takes the advantage of both space and frequency domain to form a relatively virtual...
This paper addresses the problem of generating non-overlapping clock phases for switched capacitor circuits at more than 1 GHz clock frequency. A simple clock phase generator providing two non-overlapping phases with low values of RMS period jitter, RMS jitter of phases' widths and phase shift of 180 degrees is proposed. The circuit relies on a back-to-back inverter structure. Simulation results over...
A ball-on-plate balancing system, the ball and plate, has a camera to catch a ball position and a plate whose angle of inclination is limited. This paper proposes a design method of PID control based on the generalized Kalman-Yakubovich-Popov lemma for the ball and plate. The design method has two features: the first one is that a structure of the controller is called I-PD to suppress a large input...
In this paper, the conventional single-stage latched comparator is improved for both high speed and low noise flash ADCs. In the proposed method for high-speed applications, the common mode level of output voltage is preserved unchanged during both amplification and latch operations, to speed up the comparison of small voltage differences. Also, the amplitude of digital control signals is reduced...
This paper presents the state space modeling approach of DC-DC Buck converter. The main aim of this work is, by considering the buck converter system of Ericsson BMR450 with the PID, Polynomial and PD controllers at feedback loop, thus running a MATLAB file with an appropriate simu-link block diagram, and comparing the three controller's performance by verifying their appropriate output graphs. The...
In this paper, a nonparametric approach for time-of-arrival (TOA) estimation in impulse radio ultra wide band (IR-UWB) signals is proposed. It exploits the idea of nonparametric detection, which is always utilized in radar systems for detecting targets in a background of noise with unknown statistical properties. The proposed nonparametric TOA estimator is obtained by basing a well-known generalized...
An empirical mode decomposition based recurrent Hermite neural network (ERHNN) prediction model is proposed to predict short-term traffic flow in this study. First, a recurrent Hermite neural network (RHNN) prediction model with different orthonormal Hermite polynomial basis functions (OHPBFs) as activation functions is introduced. Then, to further mitigate the influence of noise and improve the accuracy...
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