Articles

Access the latest knowledge in applied science, electrical engineering, computer science and information technology, education, and health.

Advanced Search
Filter Icon

Filters article

Years

FAQ Arrow
Single Year
Range Year
0
0

Source Title

FAQ Arrow

Authors

FAQ Arrow

28,451 Article Results

Pilot-aided Joint Channel Estimation for OFDM Based Cooperative Multi-cell Networks

10.11591/ijeecs.v12.i9.pp6860-6867
Yuan Wang , Zhongpei Zhang , Yixian Chen
Multi-cell joint channel estimation (JCE) is the basis for application of multi-cell cooperative processing. For weakness of the existing algorithms that power delay profile (PDP) knowledge of all multiple cells need be known or pilot sequence sets of all cells must be identical, in this paper, a pilot-aided time domain JCE algorithm is presented. And then, by using Generalized Akaike Information Criterion (GAIC) to estimate PDPs of all cells for reducing the signal space of channel estimation, the paper further optimizes this JCE algorithm. Simulation results show that the proposed algorithms have good mean square error (MSE) and corresponding space frequency block coded (SFBC) cooperative multi-cell transmission system has the good bit error rate (BER) performance too.
Volume: 12
Issue: 9
Page: 6860-6867
Publish at: 2014-09-01

Design Concept of Dynamic-Adaptive Reconfigurable Wireless Sensor Node (DARWiSeN)

10.12928/telkomnika.v12i3.98
C. Bambang Dwi; Bandung State Polytechnic Kuncoro , M. Anda; Bandung State Polytechnic Falahuddin
This paper describe the proposed design concept of wireless sensor node named Dynamic-Adaptive Reconfigurable Wireless Sensor Node (DARWiSeN), with special emphasis on the design principles and functionality. The design concept is targeted to a wireless sensor node prototype that has ability to adapt various applications and situation with a minimal redesign effort through concept of reconfigurable hardware and modularity approach. Both the hardware and software components are detailed, together with experimental evaluation. The experimental evaluation revealed that this approach is not only capable to show rapid prototype of wireless sensor application design, but it can also be used as a generic wireless node platform design in dynamic-adaptive reconfigurable feature, flexible, and greatly extending its applicability.
Volume: 12
Issue: 3
Page: 695-702
Publish at: 2014-09-01

A Robust k-Means Type Algorithm for Soft Subspace Clustering and Its Application to Text Clustering

10.11591/ijeecs.v12.i9.pp6993-6998
Tiantian Yang , Jun Wang
Soft subspace clustering are effective clustering techniques for high dimensional datasets. In this work, a novel soft subspace clustering algorithm RSSKM are proposed. It is based on the incorporation of the alternative distance metric into the framework of k-means type algorithm for soft subspace clustering and can automatically calculates the feature weights of each cluster in the clustering process. The properties of RSSKM are also investigated. Experiments on real world text datasets are conducted and the results show that RSSKM outperformed some popular clustering algorithms for text mining, while still maintaining efficiency of the k-means clustering process.
Volume: 12
Issue: 9
Page: 6993-6998
Publish at: 2014-09-01

Strain Transfer and Test Research of Stick-up Fiber Bragg Grating Sensors

10.12928/telkomnika.v12i3.107
Wang; Huaihai Institute of Technology Bing , Wang; Huaihai Institute of Technology Xiaoli
Because of the flaws of fiber Bragg grating, needs to set up protective layer between the structure and fiber layer to protect the fiber grating. Firstly the strain transferring rules of the FBG sensors is analyzed, carefully analyze the main factors influencing the fiber Bragg grating strain sensor transfer, and analyze concretely effect of each factor, the fiber Bragg grating sensors embedded angle deviation is analyzed and influence on the measured results. Finally, by a series of repeated, coherent, dynamic and fatigue characteristic test, it is proved that the FBG sensor has applied value
Volume: 12
Issue: 3
Page: 589-596
Publish at: 2014-09-01

The Research on Control Method of Variable Speed System of Permanent Magnet Synchronous Motor

10.11591/ijeecs.v12.i9.pp6573-6578
Li Qian-Yu , Zhang Rui-Ping , Xiong Jian
In order to solve the problem that the traditional PI controller can not meet the high performance speed control requirement of permanent magnet synchronous motor, the fuzzy control theory is applied to the speed loop of speed control system of permanent magnet synchronous motor, and realized the parameters tuning in real time of PI controller. Finally, by means of the simulation experiment, the solution verified the new fuzzy PI control system has good robustness to the system load and disturbance.
Volume: 12
Issue: 9
Page: 6573-6578
Publish at: 2014-09-01

Multi Population Evolutionary Programming Approach for Distributed Generation Installation

10.12928/telkomnika.v12i3.77
M.F.; Universiti Teknikal Malaysia Melaka Baharom , M.H.; Universiti Teknikal Malaysia Melaka Jali , M.; Universiti Teknikal Malaysia Melaka Fani , W.M.; Universiti Teknikal Malaysia Melaka Bukhari , Z.H.; Universiti Teknikal Malaysia Melaka Bohari , M.N M.; Universiti Teknikal Malaysia Nasir , N.; Jurutera Perunding Zaaba, JPZ Adnan
This paper describes the impact of the distribution development in order to identify optimum location and sizing for distribution generation (DG) in power system network. Highly demand on the load will lead to in control power distributed by introducing power losses via transmitting the power. Therefore, small-scale electricity generation is required to ensure the large power generated can be used for particular location to minimize losses. In addition, the implementation of distribution generation will slightly reduce the capital cost compared to existing power plant due to space, speed and source required. Thus, proper DG location will significantly enhance the impact on the power flow analysis by considering the source of energy easily obtained. This study will be conducted by using Matlab and the proposed algorithm (MPEP)will be applied on IEEE 30 buses radial distribution system network. As results, the DG is located at optimal locations and sizes rely on the losses consume in various type of DGs technology system used in the network. On the others hand, the condition and location DG itself will generate the optimal power contribution depends on the design strategies that have been implemented.
Volume: 12
Issue: 3
Page: 541-548
Publish at: 2014-09-01

Maximization Network Throughput based on Maximal Flow for Single-Source Two-Destinations Multicast

10.12928/telkomnika.v12i3.102
Huanlin; Chongiqng University of Posts and Telecommunications Liu , Ruiyan; Chongiqng University of Posts and Telecommunications Li , Liang; Chongiqng University of Posts and Telecommunications Qin , Sheng; Chongiqng University of Posts and Telecommunications Huang
For guaranteeing all multicast destination nodes receiving the source information with their maximal flow respectively and obtaining the network maximal throughput, a heuristic algorithm based on network coding, Maximal Flow for Single-source Two-destinations Multicast (MFSTM) is proposed to maximize the network throughput. By calculating the each destination’s maximal flow, the number of link-disjoint paths which equals to destination’s maximal flow, are searched for each destination to construct the network coding graph. A heuristic algorithm based on network coding is designed to delete the redundant link in the network coding graph and guarantee the network throughput maximization. Comparing the traditional maximal multicast stream algorithm based on network coding, the simulation results show that the MFSTM algorithm makes two destinations receive the information at the speed of their maximal flow respectively, and decode the source node information at each destination node successfully.
Volume: 12
Issue: 3
Page: 725-732
Publish at: 2014-09-01

Position Synchronization of Electronic Virtual Line Shafting With Sliding Mode Variable Structure Control

10.11591/ijeecs.v12.i9.pp6612-6621
Changfan Zhang , Xiao Yuanyuan , Wen Long , He Jing
The degree of precision for positioning of adjustable rollers during pre-registering stage has direct influences on register precision of the entire printing. The paper puts forward control strategy of sliding mode variable structure-based electronic virtual line shafting based on the influences of low-speed pre-register process of shaft-less drive printing press on register precision and the influences of nonlinearity and disturbance on synchronous precision of printing process. It also proves the stability of the control algorithm using Lyapunov function. The experimental results demonstrate that the control strategy proposed by this paper can realize synchronous control of shaft-less drive printing press, and also can inhibit effectively the influences on synchronization of system position due to change of parameters and friction during pre-registering stage.
Volume: 12
Issue: 9
Page: 6612-6621
Publish at: 2014-09-01

Research on Iris Recognition Method Based on Quantum Algorithms

10.11591/ijeecs.v12.i9.pp6846-6851
Hui Li , Suyan Zhang , Zhanzhan Zhang
Traditional iris recognition method has low speed and searching rate in large-scale unstructured database. Three different quantum algorithms are proposed in iris recognition. Quantum filtering algorithm can get a better filtering result than classical algorithm in iris filtering process. Quantum Fourier transforms exhibits an exponential speed-up compared with discrete Fourier transform in feature extraction. Improved Grover algorithm can reduce the matching time in the step of iris matching. The experiment results show that matching numbers and matching time reduce greatly.
Volume: 12
Issue: 9
Page: 6846-6851
Publish at: 2014-09-01

Fuzzy PID Speed Control of Two Phase Ultrasonic Motor

10.11591/ijeecs.v12.i9.pp6560-6565
Ma Qiujie , Shi Jingzhuo
Because of ultrasonicmotor’s time-variable nonlinearity, a online adaptive correction of PID controlparameters based on fuzzy logic is presented. The special nature of ultrasonicmotor’s speed control are fully taken into account in designing fuzzy rules.The amplitude of driving voltage is used as the control parameter to realizethe control method. The experiments indicate that the control characteristicsare much better than that of PID controller.
Volume: 12
Issue: 9
Page: 6560-6565
Publish at: 2014-09-01

Wireless Power Transfer by Using Solar Energy

10.12928/telkomnika.v12i3.93
M.; Universiti Malaysia Perlis Fareq , M.; Universiti Malaysia Perlis Fitra , M.; Universiti Malaysia Perlis Irwanto , Syafruddin; Universiti Malaysia Perlis HS , N.; Universiti Malaysia Perlis Gomesh , M.; Universiti Malaysia Perlis Rozailan , M.; Universiti Malaysia Perlis Arinal , Y.M.; Universiti Malaysia Perlis Irwan , J.; Universiti Malaysia Perlis Zarinatul
This project is based on how to transmit electrical power without wires, using solar energy as source. The power is transferred wirelessly through an inductive coupling method. With this new discovery, we no longer need complicated with the cable passing around us, with Power without Wires (Wireless Electricity) we can use our electronic equipment such as TV, MP3 Player, HiFi Headset; everything works without the use of batteries or electrical wiring. In fact, mobile devices such as laptop batteries, mobile phone, or digital camera filled automatically, so once you enter the house, of course without having to plug in the cable. The project is offer to study and fabricate wireless power transfer by using inductive coupling. Experiments have been conducted and the wireless power transfer using inductive coupling can be transfer energy up to 10 cm.
Volume: 12
Issue: 3
Page: 519-524
Publish at: 2014-09-01

Application of adaptive predictive Deconvolution in Marine Seismic Data

10.11591/ijeecs.v12.i9.pp6827-6832
Si-xin Zhu , Bin Wang
Aiming at reverberation and interlayer multiple short period common multiples, with predictive deconvolution multiple attenuation methods exist this problem several residues, through the design of adaptive filter, iterative formula of least mean square algorithm to update the adaptive predictor of key parameters of deconvolution, predictive step and factor by multiple wave length distribution period and different to automatically set the range. Through the model experiment, the method of reverberation, interlayer multiples were especially obvious effect data, and verified by practical data analysis maps, some key results contrast income, show that the method has a good application prospect.
Volume: 12
Issue: 9
Page: 6827-6832
Publish at: 2014-09-01

Tissue Flow Detection Using Fuzzy Logic Method in Color Flow Imaging

10.11591/ijeecs.v12.i9.pp6840-6845
Xiaoming Zhou , Wen Liu
Tissue/flow detection is critical for high quality 2-D color flow image. The traditional tissue/flow detection method is based on one or several thresholds which are used for parameters after autocorrelation. Generally a lot of parameters: flow magnitude, variance and velocity are applied for tissue/flow detection. But this method may not distinguish tissue/flow because of moving tissue or noise. So in this paper, fuzzy logic method with multi-level range based on in vivo carotid I/Q data was proposed with three parameters: echo amplitude, flow magnitude and Flow variance for tissue/flow detection and then decision look-up-table (LUT) was designed for real time display. Experiment results shows that fuzzy logic method was improved for tissue flow detection significantly and can get high quality 2-D color flow image.
Volume: 12
Issue: 9
Page: 6840-6845
Publish at: 2014-09-01

Combine Target Extraction and Enhancement Methods to Fuse Infrared and LLL Images

10.12928/telkomnika.v12i3.81
Yong; Chongqing University of Posts and Telecommunications Chen , Xiong; Chongqing University of Posts and Telecommunications Jie , Huan-lin; Key Laboratory of Optical Fiber Communication Technology Liu , Qiang; Chongqing University of Posts and Telecommunications Fan
For getting the useful object information from infrared image and mining more detail of low light level (LLL) image, we propose a new fusion method based on segmentation and enhancement methods in the paper. First, using 2D maximum entropy method to segment the original infrared image for extracting infrared target, enhancing original LLL image by Zadeh transform for mining more detail information, on the basis of the segmented map to fuse the enhanced LLL image and original infrared image. Then, original infrared image, the enhanced LLL image and the first fused image are used to realize fusion in non-subsampled contourlet transform (NSCT) domain, we get the second fused image. By contrast of experiments, the fused image of the second fused method’s visual effect is better than other methods’ from the literature. Finally, Objective evaluation is used to evaluate the fused images’ quality, its results also show that the proposed method can pop target information, improve fused image’s resolution and contrast.
Volume: 12
Issue: 3
Page: 605-612
Publish at: 2014-09-01

STATCOM Model for Integration of Wind Turbine to Grid

10.11591/ijeecs.v12.i9.pp6519-6525
Rajib Baran Roy , Md. Rokonuzzaman
In order to reduce the green house gas emission and dependency on conventional energy sources, the utilization of renewable energy sources for electricity generation is increasing day by day. The performance of the wind turbine as well as the power quality is determined according to the guidelines and regulations of IEC-61400 (International Electro-technical Commission) standard. When wind turbine is connected to a grid system, the power quality measurements like active power, reactive power, frequency, voltage sag, voltage swell, flicker and harmonics are needed to be considered. In this paper, a STATCOM (static compensator) model is proposed for improving the power quality in case of feeding electricity generated from the wind turbine into the grid.The proposed STATCOM control scheme for improving the wind power quality is designed and simulated by using Simpower toolbox of MATLAB Simulink. According to the simulated results, the bus voltage is improved after adding STATCOM in the simulated model which justifies the feasibility and practicability of the proposed FACTS (Flexible AC transmission system) device.
Volume: 12
Issue: 9
Page: 6519-6525
Publish at: 2014-09-01
1 2 3
...
1896 1897
Show 1680 of 1897

Discover Our Library

Embark on a journey through our expansive collection of articles and let curiosity lead your path to innovation.

Explore Now
Library 3D Ilustration