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Proceedings of the 44th IEEE 2001 Midwest Symposium on Circuits and Systems. MWSCAS 2001 (Cat. No.01CH37257)最新文献

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An analog implementation of radial basis neural networks (RBNN) using BiCMOS technology 利用BiCMOS技术模拟实现径向基神经网络(RBNN)
Proceedings of the 44th IEEE 2001 Midwest Symposium on Circuits and Systems. MWSCAS 2001 (Cat. No.01CH37257) Pub Date : 2001-12-01 DOI: 10.1109/MWSCAS.2001.986285
J.P. de Oliveira, N. Oki
{"title":"An analog implementation of radial basis neural networks (RBNN) using BiCMOS technology","authors":"J.P. de Oliveira, N. Oki","doi":"10.1109/MWSCAS.2001.986285","DOIUrl":"https://doi.org/10.1109/MWSCAS.2001.986285","url":null,"abstract":"This paper describes an analog implementation of radial basis neural networks (RBNN) in BiCMOS technology. The RBNN uses a Gaussian function obtained through the characteristic of the bipolar differential pair. The Gaussian parameters (gain, center and width) are changed with a programmable current source. Results obtained with PSPICE software are shown.","PeriodicalId":403026,"journal":{"name":"Proceedings of the 44th IEEE 2001 Midwest Symposium on Circuits and Systems. MWSCAS 2001 (Cat. No.01CH37257)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114269626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Frequency analysis of voltage amplifier using inductive-CCII based opamps 基于电感ccii的运放大器的电压放大器频率分析
Proceedings of the 44th IEEE 2001 Midwest Symposium on Circuits and Systems. MWSCAS 2001 (Cat. No.01CH37257) Pub Date : 2001-08-14 DOI: 10.1109/MWSCAS.2001.986172
H. Barthélemy
{"title":"Frequency analysis of voltage amplifier using inductive-CCII based opamps","authors":"H. Barthélemy","doi":"10.1109/MWSCAS.2001.986172","DOIUrl":"https://doi.org/10.1109/MWSCAS.2001.986172","url":null,"abstract":"In this paper, a frequency analysis of a voltage feedback amplifier based on second generation current conveyors with inductive input/output impedance, is presented. The traditional voltage amplifier configured from voltage and current feedback operational amplifiers are studies and compared. PSPICE simulation confirms the theoretical approach.","PeriodicalId":403026,"journal":{"name":"Proceedings of the 44th IEEE 2001 Midwest Symposium on Circuits and Systems. MWSCAS 2001 (Cat. No.01CH37257)","volume":"141 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115150922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Matrix-oriented methods for searching the topological conditions for the analysis of nonlinear resistive circuits 面向矩阵的拓扑条件搜索方法用于非线性电阻电路的分析
Proceedings of the 44th IEEE 2001 Midwest Symposium on Circuits and Systems. MWSCAS 2001 (Cat. No.01CH37257) Pub Date : 2001-08-14 DOI: 10.1109/MWSCAS.2001.986106
L. Hernández-Martínez, H. Vázquez-Leal, A. Sarmiento-Reyes
{"title":"Matrix-oriented methods for searching the topological conditions for the analysis of nonlinear resistive circuits","authors":"L. Hernández-Martínez, H. Vázquez-Leal, A. Sarmiento-Reyes","doi":"10.1109/MWSCAS.2001.986106","DOIUrl":"https://doi.org/10.1109/MWSCAS.2001.986106","url":null,"abstract":"The paper presents two methods based on matrix techniques for finding the pair of conjugate trees and the pair of compatible i-v orientations in the circuit topology. The existence of both topological conditions are used to asses the uniqueness of the DC solution. The method resorts to matrix manipulations and it is based on the RE Algorithm (reduction to an Echelon matrix) and on the colored-branch algorithm. The method deals with circuits containing V-resistors, I-resistors, independent current and voltage sources, nullators and norators.","PeriodicalId":403026,"journal":{"name":"Proceedings of the 44th IEEE 2001 Midwest Symposium on Circuits and Systems. MWSCAS 2001 (Cat. No.01CH37257)","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116973765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Integer division for quantization of wavelet-transformed images, using field programmable gate arrays 整数除法量化小波变换图像，使用现场可编程门阵列
Proceedings of the 44th IEEE 2001 Midwest Symposium on Circuits and Systems. MWSCAS 2001 (Cat. No.01CH37257) Pub Date : 2001-08-14 DOI: 10.1109/MWSCAS.2001.986143
W.F. Turri, W. Smari, F.A. Scarpino
{"title":"Integer division for quantization of wavelet-transformed images, using field programmable gate arrays","authors":"W.F. Turri, W. Smari, F.A. Scarpino","doi":"10.1109/MWSCAS.2001.986143","DOIUrl":"https://doi.org/10.1109/MWSCAS.2001.986143","url":null,"abstract":"Integer-based wavelet transforms present advantages in image compression such as computational speed, simplicity, and reconstructed image quality. The nature of wavelet decomposition allows high compression ratios to be achieved through efficient methods of encoding. The work presented here describes an efficient hardware implementation of a simple integer-division algorithm for the quantization of image data using FPGAs. In addition, this paper presents an overview of the use of wavelet analysis and wavelet transforms, specifically the Haar wavelet transform, in real-time image compression.","PeriodicalId":403026,"journal":{"name":"Proceedings of the 44th IEEE 2001 Midwest Symposium on Circuits and Systems. MWSCAS 2001 (Cat. No.01CH37257)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125278588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Design and analysis of swarm-based sensor systems 基于群的传感器系统设计与分析
Proceedings of the 44th IEEE 2001 Midwest Symposium on Circuits and Systems. MWSCAS 2001 (Cat. No.01CH37257) Pub Date : 2001-08-14 DOI: 10.1109/MWSCAS.2001.986217
B. Kadrovach, G. Lamont
{"title":"Design and analysis of swarm-based sensor systems","authors":"B. Kadrovach, G. Lamont","doi":"10.1109/MWSCAS.2001.986217","DOIUrl":"https://doi.org/10.1109/MWSCAS.2001.986217","url":null,"abstract":"Miniaturization of electronics and mechanical elements has resulted in an explosion of small, computationally powerful sensor devices. These devices mounted on multiple mobile platforms - provide information gathering methods in a wide range of environments. Current sensor networks that produce large amounts of information lack an efficient method for returning data to the user. The purpose of this research is to develop and evaluate through simulation a cooperative communications and processing system.","PeriodicalId":403026,"journal":{"name":"Proceedings of the 44th IEEE 2001 Midwest Symposium on Circuits and Systems. MWSCAS 2001 (Cat. No.01CH37257)","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126922837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 22
Wavelet segmentation for fetal ultrasound images 胎儿超声图像的小波分割
Proceedings of the 44th IEEE 2001 Midwest Symposium on Circuits and Systems. MWSCAS 2001 (Cat. No.01CH37257) Pub Date : 2001-08-14 DOI: 10.1109/MWSCAS.2001.986220
Nourhan Zayed, A. Badwi, A. Elsayad, M. Elsherif, A. Youssef
{"title":"Wavelet segmentation for fetal ultrasound images","authors":"Nourhan Zayed, A. Badwi, A. Elsayad, M. Elsherif, A. Youssef","doi":"10.1109/MWSCAS.2001.986220","DOIUrl":"https://doi.org/10.1109/MWSCAS.2001.986220","url":null,"abstract":"This paper introduces an efficient algorithm for segmentation of fetal ultrasound images using the multiresolution analysis technique. The proposed algorithm decomposes the input image into a multiresolution space using the B-spline two-dimensional wavelet transform. The system builds features vector for each pixel that contains information about the gray level, moments and other texture information. These vectors are used as inputs for the fuzzy c-means clustering method, which results in a segmented image whose regions are distinct from each other according to texture characteristic content. An Adaptive Center Weighted Median filter is used to enhance fetal ultrasound images before wavelet decomposition. Experiments indicate that this method can be applied with promising results. Preliminary experiments indicate good results in image segmentation while further studies are needed to investigate the potential of wavelet analysis and fuzzy c-means clustering methods as a tool for detecting fetus organs in digital ultrasound images.","PeriodicalId":403026,"journal":{"name":"Proceedings of the 44th IEEE 2001 Midwest Symposium on Circuits and Systems. MWSCAS 2001 (Cat. No.01CH37257)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115992271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
A method based on wavelet analysis for the detection of ventricular late potentials in ECG signals 基于小波分析的心电信号心室晚电位检测方法
Proceedings of the 44th IEEE 2001 Midwest Symposium on Circuits and Systems. MWSCAS 2001 (Cat. No.01CH37257) Pub Date : 2001-08-14 DOI: 10.1109/MWSCAS.2001.986219
A. Mousa, A. Yilmaz
{"title":"A method based on wavelet analysis for the detection of ventricular late potentials in ECG signals","authors":"A. Mousa, A. Yilmaz","doi":"10.1109/MWSCAS.2001.986219","DOIUrl":"https://doi.org/10.1109/MWSCAS.2001.986219","url":null,"abstract":"After recovery from acute myocardial infarction (MI), a significant number of patients remain at risk of sudden death, which is attributed to ventricular tachycardia (VT). Ventricular Late Potentials (VLPs) are associated with VT. VLPs are low amplitude high frequency signals that appear at the end of the QRS complex of an ECG recording. In this work, DWT analysis is performed to identify VLPs in ECG signals and this analysis is used to classify patients with and without VLPs in their ECGs. Discrete Wavelet Transforms (DWT) was carried out for a total of (39) different ECG records that included MI patients with and without VT. The parameters studied in this work included the standard parameters, which are the duration of the QRS the root mean square of the signal in the last 40 ms and the duration of the low amplitude signal. In addition to the standard parameters, two DWT generated parameters were added which are power of the vector magnitude and norm of a chosen level. Introducing new WT parameters improves performance in comparison with the use of standard method parameters alone.","PeriodicalId":403026,"journal":{"name":"Proceedings of the 44th IEEE 2001 Midwest Symposium on Circuits and Systems. MWSCAS 2001 (Cat. No.01CH37257)","volume":"218 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116865117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
A flexible register access control for programmable protocol processors 可编程协议处理器的一种灵活的寄存器访问控制
Proceedings of the 44th IEEE 2001 Midwest Symposium on Circuits and Systems. MWSCAS 2001 (Cat. No.01CH37257) Pub Date : 2001-08-14 DOI: 10.1109/MWSCAS.2001.986209
Y. Ma, A. Jantsch, H. Tenhunen
{"title":"A flexible register access control for programmable protocol processors","authors":"Y. Ma, A. Jantsch, H. Tenhunen","doi":"10.1109/MWSCAS.2001.986209","DOIUrl":"https://doi.org/10.1109/MWSCAS.2001.986209","url":null,"abstract":"We investigate a programmable processor architecture for internet protocol processing and use IP packet forward as a case study. We focus on flexible register access capability to support packet analysis and encapsulation. Compared to general-purpose superscalar microprocessors, our architecture achieves at least a two-fold improvement in performance.","PeriodicalId":403026,"journal":{"name":"Proceedings of the 44th IEEE 2001 Midwest Symposium on Circuits and Systems. MWSCAS 2001 (Cat. No.01CH37257)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129682874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
CMOS RF mixer no-linearity design CMOS射频混频器非线性设计
Proceedings of the 44th IEEE 2001 Midwest Symposium on Circuits and Systems. MWSCAS 2001 (Cat. No.01CH37257) Pub Date : 2001-08-14 DOI: 10.1109/MWSCAS.2001.986310
Qiang Li, Jinlong Zhang, Wei Li, J. Yuan
{"title":"CMOS RF mixer no-linearity design","authors":"Qiang Li, Jinlong Zhang, Wei Li, J. Yuan","doi":"10.1109/MWSCAS.2001.986310","DOIUrl":"https://doi.org/10.1109/MWSCAS.2001.986310","url":null,"abstract":"Design equations for the 1 dB compression point and 3rd-order intermodulation point as a function of circuit and technology parameters are derived using a Volterra series expansion. Linearity analysis for both single and double-balanced CMOS Gilbert mixers is examined. The transconductance stage using inductive degeneration is more linear than that using capacitive or resistive degeneration, and the single-balanced mixer is more linear than the double-balanced one at the same bias current and transconductance. The analytical predictions are verified with the Cadence SpectreRF circuit simulation and experimental data. Good agreement between the model predictions and experimental data is obtained.","PeriodicalId":403026,"journal":{"name":"Proceedings of the 44th IEEE 2001 Midwest Symposium on Circuits and Systems. MWSCAS 2001 (Cat. No.01CH37257)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130404322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 27
Self synchronization of time delay and integration (TDI) cameras 时间延迟和集成(TDI)摄像机的自同步
Proceedings of the 44th IEEE 2001 Midwest Symposium on Circuits and Systems. MWSCAS 2001 (Cat. No.01CH37257) Pub Date : 2001-08-14 DOI: 10.1109/MWSCAS.2001.986145
I. Cem Baykal, G. Jullien
{"title":"Self synchronization of time delay and integration (TDI) cameras","authors":"I. Cem Baykal, G. Jullien","doi":"10.1109/MWSCAS.2001.986145","DOIUrl":"https://doi.org/10.1109/MWSCAS.2001.986145","url":null,"abstract":"Time Delay Integration (TDI) is a technology used in line-scan cameras to improve moving image quality. As an image sweeps over the sensor array, the pixels collect charge; at certain intervals the charge in the wells in each of the rows is moved to their adjacent rows, in the same direction and velocity as the moving image. TDI sensors help provide high quality and contrast image even under low illumination as long as image speed is same with the speed of the charge movement. TDI is modeled as a natural sampler and based on the properties of this mathematical model, low complexity algorithms that can fit into an FPGA are developed to self synchronize the TDI based on the change in the high frequency components of the output signal.","PeriodicalId":403026,"journal":{"name":"Proceedings of the 44th IEEE 2001 Midwest Symposium on Circuits and Systems. MWSCAS 2001 (Cat. No.01CH37257)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121444309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
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