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The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.最新文献

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Conjugate gradient algorithm for series cascade nonlinear adaptive filters 串级非线性自适应滤波器的共轭梯度算法
The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04. Pub Date : 2004-07-25 DOI: 10.1109/MWSCAS.2004.1354084
C. Radhakrishnan, W. Jenkins, A. Garga
{"title":"Conjugate gradient algorithm for series cascade nonlinear adaptive filters","authors":"C. Radhakrishnan, W. Jenkins, A. Garga","doi":"10.1109/MWSCAS.2004.1354084","DOIUrl":"https://doi.org/10.1109/MWSCAS.2004.1354084","url":null,"abstract":"This paper considers series-cascade nonlinear filter architectures consisting of a linear FIR input filter, a memoryless polynomial nonlinearity, and a linear FIR/IIR output filter (LNL). Earlier publications reported on the development of the LMS and RLS backpropagation algorithms for training this same adaptive filter structure. In this paper the conjugate gradient backpropagation algorithm is derived for the joint adaptation of the LNL structure. An echo cancellation example is considered to study the algorithm in terms of its learning characteristics and computational complexity.","PeriodicalId":185817,"journal":{"name":"The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129099291","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
Real-time position and pose tracking method of moving object using visual servo system 基于视觉伺服系统的运动目标实时位置和姿态跟踪方法
The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04. Pub Date : 2004-07-25 DOI: 10.1109/MWSCAS.2004.1354318
A. Takio, K. Kondo, S. Kobashi, Y. Hata
{"title":"Real-time position and pose tracking method of moving object using visual servo system","authors":"A. Takio, K. Kondo, S. Kobashi, Y. Hata","doi":"10.1109/MWSCAS.2004.1354318","DOIUrl":"https://doi.org/10.1109/MWSCAS.2004.1354318","url":null,"abstract":"This paper proposes a real-time position and pose tracking method of a moving object. The conventional methods need a three-dimensional (3D) model data of the target object. By the proposed method, the 3D position and pose tracking can be achieved without the 3D model data. We set some landmarks to estimate the 3D position and pose of the object by a single camera. In addition, the trajectory of moving landmarks is estimated by a Kalman filter. The experimental results show that a stick with a diameter of 5.0 mm can be inserted in a moving pipe with a diameter of 30.0 mm in real-time.","PeriodicalId":185817,"journal":{"name":"The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130608776","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: 3
Soft and hard biometrics fusion for improved identity verification 软硬生物特征融合，改进身份验证
The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04. Pub Date : 2004-07-25 DOI: 10.1109/MWSCAS.2004.1353967
R. Zewail, A. Elsafi, M. Saeb, N. Hamdy
{"title":"Soft and hard biometrics fusion for improved identity verification","authors":"R. Zewail, A. Elsafi, M. Saeb, N. Hamdy","doi":"10.1109/MWSCAS.2004.1353967","DOIUrl":"https://doi.org/10.1109/MWSCAS.2004.1353967","url":null,"abstract":"Traditional biometric systems that are based on single biometric usually suffer from problems like unacceptable error rates, spoof attacks and insufficient population coverage. To improve system's reliability, two or more biometrics of the same identity could be combined in a manner that enhances the efficiency of the system. Multi-biometric systems integrate typical physiological (fingerprint, iris, face...etc.) and behavioral (e.g. gait, voice, signature...etc.) traits. However, other features like color of skin, color of irises and height can also be included to enhance the overall performance. In this paper, a framework for integrating a soft biometric like the color of a human iris within a multi modal biometric system that combines hard biometrics such as fingerprint and iris texture. Steerable pyramid filters and multi-channel log-Gabor filters are suggested here for extracting proper features of the fingerprints and iris textures respectively. Experimental results, considering two different fusion strategies, have shown a significant improvement in the performance compared to the results of the standalone combined fingerprint and iris matchers.","PeriodicalId":185817,"journal":{"name":"The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123886739","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: 47
A reliable and high voltage compatible CMOS I/O buffer 一个可靠的和高电压兼容CMOS I/O缓冲器
The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04. Pub Date : 2004-07-25 DOI: 10.1109/MWSCAS.2004.1354392
Hwang-Cherng Chow, You-Gang Chen
{"title":"A reliable and high voltage compatible CMOS I/O buffer","authors":"Hwang-Cherng Chow, You-Gang Chen","doi":"10.1109/MWSCAS.2004.1354392","DOIUrl":"https://doi.org/10.1109/MWSCAS.2004.1354392","url":null,"abstract":"A high voltage tolerant and reliable CMOS I/O buffer without using thick-oxide devices is presented. By the floating n-well technique, the proposed design has a simpler structure and the good gate-oxide reliability is achieved. In addition, it is dc leakage free and has no redundant pad for dual powers. From the simulation results, the proposed circuit can demonstrate both speed enhancement about 20% in pull-up operation and 50% saving in area. Therefore, the proposed I/O buffer is very suitable for mixed voltage interface applications.","PeriodicalId":185817,"journal":{"name":"The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123390765","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
Effects of demodulator errors on convergence time of look-up table based iterative algorithms for adaptive digital predistortion linearizer 解调误差对自适应数字预失真线性器查找表迭代算法收敛时间的影响
The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04. Pub Date : 2004-07-25 DOI: 10.1109/MWSCAS.2004.1354018
K. Lee, P. Gardner
{"title":"Effects of demodulator errors on convergence time of look-up table based iterative algorithms for adaptive digital predistortion linearizer","authors":"K. Lee, P. Gardner","doi":"10.1109/MWSCAS.2004.1354018","DOIUrl":"https://doi.org/10.1109/MWSCAS.2004.1354018","url":null,"abstract":"This work presents, for the first time, a simulation study of the effects of demodulator errors on look-up table (LUT) based iterative algorithms for adaptive digital predistortion (ADP) linearizer. We compare the iterative algorithms found in one-dimensional LUT, namely the polar, secant and linear methods, on the convergence time with and without demodulator errors in the feedback path of the ADP. Simulation shows that the secant method, although it has the fastest convergence, is sensitive to changes in demodulator errors, which could be corrected by adding an adaptation factor to its formula. The polar method is the least sensitive out of the three to demodulator errors, followed by the linear method.","PeriodicalId":185817,"journal":{"name":"The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114627514","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: 4
A study on the method to reduce data transfer in multi-quality VOD service 多质量视频点播业务中减少数据传输的方法研究
The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04. Pub Date : 2004-07-25 DOI: 10.1109/MWSCAS.2004.1353979
S. Suzuki, M. Kodama
{"title":"A study on the method to reduce data transfer in multi-quality VOD service","authors":"S. Suzuki, M. Kodama","doi":"10.1109/MWSCAS.2004.1353979","DOIUrl":"https://doi.org/10.1109/MWSCAS.2004.1353979","url":null,"abstract":"In the VOD service, the low resolution video data is expected for content searching, and the high resolution video data is expected for browsing. We have presented the effect of spatial video scalability encoding in cache utilization. In this study, we report comprehensive experiments on cases of various updating procedures, and the effects of differential data transferring. As a result, if a time-cycle of downloading, transcoding and browsing is too short for all clients to download contents within, the scalability encoding method can improve the quality of service, in both of data size and consumed time.","PeriodicalId":185817,"journal":{"name":"The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116481347","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
Circuit designs and fabrication of swarm-intelligence LSIs based on modeling foraging behaviors of ants 基于蚂蚁觅食行为建模的群体智能lsi电路设计与制造
The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04. Pub Date : 2004-07-25 DOI: 10.1109/MWSCAS.2004.1354300
M. Nakao, K. Izumi
{"title":"Circuit designs and fabrication of swarm-intelligence LSIs based on modeling foraging behaviors of ants","authors":"M. Nakao, K. Izumi","doi":"10.1109/MWSCAS.2004.1354300","DOIUrl":"https://doi.org/10.1109/MWSCAS.2004.1354300","url":null,"abstract":"Novel functional LSIs based on swarm intelligence of ant colony have been proposed. An ant colony is a highly organized society, though individual ants themselves act only according to simple behavioral patterns. Focusing on a foraging pattern among them, the modeled function was integrated on one LSI chip. To verify the function, the fabricated LSI was applied to solve a quasi-traveling salesman problem. Simulation results indicated that a designed LSI has swarm intelligence due to pheromone communication. This work suggests the possibility of fabricating swarm intelligence LSIs with our design method, based on modeling the foraging behaviors of ants.","PeriodicalId":185817,"journal":{"name":"The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121469771","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
An LUT-based error diagnosis technique improved in multiplicity of rectifiable errors 基于lut的误差诊断技术提高了可校正误差的多样性
The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04. Pub Date : 2004-07-25 DOI: 10.1109/MWSCAS.2004.1354043
T. Sugane, T. Iida, H. Inoue, N. Kuroki, M. Numa, K. Yamamoto
{"title":"An LUT-based error diagnosis technique improved in multiplicity of rectifiable errors","authors":"T. Sugane, T. Iida, H. Inoue, N. Kuroki, M. Numa, K. Yamamoto","doi":"10.1109/MWSCAS.2004.1354043","DOIUrl":"https://doi.org/10.1109/MWSCAS.2004.1354043","url":null,"abstract":"In an LSI design process, engineering change orders (ECO's) are often given due to logic design errors, changes of specification, and timing issue. This paper presents an improved technique called EXL/sub IT/ to rectify multiple logic design errors using LUT-based circuit model, which is needed to rectify errors with compound cells often used in standard-cell design. In contrast to the conventional technique: EXL/sub TV/ applicable only to four errors at the maximum, EXL/sub IT/ rectifies ten errors by employing iterative diagnosis procedure for subcircuits extracted based on the correctness of primary output functions. By handling the subcircuits, EXL/sub IT/ reduces both the number of LUT's and the number of errors to be considered at once. Experimental results demonstrate that most of circuits including eight to ten design errors can be rectified within shorter processing time.","PeriodicalId":185817,"journal":{"name":"The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121538691","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
DC operating point shifts in active RF/microwave frequency multipliers 有源射频/微波倍频器的直流工作点移位
The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04. Pub Date : 2004-07-25 DOI: 10.1109/MWSCAS.2004.1354368
J. E. Johnson, G. Branner
{"title":"DC operating point shifts in active RF/microwave frequency multipliers","authors":"J. E. Johnson, G. Branner","doi":"10.1109/MWSCAS.2004.1354368","DOIUrl":"https://doi.org/10.1109/MWSCAS.2004.1354368","url":null,"abstract":"In this work, changes in DC operating point shifts are analyzed for both classical and practical RF/microwave frequency multiplier configurations. It is shown that a classical, theoretical multiplier design can have a much different response when attempted in a practical circuit configuration. These differences are analyzed through harmonic balance simulation of an idealized device model. A compensation technique is suggested to achieve an expected harmonic output with a more practical circuit configuration. Finally, the effects exhibited in the idealized device model are shown to occur in a practical device model and in actual measured results.","PeriodicalId":185817,"journal":{"name":"The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126224922","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
Fast fractal encoding algorithm using the law of cosines 基于余弦定律的快速分形编码算法
The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04. Pub Date : 2004-07-25 DOI: 10.1109/MWSCAS.2004.1353969
Chou-Chen Wang, L. Lin, Shou-Hsuan Tsai
{"title":"Fast fractal encoding algorithm using the law of cosines","authors":"Chou-Chen Wang, L. Lin, Shou-Hsuan Tsai","doi":"10.1109/MWSCAS.2004.1353969","DOIUrl":"https://doi.org/10.1109/MWSCAS.2004.1353969","url":null,"abstract":"The major drawback of the fractal image compression is the high encoding complexity to find the best match between a range block and a large pool of domain blocks. This paper presents a fast fractal-encoding algorithm based on the law of cosines. The number of domain blocks searched to find the best match for each range block is safely reduced by eliminating the ineligible domain blocks using the law of cosines. Simulation results show that the proposed algorithm can produce a completely identical fractal code to that of the exhaustive search in reduced time.","PeriodicalId":185817,"journal":{"name":"The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132082409","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: 4
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