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Proceedings IEEE Southeastcon '95. Visualize the Future最新文献

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Data-adaptive higher order ARMA model order estimation 数据自适应高阶ARMA模型阶数估计
Proceedings IEEE Southeastcon '95. Visualize the Future Pub Date : 1995-03-26 DOI: 10.1109/SECON.1995.513086
A. Al-Smadi, D. Wilkes
{"title":"Data-adaptive higher order ARMA model order estimation","authors":"A. Al-Smadi, D. Wilkes","doi":"10.1109/SECON.1995.513086","DOIUrl":"https://doi.org/10.1109/SECON.1995.513086","url":null,"abstract":"A new method for estimating the order of a non-Gaussian autoregressive moving average (ARMA) process using higher order statistics is presented. The observed signal may be contaminated by additive, zero mean, Gaussian noise. The proposed algorithm uses third-order computations, and is based on the minimum eigenvalue of a family of covariance matrices derived from the observed data. One of the novel features of this approach is that the authors avoid nonstationary effects due to finite-length observations, thus they work with data matrices rather than calculated cumulants. This is a generalization of the approach of Liang et al. [1993] and Liang [1992], which eliminates the estimation of the a/sub i/ and b/sub i/ coefficients. Only the model orders are estimated. In theory, this approach should outperform the original work of Liang at low SNRs, since cumulants are blind to Gaussian noise. The new algorithm is applied to both ARMA and autoregressive with exogenous input (ARX) models. Examples are presented to illustrate the effectiveness of the technique.","PeriodicalId":334874,"journal":{"name":"Proceedings IEEE Southeastcon '95. Visualize the Future","volume":"193 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116981668","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: 8
Decoding binary BCH codes 解码二进制BCH码
Proceedings IEEE Southeastcon '95. Visualize the Future Pub Date : 1995-03-26 DOI: 10.1109/SECON.1995.513059
L. Joiner, J. Komo
{"title":"Decoding binary BCH codes","authors":"L. Joiner, J. Komo","doi":"10.1109/SECON.1995.513059","DOIUrl":"https://doi.org/10.1109/SECON.1995.513059","url":null,"abstract":"BCH codes are powerful error-correcting codes. Algorithms used for decoding must be able to find the error locations, and for nonbinary codes, the error magnitudes. One of the most efficient algorithms for decoding BCH codes is Berlekamp's algorithm. To find the error locations the algorithm must solve a set of t equations in t unknowns. This paper explores, for binary BCH codes, a new method that uses half of the unknowns to determine the other unknowns, thus solving t/2 equations in t/2 unknowns. However, because of the reduced number of equations, the algorithm only iterates half the number of times. The performance of the new algorithm is shown to be superior to both Berlekamp's algorithm and a simplified algorithm in terms of execution times, which includes the field multiplications and additions and required memory.","PeriodicalId":334874,"journal":{"name":"Proceedings IEEE Southeastcon '95. Visualize the Future","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122485138","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: 11
Multiple covariance matrix spectral model for direction of arrival 到达方向的多重协方差矩阵谱模型
Proceedings IEEE Southeastcon '95. Visualize the Future Pub Date : 1995-03-26 DOI: 10.1109/SECON.1995.513126
H. Alnajjar, D. Wilkes
{"title":"Multiple covariance matrix spectral model for direction of arrival","authors":"H. Alnajjar, D. Wilkes","doi":"10.1109/SECON.1995.513126","DOIUrl":"https://doi.org/10.1109/SECON.1995.513126","url":null,"abstract":"Presents a novel algorithm for modeling the behavior of the measured eigenvalues in order to find the direction of arrivals (DOAs) of sources. The authors use only the eigenvalues and not the eigenvectors to find the DOAs; no other algorithm works this way. The modeling process is based on the critical distance formula developed previously by the authors, which describes the best location to add a sensor to an existing subarray in order to improve the resolution performance of an array, also it is based on the concept of a structurally adaptive array, which promotes the idea of adapting the size and geometry of a subarray (of a much larger array) in order to optimize the detection for different scenarios.","PeriodicalId":334874,"journal":{"name":"Proceedings IEEE Southeastcon '95. Visualize the Future","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129713653","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
A model for a universally testable logic element 通用可测试逻辑元素的模型
Proceedings IEEE Southeastcon '95. Visualize the Future Pub Date : 1995-03-26 DOI: 10.1109/SECON.1995.513062
H. M. Razavi, A. Elahi
{"title":"A model for a universally testable logic element","authors":"H. M. Razavi, A. Elahi","doi":"10.1109/SECON.1995.513062","DOIUrl":"https://doi.org/10.1109/SECON.1995.513062","url":null,"abstract":"A model is presented for a logic element to be used in the design of testable logic circuits. The logic element consists of a threshold gate and an exclusive-or. A circuit designed exclusively with such an element, according to the rules set here, can be tested for all data stuck-at faults. Only two predetermined test vectors are needed for testing any combinational circuit and four for any sequential circuit, for data stuck-at faults, regardless of the complexity of the circuit. A possible CMOS circuit realization for the model is given.","PeriodicalId":334874,"journal":{"name":"Proceedings IEEE Southeastcon '95. Visualize the Future","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128463453","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
Signal processing methods for melt pump outlet pressure analysis 熔体泵出口压力分析的信号处理方法
Proceedings IEEE Southeastcon '95. Visualize the Future Pub Date : 1995-03-26 DOI: 10.1109/SECON.1995.513087
G.S. Hosangadi, M. S. Ellison, J. Gowdy
{"title":"Signal processing methods for melt pump outlet pressure analysis","authors":"G.S. Hosangadi, M. S. Ellison, J. Gowdy","doi":"10.1109/SECON.1995.513087","DOIUrl":"https://doi.org/10.1109/SECON.1995.513087","url":null,"abstract":"This paper presents the development of an on-line monitoring system for a textile quality control application. The feature analyzed is the pack pressure associated with the melt spinning process. Any variations in the pack pressure will affect the rate of flow of melt through the spinnerette and this in turn will result in non-uniform diameter along the filament length. This paper focusses on variations caused by misalignment between the motor and melt pump shaft, and the meshing action of the gear teeth in the melt pump. A new method which uses the autocovariance of the pack pressure data to detect misalignment is proposed. Signal processing methods using median filtering and M-point averaging are presented which can be used to obtain useful information on the gear teeth structure.","PeriodicalId":334874,"journal":{"name":"Proceedings IEEE Southeastcon '95. Visualize the Future","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128646688","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
Towards user oriented object modelling in virtual reality 面向用户的虚拟现实对象建模
Proceedings IEEE Southeastcon '95. Visualize the Future Pub Date : 1995-03-26 DOI: 10.1109/SECON.1995.513135
O. Karacali
{"title":"Towards user oriented object modelling in virtual reality","authors":"O. Karacali","doi":"10.1109/SECON.1995.513135","DOIUrl":"https://doi.org/10.1109/SECON.1995.513135","url":null,"abstract":"Virtual reality (VR) is a breakthrough technology that allows one to step through the computer screen into a 3-D artificial world. This paper explores one of the potential applications of virtual reality to computer aided design and manufacture (CAD/CAM). The paper describes the \"object modelling (OM)\" in VR and related \"VR technology\" for user interactions in virtual environments. VRT (virtual reality tool kit) is used to develop and verify the simulation of the products (e,g. electronic component design). Superscape command language (SCL) is used to generate the object and manipulations. Here, an attempt is made to determine whether the two technologies (OM & VR) are a means to the same and or whether they contribute towards a more efficient route to product development.","PeriodicalId":334874,"journal":{"name":"Proceedings IEEE Southeastcon '95. Visualize the Future","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131797700","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
Emulation of 3-phase power for study of multi phase instrumentation 三相电源仿真用于多相仪器的研究
Proceedings IEEE Southeastcon '95. Visualize the Future Pub Date : 1995-03-26 DOI: 10.1109/SECON.1995.513089
S. Wunnava, V. Ordax
{"title":"Emulation of 3-phase power for study of multi phase instrumentation","authors":"S. Wunnava, V. Ordax","doi":"10.1109/SECON.1995.513089","DOIUrl":"https://doi.org/10.1109/SECON.1995.513089","url":null,"abstract":"In present times, most household appliances such as air conditioners and electric ranges are driven by two-phase power. Also, most industrial equipment requires three-phase power. However, much of the present day instrumentation is designed for single-phase power based systems. There is a definite need for personnel in the power industry to learn and practice multi-phase power-based instrumentation in a safe and scaled down laboratory environment. In addition, emulation of three-phase power properties and characteristics can be accomplished at much lower voltage and current levels. Such an emulation system would be very helpful for individuals who would like to learn about three-phase power with practically no physical risk and at a very early stage in the individual's career. The world is becoming highly computerized. It would be very informative, efficient, and instructive, if three-phase related data could be stored and examined for proper analysis. The authors combined the concepts of three-phase emulation, computerized data storage, and analysis to develop a three-phase power emulator system. In this article, the design and developmental aspects of the three-phase power emulator and associated instrumentation schemes are presented. Finally, the authors discuss the applications of such an emulator in the \"real world\" environment.","PeriodicalId":334874,"journal":{"name":"Proceedings IEEE Southeastcon '95. Visualize the Future","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132282903","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
The Region 3 electro-technology industries database 第三区电子技术工业数据库
Proceedings IEEE Southeastcon '95. Visualize the Future Pub Date : 1995-03-26 DOI: 10.1109/SECON.1995.513120
D. G. Green, S.E. Dipiazza, M.L. Landry
{"title":"The Region 3 electro-technology industries database","authors":"D. G. Green, S.E. Dipiazza, M.L. Landry","doi":"10.1109/SECON.1995.513120","DOIUrl":"https://doi.org/10.1109/SECON.1995.513120","url":null,"abstract":"This paper describes the implementation and deployment of a query engine to allow e-mail access to an electro-technology industries (ETI) database to assist in identifying possible employers. The developed system allows controlled access to the database using a personal computer as a query server. Access is based on membership in IEEE and residence within IEEE's Region 3 (Southeast US and Jamaica).","PeriodicalId":334874,"journal":{"name":"Proceedings IEEE Southeastcon '95. Visualize the Future","volume":"162 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115692031","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
Harmonic effects on synchronous generators voltage regulation 谐波对同步发电机电压调节的影响
Proceedings IEEE Southeastcon '95. Visualize the Future Pub Date : 1995-03-26 DOI: 10.1109/SECON.1995.513121
A. Samra, K.M. Islam
{"title":"Harmonic effects on synchronous generators voltage regulation","authors":"A. Samra, K.M. Islam","doi":"10.1109/SECON.1995.513121","DOIUrl":"https://doi.org/10.1109/SECON.1995.513121","url":null,"abstract":"With the increasing concern of the effects of harmonic distortion and the lack of documentation of harmonic problems associated with synchronous machines, it is imperative that work to understand the effects of harmonics on synchronous machines be accelerated. This paper evaluates the voltage regulation of a synchronous generator with sinusoidal and distorted voltage waveform conditions. A motor-generator set is employed as an integral part of the power system simulator to supply power to various loads during the performance of the test. Harmonic distortion is introduced by connecting nonlinear loads to produce distorted voltage and current waveforms. To record the electrical and mechanical quantities, a data acquisition system is used. All data acquired is saved for future use in analysis and reporting. The test results show that the voltage regulation of a synchronous generator under various load conditions is related to the different level of harmonic distortion produced by the load. This research provides useful data to develop harmonic standards with better understanding of the impact of harmonics on equipment operation.","PeriodicalId":334874,"journal":{"name":"Proceedings IEEE Southeastcon '95. Visualize the Future","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129331908","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
Bandwidth allocation for connectionless traffic in ATM networks ATM网络中无连接流量的带宽分配
Proceedings IEEE Southeastcon '95. Visualize the Future Pub Date : 1995-03-26 DOI: 10.1109/SECON.1995.513071
S. Varada, R. Sankar
{"title":"Bandwidth allocation for connectionless traffic in ATM networks","authors":"S. Varada, R. Sankar","doi":"10.1109/SECON.1995.513071","DOIUrl":"https://doi.org/10.1109/SECON.1995.513071","url":null,"abstract":"Asynchronous transfer mode (ATM) is the emerging standard for broadband networking (B-ISDN) with its ability to support integrated traffic (data/voice/image/video). Information is exchanged in ATM networks by prior establishment of connection between source and destination(s). This brings up the question of how one can interconnect connectionless oriented LANs and MANs (non-ATM based networks) with connection oriented ATM. Bandwidth negotiation with the ATM network to meet the quality of service (QoS) requirements of the source traffic is one of the primary concerns of internetworking LAN/MAN and ATM. The paper initially assesses existing protocols in terms of the bandwidth allocation with respect to QoS requirements. The merits and demerits of these protocols are also discussed. A new protocol, \"bandwidth allocation on source demand,\" is proposed in which the data transfer is based on \"establishing a communication channel\" to the destination utilizing the bandwidth advertisement feature. The proposed protocol is more reliable, in terms of presenting source traffic to the network, and will provide better performance over existing protocols. A framework to measure the performance of the proposed protocol is identified.","PeriodicalId":334874,"journal":{"name":"Proceedings IEEE Southeastcon '95. Visualize the Future","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131312505","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
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