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Design of an 128-point FFT processor for OFDM applications 用于OFDM应用的128点FFT处理器的设计
Proceedings of Third International Conference on Electronics, Circuits, and Systems Pub Date : 1996-10-13 DOI: 10.1109/ICECS.1996.584499
J. Melander, T. Widhe, L. Wanhammar
{"title":"Design of an 128-point FFT processor for OFDM applications","authors":"J. Melander, T. Widhe, L. Wanhammar","doi":"10.1109/ICECS.1996.584499","DOIUrl":"https://doi.org/10.1109/ICECS.1996.584499","url":null,"abstract":"Important issues in designing ASICs are short design time, flexibility, reuse of building blocks, and reliability. These factors can be met by using automatic design tools and standard-cell design. The major drawback with this approach is the attainable circuit performance. In this paper we present an efficient design approach which combines the short design time and flexibility of the standard-cell approach and the high performance of the unconstrained cell layout style. A 128-point FFT/IFFT chip aimed at OFDM applications has successfully been designed using this approach. Further, a modular architecture is proposed that is scalable with respect to the throughput requirements. The throughput scaling can also be utilized to reduce power consumption.","PeriodicalId":402369,"journal":{"name":"Proceedings of Third International Conference on Electronics, Circuits, and Systems","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125523158","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
Synthesis and robustness evaluation of dynamic controllers for uncertain systems 不确定系统动态控制器的综合与鲁棒性评价
Proceedings of Third International Conference on Electronics, Circuits, and Systems Pub Date : 1996-10-13 DOI: 10.1109/ICECS.1996.582911
W. Colmenares, E. Granado, O. Pérez, K. Garrido
{"title":"Synthesis and robustness evaluation of dynamic controllers for uncertain systems","authors":"W. Colmenares, E. Granado, O. Pérez, K. Garrido","doi":"10.1109/ICECS.1996.582911","DOIUrl":"https://doi.org/10.1109/ICECS.1996.582911","url":null,"abstract":"In this note we propose a strategy for the synthesis of dynamic regulators for uncertain systems. The controller might be calculated so that some performance requirements (pole placement) are satisfied in any, fixed, point of the uncertain domain. Once the (quadratic) controller is calculated, its robustness is evaluated by means of a simple linear programming approach.","PeriodicalId":402369,"journal":{"name":"Proceedings of Third International Conference on Electronics, Circuits, and Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129615291","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
Generalized two-port performance evaluation 广义双端口性能评价
Proceedings of Third International Conference on Electronics, Circuits, and Systems Pub Date : 1996-10-13 DOI: 10.1109/ICECS.1996.582727
S. Potirakis, G. Alexakis, G. Tombras
{"title":"Generalized two-port performance evaluation","authors":"S. Potirakis, G. Alexakis, G. Tombras","doi":"10.1109/ICECS.1996.582727","DOIUrl":"https://doi.org/10.1109/ICECS.1996.582727","url":null,"abstract":"A generalized approach to linear two-port performance evaluation and determination of two-port performance characteristics is presented in this paper. These are analytically defined and derived in terms of general hybrid parameters, covering z-, y-, h-, and g- two-port parameters. This analysis reveals significant interrelation properties which allow the derivation of any two-port performance characteristic from just two of them.","PeriodicalId":402369,"journal":{"name":"Proceedings of Third International Conference on Electronics, Circuits, and Systems","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124520534","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
Neural network based decoupling control for multivariable systems 基于神经网络的多变量系统解耦控制
Proceedings of Third International Conference on Electronics, Circuits, and Systems Pub Date : 1996-10-13 DOI: 10.1109/ICECS.1996.584447
J. M. Galvez, M. Fonseca
{"title":"Neural network based decoupling control for multivariable systems","authors":"J. M. Galvez, M. Fonseca","doi":"10.1109/ICECS.1996.584447","DOIUrl":"https://doi.org/10.1109/ICECS.1996.584447","url":null,"abstract":"A major difficulty in multivariable control design is the cross-coupling between inputs and outputs which obscures the effects of a specific controller on the overall behavior of the system. This paper considers the application of neural networks in decoupling multivariable output feedback controllers. Simulation results are presented to show the feasibility of the proposed technique.","PeriodicalId":402369,"journal":{"name":"Proceedings of Third International Conference on Electronics, Circuits, and Systems","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130564733","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
Generation of permutations with nearest-neighbour interconnected switches 具有最近邻互连开关的排列生成
Proceedings of Third International Conference on Electronics, Circuits, and Systems Pub Date : 1996-10-13 DOI: 10.1109/ICECS.1996.582878
J. Giglmayr, Jens Güther
{"title":"Generation of permutations with nearest-neighbour interconnected switches","authors":"J. Giglmayr, Jens Güther","doi":"10.1109/ICECS.1996.582878","DOIUrl":"https://doi.org/10.1109/ICECS.1996.582878","url":null,"abstract":"The generation of arbitrary permutations (/spl equiv/rearrangeable-nonblocking interconnections) by 2-D multistage architectures with nearest-neighbours interconnected switches is analysed. Two different networks are presented and their relationship is shown by means of a transformation.","PeriodicalId":402369,"journal":{"name":"Proceedings of Third International Conference on Electronics, Circuits, and Systems","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127700578","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
Controller design for lateral manoeuvres in electromagnetic wind tunnels 电磁风洞横向机动控制器设计
Proceedings of Third International Conference on Electronics, Circuits, and Systems Pub Date : 1996-10-13 DOI: 10.1109/ICECS.1996.582938
F. Koumboulis, M. G. Skarpetis
{"title":"Controller design for lateral manoeuvres in electromagnetic wind tunnels","authors":"F. Koumboulis, M. G. Skarpetis","doi":"10.1109/ICECS.1996.582938","DOIUrl":"https://doi.org/10.1109/ICECS.1996.582938","url":null,"abstract":"The roll angle, the yaw angle and the side-slip position of test aircraft in electromagnetic wind tunnels, are independently controlled. The problem is proven to be always solvable by applying a static state feedback law involving aerodynamic and electromagnetic variables. The general forms of the static controllers, solving the problem, as well as the resulting closed loop system, are derived. The stability of the closed loop is guaranteed.","PeriodicalId":402369,"journal":{"name":"Proceedings of Third International Conference on Electronics, Circuits, and Systems","volume":"101 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120977484","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
Lossless compression of bathymetric data using an improved nonlinear discrete wavelet transform 利用改进的非线性离散小波变换对水深数据进行无损压缩
Proceedings of Third International Conference on Electronics, Circuits, and Systems Pub Date : 1996-10-13 DOI: 10.1109/ICECS.1996.582934
I. Singh, P. Agathoklis, A. Antoniou
{"title":"Lossless compression of bathymetric data using an improved nonlinear discrete wavelet transform","authors":"I. Singh, P. Agathoklis, A. Antoniou","doi":"10.1109/ICECS.1996.582934","DOIUrl":"https://doi.org/10.1109/ICECS.1996.582934","url":null,"abstract":"The compression of bathymetric data using an improved nonlinear discrete wavelet transform is considered. The technique is illustrated by applying the proposed compression algorithm to several different classes of bathymetric data. Comparisons are made with respect to compression ratio (bits per pixel) and the amount of computation involved.","PeriodicalId":402369,"journal":{"name":"Proceedings of Third International Conference on Electronics, Circuits, and Systems","volume":"315 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121267157","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
Second order distortion modeling in HBTs hbt中的二阶畸变建模
Proceedings of Third International Conference on Electronics, Circuits, and Systems Pub Date : 1996-10-13 DOI: 10.1109/ICECS.1996.584519
O. Woywode, B. Pejcinovic
{"title":"Second order distortion modeling in HBTs","authors":"O. Woywode, B. Pejcinovic","doi":"10.1109/ICECS.1996.584519","DOIUrl":"https://doi.org/10.1109/ICECS.1996.584519","url":null,"abstract":"There is a great deal of interest in operating semiconductor devices in large-signal, high frequency mode and the Heterojunction Bipolar Transistor (HBT) possesses some unique properties that make it suitable for such applications. Unexpectedly, it has very good linear properties. In this paper we examine the fundamental reasons for such good performance of HBTs, compare various models and the influence of different parameters, such as emitter resistance, base-collector capacitance and time delay of current gain. In particular, we examine the cancellation of second harmonic currents in the base emitter junction in great detail. The method of nonlinear currents was used to develop a set of analytical expressions for equivalent circuits of varying complexity. It was found that the emitter resistance R/sub ee/ linearizes the HBT at low frequencies by providing negative feedback and by bringing the phase difference of the second order currents closer to 180/spl deg/. At high frequencies the base collector capacitance C/sub bc/ dominates. The inherent nonlinearity of C/sub bc/ degrades the cancellation of second order currents in the base emitter junction. We have also found a connection between two different current gain models that makes them equivalent under certain conditions.","PeriodicalId":402369,"journal":{"name":"Proceedings of Third International Conference on Electronics, Circuits, and Systems","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126714500","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
Devil's staircases, quasiperiodicity and chaos in a driven nonlinear fourth-order electric circuit 驱动非线性四阶电路中的魔鬼阶梯、准周期性和混沌
Proceedings of Third International Conference on Electronics, Circuits, and Systems Pub Date : 1996-10-13 DOI: 10.1109/ICECS.1996.584482
I. Stouboulos, I. Kyprianidis
{"title":"Devil's staircases, quasiperiodicity and chaos in a driven nonlinear fourth-order electric circuit","authors":"I. Stouboulos, I. Kyprianidis","doi":"10.1109/ICECS.1996.584482","DOIUrl":"https://doi.org/10.1109/ICECS.1996.584482","url":null,"abstract":"We study the dynamics of a nonlinear fourth-order electric circuit driven by a sinusoidal voltage source. For the parameter values of the circuit elements we have chosen, phase-locked states, two-frequency and three-frequency quasi-periodicity are observed, while chaotic attractors are created by interior crisis. As the nonlinearity of the circuit increases, the well known double scroll attractor is created.","PeriodicalId":402369,"journal":{"name":"Proceedings of Third International Conference on Electronics, Circuits, and Systems","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121504480","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
Towards SDL specification of a European OSI-application layer protocol interface for wired personalized communications and distributed multimedia applications 面向SDL规范的欧洲osi应用层协议接口，用于有线个性化通信和分布式多媒体应用
Proceedings of Third International Conference on Electronics, Circuits, and Systems Pub Date : 1996-10-13 DOI: 10.1109/ICECS.1996.584567
H. El-Gendy
{"title":"Towards SDL specification of a European OSI-application layer protocol interface for wired personalized communications and distributed multimedia applications","authors":"H. El-Gendy","doi":"10.1109/ICECS.1996.584567","DOIUrl":"https://doi.org/10.1109/ICECS.1996.584567","url":null,"abstract":"In this paper, we present a formal specification of CSTA, a protocol interface that links the telecommunications and data processing environments to support a variety of distributed telecommunications applications. We specify it in SDL, the ITU/TSS (formerly, CCITT) standard description technique for telecommunications protocols and distributed systems. In CSTA, an application is a cooperative process between a telecommunications switching function and computing function. It is presented to the user as a single function providing enhanced services. The switching function and the computing function are typically distributed among a telecommunications network and a computer network. The interface allows flexible creation of new telecommunications services and applications. It allows computer users and applications to invoke telecommunications services on the switch. The interface protocol has applications in Intelligent Networks, Customization of Telecommunications Services, Multimedia Communications, and Universal Personalized Communications.","PeriodicalId":402369,"journal":{"name":"Proceedings of Third International Conference on Electronics, Circuits, and Systems","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127703197","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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