发布求助
文献互助 智能选刊 最新文献

[1991 Proceedings] 6th Mediterranean Electrotechnical Conference最新文献

筛选
英文 中文
A combined scheme in communications graduate education: its origin, evolution, and future 传播学研究生教育的组合方案:起源、演变与未来
[1991 Proceedings] 6th Mediterranean Electrotechnical Conference Pub Date : 1991-05-22 DOI: 10.1109/MELCON.1991.162126
A. Figueiras-Vidal, V. Ortega-Castro, G. León-Serrano
{"title":"A combined scheme in communications graduate education: its origin, evolution, and future","authors":"A. Figueiras-Vidal, V. Ortega-Castro, G. León-Serrano","doi":"10.1109/MELCON.1991.162126","DOIUrl":"https://doi.org/10.1109/MELCON.1991.162126","url":null,"abstract":"A discussion is presented of the origin, evolution, present situation, and future proposals of a graduate education program in information technologies that was developed with a modular structure and multiobjective goals in training. The discussion shows the advantages and difficulties of such an approach, as well as some of the possibilities for alleviating the difficulties.<<ETX>>","PeriodicalId":193917,"journal":{"name":"[1991 Proceedings] 6th Mediterranean Electrotechnical Conference","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115841779","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
Estimation of a receiver signature in digital radio links using M-QAM modulation 使用M-QAM调制的数字无线电链路中接收机信号的估计
[1991 Proceedings] 6th Mediterranean Electrotechnical Conference Pub Date : 1991-05-22 DOI: 10.1109/MELCON.1991.161902
A. Rodrigues, A. Ferreira, L. Fernandes, C. Salema
{"title":"Estimation of a receiver signature in digital radio links using M-QAM modulation","authors":"A. Rodrigues, A. Ferreira, L. Fernandes, C. Salema","doi":"10.1109/MELCON.1991.161902","DOIUrl":"https://doi.org/10.1109/MELCON.1991.161902","url":null,"abstract":"The characterization of the quality of digital radio links has to be done with a knowledge of system sensitivity to selective fading, usually well represented by the signature of the system. A method for the computation of the signature of a M-QAM system is described, considering the carrier and symbol synchronisms. The results obtained using that method are then compared with those obtained by simulation.<<ETX>>","PeriodicalId":193917,"journal":{"name":"[1991 Proceedings] 6th Mediterranean Electrotechnical Conference","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132543284","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
New contributions to radar target discrimination using E-pulse technique e脉冲技术对雷达目标识别的新贡献
[1991 Proceedings] 6th Mediterranean Electrotechnical Conference Pub Date : 1991-05-22 DOI: 10.1109/MELCON.1991.161882
A.G. Molina, M. Carrión
{"title":"New contributions to radar target discrimination using E-pulse technique","authors":"A.G. Molina, M. Carrión","doi":"10.1109/MELCON.1991.161882","DOIUrl":"https://doi.org/10.1109/MELCON.1991.161882","url":null,"abstract":"Methods to improve the results obtained by the E-pulse radar target discrimination technique are discussed. This is achieved by using a family of polynomials as subsectional pulse basis functions. The sensitivity of E-pulse performance to the presence of random noise disturbing the target impulse response for this family of pulse functions is investigated. Numerical examples of discrimination between differing targets are presented.<<ETX>>","PeriodicalId":193917,"journal":{"name":"[1991 Proceedings] 6th Mediterranean Electrotechnical Conference","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130040228","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
A broadband measurement system for the indoor multipath fading channel 一种室内多径衰落信道宽带测量系统
[1991 Proceedings] 6th Mediterranean Electrotechnical Conference Pub Date : 1991-05-22 DOI: 10.1109/MELCON.1991.161941
W. Pietsch
{"title":"A broadband measurement system for the indoor multipath fading channel","authors":"W. Pietsch","doi":"10.1109/MELCON.1991.161941","DOIUrl":"https://doi.org/10.1109/MELCON.1991.161941","url":null,"abstract":"A system is described for broadband measurements of the multipath fading channel which is found in the indoor radio environment or in factories. The system employs the direct-sequence spread-spectrum technique. The transmitted wideband probe signal is an m-sequence with 511 chips phase-shift keying (PSK)-modulated onto a 1.75-GHz carrier. Due to the chip duration of 22.7 ns, the system is able to detect differences in path length approximately=7 m. The correlation is performed by a SAW-convolver with 16 mu s integration time, delivering measurements of excess delay up to 10 mu s in the present configuration.<<ETX>>","PeriodicalId":193917,"journal":{"name":"[1991 Proceedings] 6th Mediterranean Electrotechnical Conference","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130085270","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
New results on deriving protocol specifications from service specifications 关于从服务规范派生协议规范的新结果
[1991 Proceedings] 6th Mediterranean Electrotechnical Conference Pub Date : 1991-05-22 DOI: 10.1109/MELCON.1991.162032
M. Kapus-Kolar
{"title":"New results on deriving protocol specifications from service specifications","authors":"M. Kapus-Kolar","doi":"10.1109/MELCON.1991.162032","DOIUrl":"https://doi.org/10.1109/MELCON.1991.162032","url":null,"abstract":"Two algorithms for deriving a protocol specification from a service specification have been developed by G.V. Bochmann et al. (1986). The algorithms accept an arbitrary number of protocol entities communicating over reliable FIFO channels. The legal sequences of service interactions are specified in a dialect of basic LOTOS. A similar algorithm with a more efficient synchronization method is proposed.<<ETX>>","PeriodicalId":193917,"journal":{"name":"[1991 Proceedings] 6th Mediterranean Electrotechnical Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130274305","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
System implementation of look up table FFT 系统实现查找表FFT
[1991 Proceedings] 6th Mediterranean Electrotechnical Conference Pub Date : 1991-05-22 DOI: 10.1109/MELCON.1991.161861
M. S. Mohammed, S. Lorenzo
{"title":"System implementation of look up table FFT","authors":"M. S. Mohammed, S. Lorenzo","doi":"10.1109/MELCON.1991.161861","DOIUrl":"https://doi.org/10.1109/MELCON.1991.161861","url":null,"abstract":"The implementation of a fast Fourier transform (FFT) look-up table is developed. Radix 2 is selected to work on a large range of data. The system is constructed to generate a series of tables depending on the input data. Each table has N/4 values of cosines and sines depending on the value of N. This system provides a fast method of FFT implementation. The flow chart and software provided for testing the result are discussed.<<ETX>>","PeriodicalId":193917,"journal":{"name":"[1991 Proceedings] 6th Mediterranean Electrotechnical Conference","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133898527","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
Electromagnetic modeling of chiral planar integrated structures 手性平面集成结构的电磁建模
[1991 Proceedings] 6th Mediterranean Electrotechnical Conference Pub Date : 1991-05-22 DOI: 10.1109/MELCON.1991.161922
A. Toscano, L. Vegni
{"title":"Electromagnetic modeling of chiral planar integrated structures","authors":"A. Toscano, L. Vegni","doi":"10.1109/MELCON.1991.161922","DOIUrl":"https://doi.org/10.1109/MELCON.1991.161922","url":null,"abstract":"An electromagnetic model of a planar stratified structure with an isotropic chiral grounded slab under planar electric excitation conditions is presented. The solution is obtained by using the multidimensional Fourier transform applied to the partial differential equations describing the electromagnetic field, and expressed in terms of dyadic (electric and magnetic) Green's functions. Equivalent circuit representations of the electromagnetic problem solution with an example of the evaluation of the pattern radiated by an electric vertical point-source located at the interface plane between the chiral slab and the homogeneous isotropic upper half-space are given.<<ETX>>","PeriodicalId":193917,"journal":{"name":"[1991 Proceedings] 6th Mediterranean Electrotechnical Conference","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130828244","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
State space stability analysis of sigma-delta modulators σ - δ调制器状态空间稳定性分析
[1991 Proceedings] 6th Mediterranean Electrotechnical Conference Pub Date : 1991-05-22 DOI: 10.1109/MELCON.1991.161848
B. Korosec, M. Golob, Z. Cucej, D. Donlagic
{"title":"State space stability analysis of sigma-delta modulators","authors":"B. Korosec, M. Golob, Z. Cucej, D. Donlagic","doi":"10.1109/MELCON.1991.161848","DOIUrl":"https://doi.org/10.1109/MELCON.1991.161848","url":null,"abstract":"A method for analyzing the stability of sigma-delta modulators is presented. The method is based on the state space representation of a system and can also be applied to other nonlinear systems. Inaccuracies due to the simplified model were avoided by using a discrete time nonlinear model to a modulator, which is as close as possible to the real system.<<ETX>>","PeriodicalId":193917,"journal":{"name":"[1991 Proceedings] 6th Mediterranean Electrotechnical Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131081562","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
Suboptimum MLSE for severe echos using metric forecast 使用度量预测的严重回声次优MLSE
[1991 Proceedings] 6th Mediterranean Electrotechnical Conference Pub Date : 1991-05-22 DOI: 10.1109/MELCON.1991.161904
W. Sauer-Greff
{"title":"Suboptimum MLSE for severe echos using metric forecast","authors":"W. Sauer-Greff","doi":"10.1109/MELCON.1991.161904","DOIUrl":"https://doi.org/10.1109/MELCON.1991.161904","url":null,"abstract":"Because of its complexity, the Viterbi algorithm is unsuitable for severe intersymbol interference (ISI) in the presence of extreme echos. Due to erroneous path discarding suboptimum breadth-first algorithms like the M-algorithm fail at poor signal-to-noise ratio because all youngest path symbols are weakly valued by the slight amount of energy at the beginning of the channel impulse response. The method of metric forecast estimates the metric which a path will achieve, when the current youngest symbol arrives at a main energy section of the impulse response and thus reduces the problem in path selection. Simulation results show that a simple decision feedback forecast algorithm is sufficient.<<ETX>>","PeriodicalId":193917,"journal":{"name":"[1991 Proceedings] 6th Mediterranean Electrotechnical Conference","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131259290","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
An externally triggered CMOS triangle and/or ramp pulse generator 一个外部触发的CMOS三角形和/或斜坡脉冲发生器
[1991 Proceedings] 6th Mediterranean Electrotechnical Conference Pub Date : 1991-05-22 DOI: 10.1109/MELCON.1991.161834
G. Tombras, S. Siskos
{"title":"An externally triggered CMOS triangle and/or ramp pulse generator","authors":"G. Tombras, S. Siskos","doi":"10.1109/MELCON.1991.161834","DOIUrl":"https://doi.org/10.1109/MELCON.1991.161834","url":null,"abstract":"A simple triangle and/or ramp-like pulse generator especially designed for CMOS monolithic implementation is described. An external capacitor is used to set the width of the base of the triangle, and a pulse-like waveform generator determines the period of the pulses. The basic building blocs of the triangle pulse generator consist of a voltage integrator, two voltage comparators, and two D-type flip-flops.<<ETX>>","PeriodicalId":193917,"journal":{"name":"[1991 Proceedings] 6th Mediterranean Electrotechnical Conference","volume":"125 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132949530","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信