发布求助
文献互助 智能选刊 最新文献

2007 8th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services最新文献

筛选
英文 中文
Fractional Operators Approach in Reflection and Diffraction Problems 反射和衍射问题中的分数算子方法
2007 8th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services Pub Date : 2007-11-05 DOI: 10.1109/TELSKS.2007.4375985
M. V. Ivakhnychenko, E. Veliev
{"title":"Fractional Operators Approach in Reflection and Diffraction Problems","authors":"M. V. Ivakhnychenko, E. Veliev","doi":"10.1109/TELSKS.2007.4375985","DOIUrl":"https://doi.org/10.1109/TELSKS.2007.4375985","url":null,"abstract":"Applications of fractional operators approach to electromagnetic waves reflection and diffraction problems are considered. Reflection properties of fractional or intermediate solutions obtained using fractional curl operator are analyzed. It is shown that this approach is a useful technique for the description of solutions to the reflection problems for some known mediums in terms of the fractional order. Also new features of boundaries corresponding to fractional solutions can be derived. In this paper intermediate boundaries are modelled with BI slab with a PEC backing. Finally, using fractional derivative new boundary conditions are introduced. The problem of diffraction on strip with fractional boundary conditions is solved.","PeriodicalId":350740,"journal":{"name":"2007 8th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123834845","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
8 Element Adaptive Antenna Array Synthesis with Tschebyscheff Polynomials and Algorithmic Implementation 基于Tschebyscheff多项式的8元自适应天线阵列合成及其算法实现
2007 8th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services Pub Date : 2007-11-05 DOI: 10.1109/TELSKS.2007.4376026
U.V. Buch, S. Sharma
{"title":"8 Element Adaptive Antenna Array Synthesis with Tschebyscheff Polynomials and Algorithmic Implementation","authors":"U.V. Buch, S. Sharma","doi":"10.1109/TELSKS.2007.4376026","DOIUrl":"https://doi.org/10.1109/TELSKS.2007.4376026","url":null,"abstract":"In a reverse process to antenna analysis we have tried here to enumerate various methods that can be used to determine input distribution based on given radiation pattern. This can be done either by source amplitude or phase control and controlling element spacing. Further we wish to throw some light on performance enhancement even when element spacing is reduced. When in order to keep fix aperture we sometimes have to put the antenna elements close to each other than half wavelength. It is surprising to note that even in reduced spacing with some kind of distribution the array behaves well. The craving desire of engineers to go for super directive array forces researchers to study various polynomial distributions. We are discussing here Tschebyscheff polynomial method which is quite optimum for super directive or super gain design. This method absorbs most problems due to element space reduction and hence is very much useful when we wish to design antenna that will give good directivity.","PeriodicalId":350740,"journal":{"name":"2007 8th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125147906","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
Frequency Stabilization of a VCDRO by Microcontroller Supported Frequency Lock Loop 单片机支持锁频环的VCDRO稳频
2007 8th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services Pub Date : 2007-11-05 DOI: 10.1109/TELSKS.2007.4376097
P. Manojlovic, V. Smiljakovic, S. Jovanovic
{"title":"Frequency Stabilization of a VCDRO by Microcontroller Supported Frequency Lock Loop","authors":"P. Manojlovic, V. Smiljakovic, S. Jovanovic","doi":"10.1109/TELSKS.2007.4376097","DOIUrl":"https://doi.org/10.1109/TELSKS.2007.4376097","url":null,"abstract":"The paper presents frequency stabilization of a VCDRO operating at 11 GHz by using a frequency lock loop supported by microcontroller. The signal from a PLL synthesizer is used as a reference signal in the FLL in order to obtain a signal with characteristics like one originating from a free- running VCDRO having, in the same time, stability close to a signal from PLL. The two signals are compared at 40 MHz band where a IF filter is designed in order to limit a stability difference between a VCDRO and PLL. A control signal within the FLL loop is realized with microcontroller that ensures a very stable operation over a wide temperature range. The signal obtained in the presented way meets the desired stability with very low level of spurious signals and meets all requirements for LO signals in modern microwave systems.","PeriodicalId":350740,"journal":{"name":"2007 8th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116403803","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 ADSL and ADSL2+ Service Quality ADSL和ADSL2+业务质量评估
2007 8th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services Pub Date : 2007-11-05 DOI: 10.1109/TELSKS.2007.4375939
M. Randelovic, A. Atanasković, N. Dončov
{"title":"Estimation of ADSL and ADSL2+ Service Quality","authors":"M. Randelovic, A. Atanasković, N. Dončov","doi":"10.1109/TELSKS.2007.4375939","DOIUrl":"https://doi.org/10.1109/TELSKS.2007.4375939","url":null,"abstract":"In this paper, estimation of ADSL and ADSL2+ service performances is presented. Since the transmission medium quality is one of the key requirements for performance capabilities of these services, an analytical method for modelling of primary per-unit length parameters of twisted pair is described. This model is implemented in the existing software extended to allow for estimation of data rates on telephone subscriber loops for xDSL service. For the example of particular twisted pair telephone cable, an experimental measurement of its parameters is done, which is followed by their modelling using described software. At the end, comparison of experimental and modelled results of capacity for specific cable is presented.","PeriodicalId":350740,"journal":{"name":"2007 8th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130282890","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
Mobile Broadband Networking Based on IEEE 802.20 Standard 基于IEEE 802.20标准的移动宽带组网
2007 8th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services Pub Date : 2007-11-05 DOI: 10.1109/TELSKS.2007.4375983
B. Bakmaz, Z. Bojkovic, D. Milovanovic, M. Bakmaz
{"title":"Mobile Broadband Networking Based on IEEE 802.20 Standard","authors":"B. Bakmaz, Z. Bojkovic, D. Milovanovic, M. Bakmaz","doi":"10.1109/TELSKS.2007.4375983","DOIUrl":"https://doi.org/10.1109/TELSKS.2007.4375983","url":null,"abstract":"In the near feature, mobile applications development will gradually become an interesting research field from the IP structure point of view. In connection with this, a survey of the emerging IEEE 802.20 standard is presented. This paper also provides the technical aspects as well as the system architecture of the IEEE 802.20. The comparison with other similar standards like 802.16e is given, too. An example for invoking this standard in the broadband network is emphasized.","PeriodicalId":350740,"journal":{"name":"2007 8th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services","volume":"45 21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128728379","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
Complex-Valued Maximum Joint Entropy Algorithm for Blind Decision Feedback Equalizer 盲决策反馈均衡器的复值最大联合熵算法
2007 8th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services Pub Date : 2007-11-05 DOI: 10.1109/TELSKS.2007.4376086
V. Krstic, Z. Petrovíc
{"title":"Complex-Valued Maximum Joint Entropy Algorithm for Blind Decision Feedback Equalizer","authors":"V. Krstic, Z. Petrovíc","doi":"10.1109/TELSKS.2007.4376086","DOIUrl":"https://doi.org/10.1109/TELSKS.2007.4376086","url":null,"abstract":"This paper proposes the complex domain solution of the blind decision feedback equalizer (DFE) based on joint entropy maximization (JEM) criterion. For the feedback filter of DFE, a new complex activation function is defined and then the stochastic gradient algorithm of the JEM type is derived. The fact that the JEM cost is a real function of complex quantities suggests the method associated to a least man-square criterion.","PeriodicalId":350740,"journal":{"name":"2007 8th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130867267","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
Antennas in Metrology of Electromagnetic Fields near Radiation Sources 近辐射源电磁场测量中的天线
2007 8th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services Pub Date : 2007-11-05 DOI: 10.1109/TELSKS.2007.4376025
E. Grudzinski, V. Nichoga, I. Prudyus
{"title":"Antennas in Metrology of Electromagnetic Fields near Radiation Sources","authors":"E. Grudzinski, V. Nichoga, I. Prudyus","doi":"10.1109/TELSKS.2007.4376025","DOIUrl":"https://doi.org/10.1109/TELSKS.2007.4376025","url":null,"abstract":"Measurement of electromagnetic fields (EMF) nearby radiation sources even in free space are realized with relatively low accuracy. The considerable decrease of measuring accuracy is caused by interconnection of the field source and the measuring antenna, and the results of measurements are also influenced by different objects which are near the measuring place, including people. In this connection, EMF measurements near-by radiation sources, i. e. in the near zone, have specific character. The noted features are the sources of numerous measurement errors both when calibrating antennas in standards and during conducting practical measurements in real conditions.","PeriodicalId":350740,"journal":{"name":"2007 8th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130981342","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
VCC as an Integrator of Services in Power Distribution VCC作为配电服务的集成商
2007 8th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services Pub Date : 2007-11-05 DOI: 10.1109/TELSKS.2007.4376091
B. Miljkovic, M. Popovic, I. Basicevic
{"title":"VCC as an Integrator of Services in Power Distribution","authors":"B. Miljkovic, M. Popovic, I. Basicevic","doi":"10.1109/TELSKS.2007.4376091","DOIUrl":"https://doi.org/10.1109/TELSKS.2007.4376091","url":null,"abstract":"In the conditions of deregulation and the established electric power market, the way of business management changes and the functions of electric power production, transport and distribution are clearly defined and separated. Power distribution faces the fact that they have a customer on one side and transport and electric power manufacturer on the other side. Everyone in this chain, with the customer as the last link, has a direct influence on the quality of delivered electric power, which means that it is very important to provide a permanent and quality relationship between these two factors. One of the solutions is the virtual call centre - VCC implementation.","PeriodicalId":350740,"journal":{"name":"2007 8th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130024645","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
Pulse Deformation due to Fourth Order Dispersion and Inband Interference 四阶色散和带内干扰引起的脉冲变形
2007 8th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services Pub Date : 2007-11-05 DOI: 10.1109/TELSKS.2007.4376088
M. Stefanovic, A. Panajotovic, D. Milovic
{"title":"Pulse Deformation due to Fourth Order Dispersion and Inband Interference","authors":"M. Stefanovic, A. Panajotovic, D. Milovic","doi":"10.1109/TELSKS.2007.4376088","DOIUrl":"https://doi.org/10.1109/TELSKS.2007.4376088","url":null,"abstract":"Recent research in optical communication have made some important discoveries such as femtosecod laser as well as new methods for neutralization of the second and third order dispersion influence. The fourth order dispersion influence on pulse propagation must not be neglected in case of using these new methods and lasers. The impact of fourth order dispersion on the pulse propagation in the presence of interference is the main subject of this paper. We considered the worst case of interference, i.e. case when phase shift of interference is pi. The resulting pulse shape at the receiver is obtained using analytical expressions that describe propagation along the fiber. Numerical results are presented and compared for various signal-to- interference ratios (SIR).","PeriodicalId":350740,"journal":{"name":"2007 8th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125328709","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 New Low-sensitivity Second-order Allpass Section Suitable for Fractional Delay Filter Realizations 一种适用于分数阶延迟滤波器实现的低灵敏度二阶全通截面
2007 8th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services Pub Date : 2007-11-05 DOI: 10.1109/TELSKS.2007.4376001
K. Ivanova, G. Stoyanov
{"title":"A New Low-sensitivity Second-order Allpass Section Suitable for Fractional Delay Filter Realizations","authors":"K. Ivanova, G. Stoyanov","doi":"10.1109/TELSKS.2007.4376001","DOIUrl":"https://doi.org/10.1109/TELSKS.2007.4376001","url":null,"abstract":"In this paper a new second-order digital allpass section with very low sensitivity for transfer function poles near z=0 is developed and investigated. It is shown that most of the allpass-structures-based fractional-delay (FD) filters are having such poles and there are no suitable allpass sections in the literature. The new section is ensuring high accuracy realization of FD filters even in a severely limited wordlength environment.","PeriodicalId":350740,"journal":{"name":"2007 8th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122523416","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
首页 上一页
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：481959085
Book学术官方微信