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2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing最新文献

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Asymptotic ergodic capacity of multidimensional vector-sensor array MIMO channels 多维矢量传感器阵列MIMO信道的渐近遍历容量
2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing Pub Date : 2008-07-25 DOI: 10.1109/CSNDSP.2008.4610784
O. Ertug
{"title":"Asymptotic ergodic capacity of multidimensional vector-sensor array MIMO channels","authors":"O. Ertug","doi":"10.1109/CSNDSP.2008.4610784","DOIUrl":"https://doi.org/10.1109/CSNDSP.2008.4610784","url":null,"abstract":"We analyze asymptotic ergodic capacity of multidimensional vector-sensor array MIMO (PMD-MIMO) channels established by the use of dual-polarized antennas in the form of 1D, 2D and/or 3D MIMO arrays. Based on the identification of the decomposition of PMD-MIMO channels into multiple independently-fading and scaled classical MIMO channels in parallel, we consequently derive corresponding asymptotic ergodic capacities analytically via tools out of free probability theory. The analysis of derived asymptotic ergodic capacity expressions in terms of antenna locus aspect ratio beta, average symbol SNR per antenna gamma3 and cross-polar discrimination XPD as well as comparison with asymptotic ergodic capacity of classical MIMO channels present important gains in using compact multidimensional vector-sensor array MIMO systems in asymptotic regimes.","PeriodicalId":241330,"journal":{"name":"2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125841365","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
Techno-economic study of a modeled active Ethernet FTTB deployment 模拟有源以太网FTTB部署的技术经济研究
2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing Pub Date : 2008-07-25 DOI: 10.1109/CSNDSP.2008.4610815
S. Azodolmolky, Ioannis Tomkos
{"title":"Techno-economic study of a modeled active Ethernet FTTB deployment","authors":"S. Azodolmolky, Ioannis Tomkos","doi":"10.1109/CSNDSP.2008.4610815","DOIUrl":"https://doi.org/10.1109/CSNDSP.2008.4610815","url":null,"abstract":"FTTB is recognized as the choice for true broadband access and major deployments of the technology begin to approach. Among various architectures and technologies of FTTB, home run active Ethernet FTTB is an interesting technology. An important design issue related to FTTB deployments is the high level of CAPEX. In order to justify the FTTB deployments, service providers and network planners require a tool to assist them in selecting an optimized deployment strategy and network design. Lack of modeling tools to perform high level FTTB network planning is the main motivation behind this work. A configurable and customizable techno-economic model, which assist network planners and decision makers to have a high-level insight of Ethernet FTTB deployment is presented in this paper. The model captures both the technical and economical aspects of the Ethernet FTTB networks and provides key business performance indicators. The results of a case study for an Ethernet FTTB deployment in Athens (Greece) are presented.","PeriodicalId":241330,"journal":{"name":"2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126246437","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
Wireless synchronous broadband last mile access solutions for multimedia applications in license free frequency spectrums 无线同步宽带最后一英里接入解决方案，用于免许可证频谱的多媒体应用
2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing Pub Date : 2008-07-25 DOI: 10.1109/CSNDSP.2008.4610709
P. Mandl, P. Schrotter, E. Leitgeb
{"title":"Wireless synchronous broadband last mile access solutions for multimedia applications in license free frequency spectrums","authors":"P. Mandl, P. Schrotter, E. Leitgeb","doi":"10.1109/CSNDSP.2008.4610709","DOIUrl":"https://doi.org/10.1109/CSNDSP.2008.4610709","url":null,"abstract":"A dominant percentage of last mile Internet connections within entire Europe are realized with copper cable pairs (POTL) which are limited in bandwidth by cable length (attenuation) and the number of XDSL lines in a telecommunication cable (crosstalk). Exposed users often cannot get state of the art broadband Internet connections for these reasons and in addition also have to share existing bandwidth with other users which can lead to low bitrates. Current trends show a strong demand of synchronous broadband Internet lines for high quality multimedia applications (e.g. VoD, online video communities and video conferencing). This paper will focus on alternative wireless synchronous license exempt optical and radio frequency wireless last mile access technologies and shows advantages and disadvantages between different methods.","PeriodicalId":241330,"journal":{"name":"2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130676502","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
Experimental development and study of Wi-Fi and FSO links Wi-Fi和FSO链路的实验开发和研究
2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing Pub Date : 2008-07-25 DOI: 10.1109/CSNDSP.2008.4610761
J. P. D. Pacheco de Carvalho, H. Veiga, P. Gomes, A. Reis
{"title":"Experimental development and study of Wi-Fi and FSO links","authors":"J. P. D. Pacheco de Carvalho, H. Veiga, P. Gomes, A. Reis","doi":"10.1109/CSNDSP.2008.4610761","DOIUrl":"https://doi.org/10.1109/CSNDSP.2008.4610761","url":null,"abstract":"Wi-Fi, using 2.4 GHz microwaves and IEEE 802.11b/g standards, is mainly applied to the development of outdoor wireless links. In addition, a FSO link is implemented for data and voice communications. Link quality has been tested. Several results are presented and discussed.","PeriodicalId":241330,"journal":{"name":"2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122109985","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
Personal optical wireless communications: LOS/WLOS/DIF propagation model and QOFI 个人无线光通信:LOS/WLOS/DIF传播模型与QOFI
2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing Pub Date : 2008-07-25 DOI: 10.1109/CSNDSP.2008.4610816
M. Bertrand, O. Bouchet, P. Besnard
{"title":"Personal optical wireless communications: LOS/WLOS/DIF propagation model and QOFI","authors":"M. Bertrand, O. Bouchet, P. Besnard","doi":"10.1109/CSNDSP.2008.4610816","DOIUrl":"https://doi.org/10.1109/CSNDSP.2008.4610816","url":null,"abstract":"Personal optical wireless communication POW is a promising solution for increasing the available communication bandwidth within a room. This technology can offer, with line of sight and diffuse propagation, very high-speed communications between portable devices. This paper presents a generic line of sight, wide line of sight (LOS/WLOS) propagation model and a diffuse (DIF) propagation model for the design of wireless optical communications. It also presents a software tool, with these models, offering the possibility to simulate the optic path loss models in a room. This simulation can be shown with furniture and optical wireless equipments in 2D or 3D view.","PeriodicalId":241330,"journal":{"name":"2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129073228","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
A novel method for determining the resonance frequency of PICCs 一种测定PICCs谐振频率的新方法
2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing Pub Date : 2008-07-25 DOI: 10.1109/CSNDSP.2008.4610795
Wei Lin, B. Geck, H. Eul, C. Lanschuetzer, P. Raggam
{"title":"A novel method for determining the resonance frequency of PICCs","authors":"Wei Lin, B. Geck, H. Eul, C. Lanschuetzer, P. Raggam","doi":"10.1109/CSNDSP.2008.4610795","DOIUrl":"https://doi.org/10.1109/CSNDSP.2008.4610795","url":null,"abstract":"The resonance frequency is a very important parameter for the characterization of PICCs. In this paper a new method for measuring the resonance frequency is presented. In spite of the widely used Real{Z} method the new transfer function method assures a well defined constant working state of the PICC during the measurement. Additionally only scalar measurements have to be performed. First the problems of the Real{Z} method are analyzed and then theory and advantages of the new method are presented by analytical calculations and simulations. Then a practical realization of the transfer function method is presented and the quality of the method is proved by measuring the resonance frequencies of passive reference devices and standard PICCs.","PeriodicalId":241330,"journal":{"name":"2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133228956","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
Employing concatenated-FEC to mitigate polarization-sensitivity in all-optical wavelength-conversion 全光波长转换中利用级联fec降低偏振灵敏度
2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing Pub Date : 2008-07-25 DOI: 10.1109/CSNDSP.2008.4610701
A. Tychopoulos, P. Zakynthinos, O. Koufopavlou, H. Avramopoulos
{"title":"Employing concatenated-FEC to mitigate polarization-sensitivity in all-optical wavelength-conversion","authors":"A. Tychopoulos, P. Zakynthinos, O. Koufopavlou, H. Avramopoulos","doi":"10.1109/CSNDSP.2008.4610701","DOIUrl":"https://doi.org/10.1109/CSNDSP.2008.4610701","url":null,"abstract":"Wavelength-conversion is an essential block in building all-optical networks. Currently, all-optical wavelength-conversion can quite efficiently be performed by means of SOA. In this approach however, a significant shortcoming is the high sensitivity of error-performance to the relative polarization of optical-signals, which imposes rigid tuning requirements. To make conversion insensitive to random fluctuations of polarization, we employ a standard outband-FEC method, in combination with a novel inband-FEC method. The latter, called ldquoFOCUSrdquo, is best suited for combating burst-form errors. This particular property of ldquoFOCUSrdquo matches the error-distribution generated by the associated outband-FEC code, when the two are combined in serial-concatenation. We demonstrate the corrective-power of this FEC-concatenation scheme in protecting a 10 Gb/s lightwave-channel, which undergoes wavelength-conversion by means of an all-optical, SOA-based Mach-Zehnder Interferometer (MZI) switch. In this experiment, the MZI switch was purposely misadjusted, in order to increase the polarization sensitivity. We show error-free 10 Gb/s wavelength-conversion and no need for polarization-control before the converter.","PeriodicalId":241330,"journal":{"name":"2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133403574","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
Bandwidth-efficient indoor optical wireless communications with white light-emitting diodes 带宽高效的室内光学无线通信与白光发光二极管
2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing Pub Date : 2008-07-25 DOI: 10.1109/CSNDSP.2008.4610769
J. Grubor, Sebastian Randel, K. Langer, J. Walewski
{"title":"Bandwidth-efficient indoor optical wireless communications with white light-emitting diodes","authors":"J. Grubor, Sebastian Randel, K. Langer, J. Walewski","doi":"10.1109/CSNDSP.2008.4610769","DOIUrl":"https://doi.org/10.1109/CSNDSP.2008.4610769","url":null,"abstract":"With white-light LEDs one can combine lighting and wireless communication functionalities in one source. We investigate feasible transmission rates in a moderate-size office room illuminated with commercially available phosphor-based LEDs. Due to prevalent high signal-to-noise ratios and negligible inter-symbol-interference maximum data rates of 300 Mbit/s are shown to be achievable with the use of pulse amplitude modulation (PAM) or discrete multi-tone modulation (DMT). Also, we present first experiments with white-light LEDs and demonstrate wireless net data rates of up to 101 Mbit/s.","PeriodicalId":241330,"journal":{"name":"2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130147244","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: 79
A new miniaturized LTCC transversal bandpass filter for RF and microwave applications 一种用于射频和微波应用的新型小型化LTCC横向带通滤波器
2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing Pub Date : 2008-07-25 DOI: 10.1109/CSNDSP.2008.4610807
R. Kravchenko, D. Orlenko, M. Stadler
{"title":"A new miniaturized LTCC transversal bandpass filter for RF and microwave applications","authors":"R. Kravchenko, D. Orlenko, M. Stadler","doi":"10.1109/CSNDSP.2008.4610807","DOIUrl":"https://doi.org/10.1109/CSNDSP.2008.4610807","url":null,"abstract":"Actual trend in microwave electronics lies in miniaturization of electronic components with remaining or even improving of its characteristics. A new conception of filter design considering this requirement is presented in the paper. Size reduction is provided using of both LTCC (low temperature cofired ceramic) multilayer technology and system solutions. The filter design is based on transversal and recursive principles which provide easy and flexible design procedure. Characteristics of the filter are not worse then ones of standard resonator filters. The filter can be considered both as a transversal filter and as lumped-element equivalent circuit of a ring resonator with perturbations. Such configuration of the filter provides combination of low insertion loss in passband with high rejection characteristics. As an example, 5 GHz LTCC filter for wireless front-end systems was produced and successfully tested.","PeriodicalId":241330,"journal":{"name":"2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing","volume":"154 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134095071","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
Analytical model of the address auto-configuration protocol LHA in Ad hoc NEtworks Ad hoc网络中地址自动配置协议LHA的分析模型
2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing Pub Date : 2008-07-25 DOI: 10.1109/CSNDSP.2008.4610747
A. Yousef, H. Al-Mahdi, A. Mitschele-Thiel
{"title":"Analytical model of the address auto-configuration protocol LHA in Ad hoc NEtworks","authors":"A. Yousef, H. Al-Mahdi, A. Mitschele-Thiel","doi":"10.1109/CSNDSP.2008.4610747","DOIUrl":"https://doi.org/10.1109/CSNDSP.2008.4610747","url":null,"abstract":"Address auto-configuration process is one of the most essential issues for mobile ad hoc networks (MANETs). Before nodes participate in multi-hops communication, they must be assigned an IP address. Fast assignment, uniqueness, conflicts solving and reuse ability of the IP addresses in MANETs are the main topics of the auto-configuration process. The Logical Hierarchical Addressing protocol (LHA) is designed to achieve fast address assignment and less protocol overhead. The contribution of this paper is to evaluate the performance of the LHA algorithm by developing an analytical model based on the actual number of hops required to obtain an IP address. The proposed analytical model is designed to predict the latency and signalling overhead. The numerical results show that the LHA protocol reduces the latency by 50% and overhead traffic to obtain an IP address by 75% compared to the Token-based protocol.","PeriodicalId":241330,"journal":{"name":"2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing","volume":"807 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123290115","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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