{"title":"A New Remote Fiber Test System for Optical Networks","authors":"K. Zmak, M. Bosiljevac, P. Bašić, Z. Šipuš","doi":"10.1109/ELMAR.2006.329586","DOIUrl":"https://doi.org/10.1109/ELMAR.2006.329586","url":null,"abstract":"A novel remote fiber testing system (RFTS) for error detection in optical networks in presented in this paper. The proposed measurement system is applicable to access and local optical networks for which the standard RFTS is too expensive. The basic idea lies in replacing expensive optical switches with more affordable optical power splitters. Consequently, all fibers are simultaneously tested and therefore the new method for error detection is developed. The experimental results demonstrate the possibilities of the new testing system. Furthermore, we have demonstrated that the number of averaging needed in the measurement procedure can be reduced by a factor of 10 by using an appropriate signal-processing algorithm","PeriodicalId":430777,"journal":{"name":"Proceedings ELMAR 2006","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128203406","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}
{"title":"Benefits of MIMO Systems in Practice: Increased Capacity, Reliability and Spectrum Efficiency","authors":"Ana Katalinic, R. Nagy, R. Zentner","doi":"10.1109/ELMAR.2006.329563","DOIUrl":"https://doi.org/10.1109/ELMAR.2006.329563","url":null,"abstract":"This work deals with multiple input multiple output (MIMO) systems in current and future wireless telecommunications systems. Advantages of adaptive antenna arrays, diversity techniques and waterfilling techniques are described. Possibilities of MIMO systems for the increase of channel capacity, reliability and spectrum efficiency is presented","PeriodicalId":430777,"journal":{"name":"Proceedings ELMAR 2006","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128208403","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}
{"title":"Front-end Module for GNSS Software Receiver","authors":"J. Spacek, P. Puričer","doi":"10.1109/ELMAR.2006.329551","DOIUrl":"https://doi.org/10.1109/ELMAR.2006.329551","url":null,"abstract":"The topic of the paper is focused on the design and implementation of the radio front-end part for experimental GNSS software receiver developed at the Department of Radio Engineering of the Czech Technical University in Prague. The receiver is designed for the processing of signals of present and future global navigation satellite systems, including GPS, GLONASS and Galileo. For the biggest possible versatility, the modular architecture and software defined radio (SDR) concept were chosen. The front-end unit consists of three independent channels with the bandwidth of 24 MHz each that use a single conversion super-heterodyne concept with intermediate frequency 140 MHz. The front-end provides down converted analogue signal to DSP unit represented by FPGA device with two embedded PowerPC cores. The paper also provides comparison of the front-end of experimental receiver with lot manufacture case","PeriodicalId":430777,"journal":{"name":"Proceedings ELMAR 2006","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122377510","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}
{"title":"Multiscale Edge Detector","authors":"D. Heric, B. Potocnik","doi":"10.1109/ELMAR.2006.329509","DOIUrl":"https://doi.org/10.1109/ELMAR.2006.329509","url":null,"abstract":"The purpose of this paper is to introduce an novel edge detector using directional wavelet transform and signal registration. Directional wavelet transform decomposes an image into four-dimensional space which augments the image by the scale and directional information. We show the directional information significantly improves edge detection in noisy images in comparison with the classical multiscale edge detector, and enables more reliable edge tracing along an object boundary. Edge detection is based on the modulus maximum principle with an adaptive threshold whose value is calculated via maximum entropy measure. Edge tracing is done with signal alignment between neighbour edges","PeriodicalId":430777,"journal":{"name":"Proceedings ELMAR 2006","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127861863","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}
{"title":"Minimizing Power Consumption of the DVB-H Receiver","authors":"S. Lončarić, S. Grgić, B. Zovko-Cihlar","doi":"10.1109/ELMAR.2006.329573","DOIUrl":"https://doi.org/10.1109/ELMAR.2006.329573","url":null,"abstract":"Although the DVB-T transmission system has proven its ability to serve fixed, portable and mobile terminals, handheld terminals (defined as small and lightweight battery powered devices) require specific set of features from the transmission system serving them. Reduced average power consumption of the receiver is one of them. This paper contains some methods specific to DVB-H transmission system used to achieve this goal","PeriodicalId":430777,"journal":{"name":"Proceedings ELMAR 2006","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121078973","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}
{"title":"Multicarrier Modulation in Advanced Wireless Communication Systems","authors":"D. Nogulic, M. Gadze, A. Jankovic","doi":"10.1109/ELMAR.2006.329543","DOIUrl":"https://doi.org/10.1109/ELMAR.2006.329543","url":null,"abstract":"The selection of appropriate multiple access technology is the main issue in design and development of beyond 3G (B3G) wireless systems. This article considers orthogonal frequency-division multiplexing (OFDM) scheme as a key technique to implement in next-generation mobile systems. The introduction of OFDM multicarrier technique in new hybrid multiple access technologies should provide a solution for problems limiting current mobile systems, such as sensitivity to multipath conditions, poor bandwidth efficiency, interference and capacity issues, high signal processing complexity and inadequate performance of high-speed data transmission. The theoretical background, characteristics and practical applications of some of the most important multiple access combinations will be reviewed. Finally, the implementation of OFDM in existing single carrier 3G systems and coexistence will be shortly addressed in conclusion","PeriodicalId":430777,"journal":{"name":"Proceedings ELMAR 2006","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115021304","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}
{"title":"Picture Format Conversion for TV Projection","authors":"T. Lukičić, S. Grgic, M. Grgic","doi":"10.1109/ELMAR.2006.329506","DOIUrl":"https://doi.org/10.1109/ELMAR.2006.329506","url":null,"abstract":"For TV projection of film material it is necessary to correct picture for format differences. TV projection needs to achieve closest possible artistic atmosphere of original film image. Different balance of picture elements, because of the format correction process, results with different artistic atmosphere of the projected picture. There are different approaches to correction process which depend on film frame format and for best results need to be planed during the film making. Cinema projection does not affect balance of the picture elements and projected picture quality depends on film formats, which are compared in this paper","PeriodicalId":430777,"journal":{"name":"Proceedings ELMAR 2006","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125760430","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}
{"title":"Multicamera Systems in the Moving Body Recognition","authors":"A. Prochazka, M. Kubíček, A. Pavelka","doi":"10.1109/ELMAR.2006.329511","DOIUrl":"https://doi.org/10.1109/ELMAR.2006.329511","url":null,"abstract":"The contribution presents the process of the space localization of the moving object using a multicamera system, possible remote data transmission through communication links and image acquisition problems. The moving body recognition and its mathematical modelling including spline interpolation, of its trajectory in the three-dimensional space form the main part of the paper. Final results are presented in the computer environment of virtual reality allowing the detail study of the whole system that can represent an engineering or a biomedical process","PeriodicalId":430777,"journal":{"name":"Proceedings ELMAR 2006","volume":"9 12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130122066","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}
{"title":"PMD Measurements in Telecom Networks","authors":"I. Jurdana, S. Z. Pilinsky, B. Batagelj","doi":"10.1109/ELMAR.2006.329588","DOIUrl":"https://doi.org/10.1109/ELMAR.2006.329588","url":null,"abstract":"PMD measurement methods are listed. Interferometric measurement method is described in detail. Several PMD measurements on Croatian Telecom optical links are given. Measurement data analysis encourages the use of proposed links on 10 Gb/s","PeriodicalId":430777,"journal":{"name":"Proceedings ELMAR 2006","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117225157","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}
{"title":"Architecture of IP Multimedia Subsystem","authors":"M. Koukal, R. Bestak","doi":"10.1109/ELMAR.2006.329576","DOIUrl":"https://doi.org/10.1109/ELMAR.2006.329576","url":null,"abstract":"IP multimedia subsystem (IMS) is standardized network architecture for telecom operators that want to provide mobile and fixed multimedia services. IMS-enabled networks provide access to these services from both IP networks and circuit-switched PSTN/PLMNs. This paper describes the IMS architecture and explains its benefits. It concentrates on the main IMS system components and briefly summarizes their key system functions. However, the IMS is a rapidly evolving standard and modifications to the IMS architecture are envisaged. This paper provides a base for future research and work in this domain","PeriodicalId":430777,"journal":{"name":"Proceedings ELMAR 2006","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132740555","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}
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
