{"title":"Analysis of Continental Fog Micro-physical Parameters: Effect of PSA on Optical Attenuation","authors":"Misha Ghauri, S. Muhammad, E. Leitgeb","doi":"10.1109/ConTEL.2019.8848506","DOIUrl":"https://doi.org/10.1109/ConTEL.2019.8848506","url":null,"abstract":"The measurement campaign held in Prague, over a span of 5 months, have recorded the optical attenuation caused by fog particles along the corresponding specific value of particle surface area (PSA). This paper aims to empirically correlate optical attenuation with PSA at operating wavelength of 830 nm and 1550 nm. Simple linear regression model using the best fit method of least squares is used to minimize the error for extraction of optical attenuation from PSA. Empirical relations have been derived to predict optical attenuation caused by fog particles through the measured data of PSA. Linear relationship between optical attenuation and PSA has been established through the analysis of the measured data and the derived equations.","PeriodicalId":182429,"journal":{"name":"2019 15th International Conference on Telecommunications (ConTEL)","volume":"129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115964415","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}
I. Miladinovic, Sigrid Schefer-Wenzl, Heimo Hirner
{"title":"Curriculum of a Telecommunications Study Program—A Matter of Trends?","authors":"I. Miladinovic, Sigrid Schefer-Wenzl, Heimo Hirner","doi":"10.1109/ConTEL.2019.8848529","DOIUrl":"https://doi.org/10.1109/ConTEL.2019.8848529","url":null,"abstract":"Several trends have shaped telecommunications industry over the past few years and are still changing it today. Most prominent examples like Software Defined Networks, Network Function Virtualization, Artificial Intelligence, Internet of Things, and 5G show all in the same direction—a growing number of connected devices and increasing importance of the software. Besides that, our industry partners are constantly complaining on missing professional skills of the graduates of engineering studies. Telecommunications related study programs, however, frequently do not follow these trends, still containing a significant number of ECTS credits in electronic and hardware related courses. This was also the case with our Bachelor study program Information Technologies and Telecommunications, and therefore we decided to make some major adjustments in the curriculum. In this paper we describe these changes and the reasons for them, and also share our first experiences with the new curriculum based on the students’ feedback.","PeriodicalId":182429,"journal":{"name":"2019 15th International Conference on Telecommunications (ConTEL)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125938952","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":"Evaluation of TETRA SDS Performance and GPS Accuracy in Real-World Scenarios","authors":"Martina Umlauft, Christian Raffelsberger","doi":"10.1109/ConTEL.2019.8848565","DOIUrl":"https://doi.org/10.1109/ConTEL.2019.8848565","url":null,"abstract":"Terrestrial Trunked Radio (TETRA) is a communication system for public safety featuring voice, Short-Data-Service (SDS), e.g., for GPS updates, and data communications. This paper presents measurement results concerning GPS accuracy and SDS performance of several real-world scenarios using TETRA in trunked mode. In particular, we considered intra-cell communication, inter-cell communication, and stationary as well as mobile use cases. Besides lab settings, we also performed two different field tests of semi-realistic and realistic first responder drills. SDS delay was satisfactory in all scenarios but GPS accuracy of common TETRA handheld radios turned out to be limited, especially compared with current Android devices. This is yet another argument in favor of complementing the use of TETRA with other broadband technologies like LTE/5G, which would then not only enable multimedia communications but also give access to more accurate positioning.","PeriodicalId":182429,"journal":{"name":"2019 15th International Conference on Telecommunications (ConTEL)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122795122","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}