Pub Date : 2020-11-09DOI: 10.1109/ISTT50966.2020.9279345
Jochen Stellwagen, M. Deegener, M. Kuhn
Beside E-mobility and autonomous driving, the connectivity of vehicles is the major topics in research activities in the automotive industry, today. The ITS-G5 standards family describes a Car-to-Car communication solution for Europe, based on the IEEE 802.11p WIFI-standard using 7 communication channels at 5.9 GHz. In this paper we propose an idea of location-based channel-selection. A vehicle selects the channel depending on its position and an associated virtual radio cell. The location-based channel usage shall reduce the local channel throughput and shall allow for a content- and situation dependent choice of the dissemination area. A simulation of urban traffic was implemented to create a significant channel congestion caused by a high number of moving vehicles. For comparison to the proposed approach, two other setups were implemented, an approach without throughput control mechanism and one with a Decentralized Congestion Control (DCC) algorithm.
{"title":"Location-Based Multichannel-Usage for ITS-G5 Car-to-Car Communication","authors":"Jochen Stellwagen, M. Deegener, M. Kuhn","doi":"10.1109/ISTT50966.2020.9279345","DOIUrl":"https://doi.org/10.1109/ISTT50966.2020.9279345","url":null,"abstract":"Beside E-mobility and autonomous driving, the connectivity of vehicles is the major topics in research activities in the automotive industry, today. The ITS-G5 standards family describes a Car-to-Car communication solution for Europe, based on the IEEE 802.11p WIFI-standard using 7 communication channels at 5.9 GHz. In this paper we propose an idea of location-based channel-selection. A vehicle selects the channel depending on its position and an associated virtual radio cell. The location-based channel usage shall reduce the local channel throughput and shall allow for a content- and situation dependent choice of the dissemination area. A simulation of urban traffic was implemented to create a significant channel congestion caused by a high number of moving vehicles. For comparison to the proposed approach, two other setups were implemented, an approach without throughput control mechanism and one with a Decentralized Congestion Control (DCC) algorithm.","PeriodicalId":345344,"journal":{"name":"2020 IEEE 5th International Symposium on Telecommunication Technologies (ISTT)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133694025","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}
Pub Date : 2020-11-09DOI: 10.1109/ISTT50966.2020.9279390
Hongmei Fan
With the rapid development of short range devices (SRD), it becomes critical to limit the electromagnetic radiation from the transmitters inside them. For both inductive loop coil transmitters and electric field transmitters, the conversion from magnetic field strength to radiated power in both near field and far field regions are discussed. Three power concepts, total radiated power (TRP), effective isotropic radiated power (EIRP) and effective radiated power (ERP) are clarified. Two concerns in current European Telecommunications Standards Institute (ETSI) and Australian / New Zealand StandardTM (AS/NZS) standards regarding SRD transmitter magnetic field strength or ERP / EIRP limits in the frequency range of 9 kHz to 30 MHz are addressed, formulae to convert from magnetic field strength to EIRP are derived.
{"title":"How to Convert from Magnetic Field Strength Measurements to Radiated Power for Short Range Device Transmitters","authors":"Hongmei Fan","doi":"10.1109/ISTT50966.2020.9279390","DOIUrl":"https://doi.org/10.1109/ISTT50966.2020.9279390","url":null,"abstract":"With the rapid development of short range devices (SRD), it becomes critical to limit the electromagnetic radiation from the transmitters inside them. For both inductive loop coil transmitters and electric field transmitters, the conversion from magnetic field strength to radiated power in both near field and far field regions are discussed. Three power concepts, total radiated power (TRP), effective isotropic radiated power (EIRP) and effective radiated power (ERP) are clarified. Two concerns in current European Telecommunications Standards Institute (ETSI) and Australian / New Zealand StandardTM (AS/NZS) standards regarding SRD transmitter magnetic field strength or ERP / EIRP limits in the frequency range of 9 kHz to 30 MHz are addressed, formulae to convert from magnetic field strength to EIRP are derived.","PeriodicalId":345344,"journal":{"name":"2020 IEEE 5th International Symposium on Telecommunication Technologies (ISTT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131227924","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}
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