| 1. |
- Eriksson, Kristoffer, et al.
(författare)
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Globally Optimal Resource Allocation for Achieving Maximum Weighted Sum Rate
- 2010
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Ingår i: Proceedings of the IEEE Global Communications Conference (GLOBECOM). - 9781424456376 - 9781424456369 ; , s. 1-6
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Konferensbidrag (refereegranskat)abstract
- We establish a general optimization framework for joint resource allocation and interference mitigation. By utilizing axiomatic interference functions, our problem formulation is very general and includes many problems as special cases. We consider the sum rate maximization problem, which is known to be NP hard. It is shown that due to the structural model of the interference function, the joint optimization of powers and adaptive receive strategies ends up with the optimization solely with respect to powers. This facilitates our formulation of the problem under consideration as a problem of difference of convex functions (DC). Based on this DC representation, we employ a prismatic branch and bound algorithm to find a global optimum.
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| 2. |
- Fresia, Maria, et al.
(författare)
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Use case characterization, KPIs and preferred suitable frequency ranges for future 5G systems between 6 GHz and 100 GHz
- 2015
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- In this deliverable use cases and KPIs of interest for mmMAGIC are characterized. Eight usecases suitable for 5G systems operating in the range 6-100GHz are identified in terms ofrequirements. In particular, the following use cases are analyzed: Media on demand; Cloudservices; Dense urban society with distributed crowds; Smart offices; Immersive 5G earlyexperience in targeting hot spots; 50+Mbps everywhere; Moving hot spots; Tactileinternet/video augmented robotic control and remote-robot manipulation surgery. For each ofthe use cases, the more critical KPIs are identified and the gap from the current technologyis also described.An analysis of frequency ranges for future 5G systems between 6 GHz and 100 GHz is reported. A frequency assessment study is conducted in order to compare the frequency ranges for the suitability of delivering key KPIs.
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| 3. |
- Karabin, Marcin, et al.
(författare)
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3D Cadastre in the Case of Engineering Objects, such as Bridges and Road Viaducts
- 2021
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Ingår i: Proceedings 7th International FIG Workshop on 3D Cadastres. - Copenhagen, Denmark : International Federation of Surveyors (FIG). ; , s. 19-36
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- At present, the implementation of cadastral registration of transport investments (such as railway lines on bridges and on viaducts, roads on viaducts, etc.) is performed in the so-called "layer" system. This means that many objects are constructed at different levels (layers) within the space of a given parcel. Several parties may be interested in developing certain fragments of the parcel space; each of them is interested in acquiring rights only to a specified part of the parcel (its specified layer), in which given investment is implemented by that party. The legal conditions binding in many countries do not allow for implementation of such type investments within the space of a someone else's cadastral parcels, based on the ownership right. This is due to the fact, in accordance with the "superficies solo cedit" rule applicable in many EU countries, the ownership right extends above and below the parcel space and cadastral systems do not allow for vertical division of a real property. The conventional 2D cadastre, which does not allow vertical division of the parcel space, forces an investor to buy a whole parcel or to get other rights which allows using a specified space of someone else's parcel, such as easiment rights. Buying of an entire parcel in which space bridges and road viaducts investments will be performed and not being able to divide the land space vertically makes it practically impossible to sell the parcel under a viaduct because following the rule above the viaduct is part of the land parcel. Therefore, the space is not optimally utilised. The easement right has some disadvantages, as it cannot be encumbered with a mortgage; therefore it is not the basis of crediting a given investment. The 3D cadastre allows delineating 3D parcels (from the space of existing 2D parcels) that cover specified fragments of the space and to relate ownership rights to those delineated fragments. Within a 3D cadastre system, such objects can be registered as separate cadastral objects. This allows for the implementation of a line investment in the above-ground space in a flexible way, i.e. it is possible to get financing of an investment based on the mortgage charge of a 3D property and market transactions of the remaining space after delineation of the 3D parcel, covering the bridge or viaduct. This paper focuses on approaches to registration of real property rights in the case of engineering objects, such as bridges and road viaducts, in different EU countries: Austria, Bulgaria, Czech Republic, Croatia, Greece, Poland, Slovenia and Sweden.The authors review the current solutions for the registration of engineering objects in the cadastre, including its effectiveness in ensuring appropriate property rights to construct and exploit such objects, and make a comparison between the countries.
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| 4. |
- Karabin, Marcin, et al.
(författare)
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Layer approach to ownership in 3D cadastre in the case of underground tunnels
- 2020
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Ingår i: Land use policy. - : Elsevier. - 0264-8377 .- 1873-5754. ; 98
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Tidskriftsartikel (refereegranskat)abstract
- The paper focuses on approaches to the registration of real property rights in the case of underground or subway tunnels in different EU countries: Austria, Bulgaria, Czech Republic, Croatia, Greece, Poland, Slovenia, and Sweden. The authors conducted analysis on the registration of rights to subway tunnels in the chosen countries, including its effectiveness in ensuring appropriate property rights to construct and exploit tunnels. Special attention was given to limitations related to the lack of legal provisions vertically dividing space, i.e. into layers, and referring to the ownership right to the layers. Benefits which might be achieved by the introduction of a 3D real property subdivision were pointed out. The analysis of the available data concerning the geometry of subway tunnels in particular countries was presented. The authors tried to answer the question whether the accessible data concerning the geometry of subway tunnels allows to generate a 3D geospatial model of a constructed object, and to specify the space which should be determined as a 3D parcel in the 3D real property cadastre, for the purpose of registering property rights for the object (the tunnel).
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| 5. |
- Karipidis, Eleftherios, 1978-, et al.
(författare)
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Transmit Beamforming for Inter-Operator Spectrum Sharing
- 2011
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Ingår i: Proceedings of the Future Network and Mobile Summit Conference.
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Konferensbidrag (refereegranskat)abstract
- We study the nonorthogonal spectrum sharing scenario, in which coexisting transmitters of different operators concurrently utilize the same frequency band. The transmitters (and possibly the receivers) are equipped with multiple antennas. In EU FP7 project SAPHYRE, we propose various transmit beamforming techniques to manage the interference in the physical layer. We show that operating points that are more efficient than orthogonal spectrum sharing can be reached, when the operators cooperatively design their beamforming vectors to minimize the interference.
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| 6. |
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| 7. |
- Kitsakis, Dimitrios, et al.
(författare)
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3D Cadastres Best Practices, Chapter 1: Legal foundations
- 2018
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Ingår i: FIG Congress 2018. - Copenhagen : International Federation of Surveyors, FIG. - 9788792853783
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- The concepts of three-dimensional (3D) real property have been the subject of increased interest in land use management and research since the late ‘90s. Literature provides various examples of extensive research towards 3D Cadastres as well as those that are already implementing 3D cadastral systems. However, in most countries the legal aspects of 3D real property and its incorporation into 3D cadastral systems have not been so rigorously examined. This paper compares and discusses 3D property concepts in 15 cadastral jurisdictions, based on the authors’ national experience, covering Europe, North and Latin America, Middle East and Australia. Each of the legal system in these cadastral jurisdiction are based on different origins of Civil Law, including German, Napoleonic and Scandinavian Civil Law, which can prove useful to research in other Civil Law jurisdictions interested in introducing 3D cadastral systems. These jurisdictionsare at different stages of introducing and implementing a 3D cadastral system. This contributes to the detection of the 3D real property concepts that apply as well as deficiencies that prohibit introduction of 3D cadastral systems, while highlighting challenges that may have not yet surfaced in individual jurisdictions. This paper aims to present the different legal concepts regarding 3D real property in the examined countries, focusing on the characteristic features of cadastral objects described as 3D within each country’s legal and cadastral framework. The analysis of the case studies revealed that the countries are on different stages of 3D Cadastral implementation, starting from countries with operational 3D cadastral systems, to others where there is yet no interest in introducing a 3D cadastral system. This paper presents the nature of 3D cadastral objects in each country, as well as differences in the regulatory framework regarding definition, description and registration. The paper continues the legal workshop discussions of the 4th International Workshop on 3D Cadastres in Dubai 2014 by analysing the legal concepts of 3D cadastres in the above-mentioned countries. The outcome is an overview and discussion of existing concepts of 3D property describing their similarities and differences in use, focusing on the legal framework of 3D cadastres. The article concludes by presenting a possible way forward and identifies what further research is needed which can be used to draft national and international research proposals and form legislative amendments towards introduction of national 3D cadastral systems.
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| 8. |
- Kitsakis, Dimitrios, et al.
(författare)
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3D Real Property Legal Concepts and Cadastre : A Comparative Study of Selected Countries to Propose a Way Forward
- 2016
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Ingår i: Proceedings of the 5th International Workshop on 3D Cadastre. - : International Federation of Surveyors. - 9788792853479 - 9788792853493 ; , s. 1-24
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- The concepts of three-dimensional (3D) real property have been the subject of increased interest in land use management and research since the late ‘90s while literature provides various examples of extensive research towards 3D Cadastres as well as already implementing 3D cadastral systems. However, in most countries the legal aspects of 3D real property and its incorporation into 3D cadastral systems have not been so rigorously examined. This paper compares and discusses 3D property concepts in six selected countries: Austria, Brazil, Croatia, Greece, Poland and Sweden, based on the authors’ national experience. Each of these countries’ legal system is based on different origins of Civil Law, including German, Napoleonic and Scandinavian Civil Law, which can prove useful to research in other Civil Law jurisdictions interested in introducing 3D cadastral systems. Selected countries are on different stages of introducing and implementing a 3D cadastral system; this may contribute to the detection of the main 3D real property concepts that apply as well as deficiencies and malfunctions that prohibit introduction of 3D cadastral systems, highlighting challenges that may have not yet surfaced. This paper aims to present the different legal concepts regarding 3D real property in the examined countries, focusing on the characteristic features of cadastral objects described as 3D within each country’s legal and cadastral framework. The analysis of the case studies revealed that the countries are on different stages of 3D Cadastre implementation, starting from countries with operational 3D cadastral systems, to others where there is yet no interest in introducing a 3D cadastral system. 3D cadastral objects in each country are presented, as well as differences in the regulatory framework regarding definition, description and registration. The paper continues the legal workshop discussions of the 4th International Workshop on 3D Cadastres in Dubai 2014 by analysing the legal concepts of 3D cadastres in the above mentioned countries. The outcome is an overview and discussion of existing concepts of 3D property describing their similarities and differences in use, focusing on the legal framework of 3D cadastres. The article concludes by presenting a possible way forward and identifies what further research is needed which can be used to draft national and international research proposals and form legislative amendments towards introduction of national 3D cadastral systems.
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| 9. |
- Kitsakis, Dimitrios, et al.
(författare)
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Chapter 1. Legal Foundations
- 2018
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Ingår i: Best Practices 3D Cadastres - Extended version. - Copenhagen, Denmark : International Federation of Surveyors. - 9788792853646 ; , s. 1-66
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Bokkapitel (refereegranskat)abstract
- The concepts of three-dimensional (3D) real property have been the subject of increased interest in land use management and research since the late ‘90s.Literature provides various examples of extensive research towards 3D Cadastres as well as those that are alreadyimplementing3D cadastral systems. However, in most countries the legal aspects of 3D real property and its incorporation into 3D cadastral systems have not been so rigorously examined.This paper compares and discusses 3D property concepts in 15 cadastral jurisdictions, based on the authors’ national experience, covering Europe, North and Latin America, Middle East and Australia. Each of the legal system in these cadastral jurisdiction arebased on different origins of Civil Law, including German, Napoleonic and Scandinavian Civil Law, which can prove useful to research in other Civil Law jurisdictions interested in introducing 3D cadastral systems. These jurisdictionsare atdifferent stages of introducing and implementing a 3D cadastral system.This contributesto the detection of the 3D real property concepts that apply as well as deficiencies that prohibit introduction of 3D cadastral systems,whilehighlighting challenges that may have not yet surfacedin individual jurisdictions. This paper aims to present the different legal concepts regarding 3D real property in the examined countries, focusing on the characteristic features of cadastral objects described as 3D within each country’s legal and cadastral framework. The analysis of the case studies revealed that the countries are on different stages of 3D Cadastralimplementation, starting from countries with operational 3D cadastral systems, to others where there is yet no interest in introducing a 3D cadastral system.This paper presents the nature of 3D cadastral objects in each country, as well as differences in the regulatory framework regarding definition, description and registration. The paper continues the legal workshop discussions of the 4th International Workshop on 3D Cadastres in Dubai 2014 by analysing the legal concepts of 3D cadastres in the above-mentioned countries. The outcome is an overview and discussion of existing concepts of 3D property describing their similarities and differences in use, focusing on the legal framework of 3D cadastres. The article concludes by presenting a possible way forward and identifies what further research is needed which can be used to draft national and international research proposals and form legislative amendments towards introduction of national 3D cadastral systems.
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| 10. |
- Kitsakis, Dimitrios, et al.
(författare)
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Chapter 1. Legal Foundations
- 2018
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Ingår i: Best Practices 3D Cadastres - Printed version. - Copenhagen, Denmark : International Federation of Surveyors. - 9788792853844 - 9788792853837 ; , s. 1-18
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- The concepts of three-dimensional (3D) real property have been the subject of increasedinterest in land use management and research since the late ‘90s while literatureprovides various examples of extensive research towards 3D Cadastres as well asalready implementing 3D cadastral systems. However, in most countries the legal aspectsof 3D real property and its incorporation into 3D cadastral systems have not beenso rigorously examined.This chapter compares and discusses 3D property concepts in fifteen selected countries,based on the authors’ national experience, covering Europe, North and LatinAmerica, Middle East and Australia.
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