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Estimation of optimum antenna configurations supported by realistic propagation models at 60 GHz
Vasilii Semkin;Martin Jacob;Thomas Kürner;Aimeric Bisognin;Fabien Ferrero;Cyril Luxey;Antti V. Räisänen
The 8th European Conference on Antennas and Propagation (EuCAP 2014)
Year: 2014 | Conference Paper |
Cited by: Papers (3)
In this work, the estimation of suitable antenna configurations for mm-wave communications supported by ray tracing simulations is presented. The influence of human blockage on the propagation channel in the conference room is investigated. Simulations were done for different numbers of persons. By the obtained results we can estimate the best antenna configuration for the specific environment.Show More
Ultra broadband indoor channel measurements and calibrated ray tracing propagation modeling at THz frequencies
Ultra broadband communication systems operated at THz frequencies will require the thorough knowledge of the propagation channel. Therefore, an extensive measurement campaign of 50 GHz wide indoor radio channels is presented for the frequencies between 275 and 325 GHz. Individual ray paths are resolved spatially according to angle of arrival and departure. A MIMO channel is recorded in a 2×2 confi...Show More
Extension and validation of the IEEE 802.11ad 60 GHz human blockage model
Martin Jacob;Sebastian Priebe;Thomas Kürner;Michael Peter;Mike Wisotzki;Robert Felbecker;Wilhelm Keusgen
2013 7th European Conference on Antennas and Propagation (EuCAP)
Year: 2013 | Conference Paper |
Cited by: Papers (7)
This paper presents an extension and a holistic validation of the IEEE 802.11ad 60 GHz human blockage model. In order to validate the modeling methodology, it is compared with real-time broadband radio channel measurements. In addition, the model is extended by the functionality of taking into account multiple persons. Based on the extended model, the impact of multiple persons on the 60 GHz radio...Show More
Fundamental analyses of 60 GHz human blockage
Martin Jacob;Sebastian Priebe;Thomas Kürner;Michael Peter;Mike Wisotzki;Robert Felbecker;Wilhelm Keusgen
2013 7th European Conference on Antennas and Propagation (EuCAP)
Year: 2013 | Conference Paper |
Cited by: Papers (11)
In this paper, fundamental investigations of human shadowing at 60 GHz are presented. Different electromagnetic models are analyzed regarding their accuracy and computional effort. Therefore, different geometrical representations of the human body, namely circular cylinders with different dielectric properties, the dielectric elliptic cylinder, and the so-called multiple knife edge (MKE) model are...Show More
Diffraction measurements at 60 GHz and 300 GHz for modeling of future THz communication systems
T. Kleine-Ostmann;M. Jacob;S. Priebe;R. Dickhoff;T. Schrader;T. Kürner
2012 37th International Conference on Infrared, Millimeter, and Terahertz Waves
Year: 2012 | Conference Paper |
Cited by: Papers (9)
Indoor wireless communication channels will be operated in the 60 GHz band soon and will work at 300 GHz and beyond in the foreseeable future. Although diffraction occurs at a multitude of objects in indoor environments and needs to be considered for reliable propagation simulations, very few work exists on this topic in the mm and sub-mm wave bands. Here, we present measurements of the diffractio...Show More
Interference Investigations of Active Communications and Passive Earth Exploration Services in the THz Frequency Range
Sebastian Priebe;David M. Britz;Martin Jacob;Stephen Sarkozy;Kevin M. K. H. Leong;Jennifer E. Logan;Ben S. Gorospe;Thomas Kurner
At Terahertz (THz) frequencies, passive space-borne Earth exploration services may be interfered by upcoming active communication applications. Aiming for coexistent use of the THz band by both active and passive applications, this paper identifies critical scenarios where interference can possibly occur. Atmospheric attenuation simulations are used along with appropriate propagation models to acc...Show More
Measurement of channel and propagation properties at 300 GHz
T. Kleine-Ostmann;C. Jastrow;S. Priebe;M. Jacob;T. Kürner;T. Schrader
2012 Conference on Precision electromagnetic Measurements
Year: 2012 | Conference Paper |
Cited by: Papers (28)
The constantly growing need for unoccupied and unregulated bandwidth will lead to the extension of operation frequencies of ultrabroadband communication systems into the lower Terahertz frequency range. Here we present first channel measurements at 300 GHz for two simple indoor scenarios, a point-to-point link on a desktop and a connection from a desktop to an access point within an office room. F...Show More
Affection of THz indoor communication links by antenna misalignment
2012 6th European Conference on Antennas and Propagation (EUCAP)
Year: 2012 | Conference Paper |
Cited by: Papers (29)
Antenna misalignment can lead to a severe performance deterioration of wireless THz communication links. In this paper, we propose to model the misalignment as a random process. Based on the misalignment model, Monte Carlo simulations are conducted in order to assess the impact of misalignment on THz communication channels in an office scenario. Ray tracing accounts for correct propagation conditi...Show More
Analyzing human body shadowing at 60 GHz: Systematic wideband MIMO measurements and modeling approaches
Michael Peter;Mike Wisotzki;Miruna Raceala-Motoc;Wilhelm Keusgen;Robert Felbecker;Martin Jacob;Sebastian Priebe;Thomas Kürner
2012 6th European Conference on Antennas and Propagation (EUCAP)
Year: 2012 | Conference Paper |
Cited by: Papers (57)
This paper presents results of a systematic 2×2 MIMO channel measurement campaign, which has been carried out in order to analyze the impact of human body shadowing (HBS) on the 60 GHz wideband channel. A piecewise linear and two analytical models, namely the double knife-edge (DKE) model and a cylinder approach incorporating the uniform theory of diffraction (UTD), are used to approximate and to ...Show More
The impact of antenna directivities on THz indoor channel characteristics
2012 6th European Conference on Antennas and Propagation (EUCAP)
Year: 2012 | Conference Paper |
Cited by: Papers (42)
This article investigates the influence of antenna directivities on the characteristics of THz communication channels. Gain diagrams of various actual antenna types like a horn antenna, an additional lense or a waveguide are measured at 300 GHz and compared to a simplified beam model. Ray tracing simulations are performed in an office room, accounting for realistic propagation conditions. The simu...Show More
Reverberation and Absorption in an Aircraft Cabin With the Impact of Passengers
Jørgen Bach Andersen;Kin Lien Chee;Martin Jacob;Gert Frølund Pedersen;Thomas Kurner
Using a similar approach to that applied in acoustics and in microwave reverberation chambers, a theory of wideband propagation in a closed environment is discussed. Here, a room environment is viewed as a lossy cavity, characterized by diffuse scattering from walls and internal obstacles. For experimental results, measurements from 3 to 8 GHz were performed in a 24 passenger section of an aircraf...Show More
Diffraction in mm and Sub-mm Wave Indoor Propagation Channels
Martin Jacob;Sebastian Priebe;Robert Dickhoff;Thomas Kleine-Ostmann;Thorsten Schrader;Thomas Kurner
Current indoor wireless communication systems are shifting from classical microwave bands towards mm wave frequencies, whereas here the 60 GHz band is of special interest. Future systems are expected to work at even higher carrier frequencies in the sub-mm band beyond 300 GHz. In indoor wave propagation channels of such systems, diffraction occurs at a multitude of objects and hence must be consid...Show More
Performance Evaluation of Beamforming Solutions for mmWave Wireless Systems
Florian Perget;Daniela Dragomirescu;Martin Jacob;Thomas Kurner;Cicero Vaucher;Robert Plana
2011 IEEE Global Telecommunications Conference - GLOBECOM 2011
Year: 2011 | Conference Paper |
New ultra high data rate systems in the 60 GHz band, especially those targeting high definition video indoor transmission, have a strong requirement for Quality of Service to prevent link outage, and this has to be performed at the MAC level. This paper describes a new simulation platform for these ultra high data rate wireless systems. This new tool models the complete wireless system, including ...Show More
Performance evaluation of 60 GHz WLAN antennas under realistic propagation conditions with human shadowing
Martin Jacob;Anton de Graauw;Maristella Spella;Pablo Herrero;Sebastian Priebe;Joerg Schoebel;Thomas Kürner
2011 XXXth URSI General Assembly and Scientific Symposium
Year: 2011 | Conference Paper |
Cited by: Papers (7)
In this paper, the evaluation of different 60 GHz WLAN antenna designs is presented. Based on ray tracing and human blockage the radio propagation in a living room scenario is modeled. Then simulated 3D antenna patterns of conventional and smart antennas are linked to the radio channel data. The performance of the antennas is compared in terms of the coverage probability within the living room.Show More
Basic concepts for the modeling and correction of GNSS multipath effects using ray tracing and software receivers
2011 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications
Year: 2011 | Conference Paper |
Cited by: Papers (7)
Satellite positioning accuracy is degraded by multipath propagation between satellite and the receiver. In this paper we give an overview of a new approach to model and correct this impairment, and present some preliminary results. High accuracy 3D laser scanning is utilized to model the environment. This gives an accurate basis for the characterization of the satellite to earth radio channel by u...Show More
Diffuse Scattering From Rough Surfaces in THz Communication Channels
Christian Jansen;Sebastian Priebe;Christoph Moller;Martin Jacob;Hanno Dierke;Martin Koch;Thomas Kurner
Recent years have seen a tremendous increase in the demand for wireless bandwidth. To support this demand by innovative and resourceful use of technology, future communication systems will have to shift towards higher carrier frequencies. Due to the tight regulatory situation, frequencies in the atmospheric attenuation window around 300 GHz appear very attractive to facilitate an indoor, short ran...Show More
A ray tracing based stochastic human blockage model for the IEEE 802.11ad 60 GHz channel model
Martin Jacob;Sebastian Priebe;Alexander Maltsev;Artyom Lomayev;Vinko Erceg;Thomas Kürner
Proceedings of the 5th European Conference on Antennas and Propagation (EUCAP)
Year: 2011 | Conference Paper |
Cited by: Papers (16)
This paper presents the human blockage model based on the authors' work in the framework of the IEEE 802.11ad 60 GHz channel model development. The human blockage model combines ray tracing simulations, an electromagnetic diffraction model and a random walk model for human movement. In addition to the stochastic model the impact of human blockage on wireless communications is analyzed.Show More
Non-specular scattering modeling for THz propagation simulations
Sebastian Priebe;Martin Jacob;Christian Jansen;Thomas Kürner
Proceedings of the 5th European Conference on Antennas and Propagation (EUCAP)
Year: 2011 | Conference Paper |
Cited by: Papers (11)
In this paper, we present an approach for the modeling of non-specular scattering at rough surfaces in the THz frequency range by means of the Kirchhoff scattering theory. The practical implementation of the Kirchhoff model in a ray tracing algorithm is discussed. Ray tracing simulation results are compared with measurements for the purpose of validation. The size of the relevant active scattering...Show More
Polarization investigation of rough surface scattering for THz propagation modeling
Proceedings of the 5th European Conference on Antennas and Propagation (EUCAP)
Year: 2011 | Conference Paper |
Cited by: Papers (5)
This paper presents the modeling of both coherent and incoherent scattering processes from rough surfaces at THz frequencies with the focus on polarization aspects. In a ray tracing algorithm, coherent scattering is implemented based on the Kirchhoff theory whereas a perturbation approach is used for the incoherent contribution. Geometrical depolarization is accounted for by means of the Jones cal...Show More
Channel and Propagation Measurements at 300 GHz
Sebastian Priebe;Christian Jastrow;Martin Jacob;Thomas Kleine-Ostmann;Thorsten Schrader;Thomas Kürner
Ultrabroadband Terahertz communication systems are expected to help satisfy the ever-growing need for unoccupied bandwidth. Here, we present ultra broadband channel measurements at 300 GHz for two distinct indoor scenarios, a point-to-point link of devices on a desktop and the connection of a laptop to an access point in the middle of an office room. In the first setup, measurements are taken with...Show More
A comparison of indoor channel measurements and ray tracing simulations at 300 GHz
S. Priebe;M. Jacob;C. Jastrow;T. Kleine-Ostmann;T. Schrader;T. Kürner
35th International Conference on Infrared, Millimeter, and Terahertz Waves
Year: 2010 | Conference Paper |
Cited by: Papers (37)
This paper presents ultra broadband channel measurements in a typical office room. The measured channel impulse response and transfer function is compared to a ray tracing simulation performed with a 3D model of the scenario. Additionally, we show reflection losses of the building materials in the room which are required as input data for the ray tracing algorithm.Show More
A dynamic 60 GHz radio channel model for system level simulations with MAC protocols for IEEE 802.11ad
IEEE International Symposium on Consumer Electronics (ISCE 2010)
Year: 2010 | Conference Paper |
This paper presents a dynamic 60 GHz radio channel model for system level simulations with MAC Protocols. It is based on radio propagation measurements investigating the influence of moving humans on the 60 GHz channel, which has been performed in the framework of IEEE 802.11ad 60 GHz WLAN standardization.Show More
Reflection and transmission properties of building materials in D-band for modeling future mm-wave communication systems
Proceedings of the Fourth European Conference on Antennas and Propagation
Year: 2010 | Conference Paper |
Cited by: Papers (1)
In this paper, wideband reflection and transmission properties of different materials are presented for a frequency range between 110 and 135 GHz. In particular, bistatic reflection profiles and transmission losses are measured for concrete, medium density fiberboard (MDF), gypsum plasterboard and double pane window glass samples. These measurements are compared with simulation results derived usi...Show More
Comparison of in-car UWB and 60 GHz channel measurements
Proceedings of the Fourth European Conference on Antennas and Propagation
Year: 2010 | Conference Paper |
Cited by: Papers (1)
A comparison of ultra-wideband (UWB) and 60 GHz channels inside a car is carried out in this paper. Measurements with a vector network analyzer (VNA) in the frequency bands of 5–8.5 GHz and 67–70.5 GHz have been carried out and the large-scale and small-scale parameters have been investigated. The results are shown for different antenna configurations and polarizations as well as for an empty car ...Show More
A Systematic Approach for UWB Channel Modeling in Aircraft Cabins
2009 IEEE 70th Vehicular Technology Conference Fall
Year: 2009 | Conference Paper |
Cited by: Papers (3)
The Saleh-Valenzuela multipath channel model (SVmodel) is often used for the modeling of communication channels in confined environments . The model assumes multipath components (MPC) arriving at the receiver in clusters. Instead of identifying clusters from the power delay profile (PDP) via visual inspection as proposed in , this paper proposes a systematic algorithm for cluster identification in...Show More
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