Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Ziolkowski, Cezary"'
Autor:
Kelner, Jan M., Ziolkowski, Cezary
Publikováno v:
Proceedings of 2018 12th European Conference on Antennas and Propagation (EuCAP), London, UK, 9-13.04.2018., pp. 1-4
Emerging telecommunication technologies like 5G, green communications, and massive MIMO contribute to the use of directional antennas and beamforming. For this reason, modern propagation models should consider directional antennas with different beam
Externí odkaz:
http://arxiv.org/abs/1803.09605
Publikováno v:
Proceedings of 2018 14th International Conference on Advanced Trends in Radioelectronics, Telecommunications and Computer Engineering (TCSET), Lviv-Slavske, Ukraine, 20-24.02.2018., pp. 1-4
An issue of the parameter selection in various branches of a multi-antenna receiver system determines its effectiveness. A significant effect on these parameters are correlation properties of received signals. In this paper, the assessment of the sig
Externí odkaz:
http://arxiv.org/abs/1803.09617
Autor:
Kelner, Jan M., Ziolkowski, Cezary
Publikováno v:
Proceedings of 2018 12th European Conference on Antennas and Propagation (EuCAP), London, UK, 9-13.04.2018., pp. 1-5
Most propagation models do not consider the influence of antenna patterns on the parameters and characteristics of received signals. This assumption is equivalent to the use of isotropic or omnidirectional antennas in these models. Empirical measurem
Externí odkaz:
http://arxiv.org/abs/1803.09609
Publikováno v:
Proceedings of 2018 22nd International Microwave and Radar Conference (MIKON), Poznan, Poland, 15-17.05.2018., pp. 1-5
Angular dispersion is the effect of a multi-path propagation observed in received signals. An assessment of this phenomenon is particularly important from the viewpoint of emerging fifth generation (5G) communication systems. In these systems, using
Externí odkaz:
http://arxiv.org/abs/1803.09603
Publikováno v:
Proceedings of 2018 22nd International Microwave and Radar Conference (MIKON), Poznan, Poland, 15-17.05.2018., pp. 1-5
In an urban environment, a multipath propagation is one of the basic phenomena affecting a quality of received signals. This causes dispersions in time and angular domains. Basic parameters describing these dispersions are the rms delay spread and rm
Externí odkaz:
http://arxiv.org/abs/1803.09602
Publikováno v:
Proceedings of 2017 11th European Conference on Antennas and Propagation (EuCAP), Paris, France, 19-24.03.2017., pp. 1582-1586
An angular distribution of received signals has a significant impact on their spectral and correlational properties. Most of angular dispersion models do not consider antenna patterns. The developed procedure for determining the propagation path para
Externí odkaz:
http://arxiv.org/abs/1803.07814
Autor:
Ziolkowski, Cezary, Kelner, Jan M.
Publikováno v:
IEEE Transactions on Antennas and Propagation, 2018, vol. 66
A method to evaluate the statistical properties of the reception angle seen at the input receiver that considers the receiving antenna pattern is presented. In particular, the impact of the direction and beamwidth of the antenna pattern on distributi
Externí odkaz:
http://arxiv.org/abs/1803.07333
Autor:
Ziolkowski, Cezary, Kelner, Jan M.
This paper focuses on assessing the limitations in the direction-finding process of radio sources with directional antennas in an urbanized environment, demonstrating how signal source antenna parameters, such as beamwidth and maximum radiation direc
Externí odkaz:
http://arxiv.org/abs/1803.07011
Akademický článek
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Autor:
Kelner, Jan M., Ziółkowski, Cezary
Publikováno v:
In Physical Communication February 2019 32:242-251
