Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Rimvydas Aleksiejunas"'
Autor:
Ilona Zamaraite, Saulius Rudys, Saulius Lapinskas, Rimvydas Aleksiejunas, Robertas Grigalaitis, Juras Banys
Publikováno v:
Nonlinear Analysis, Vol 27, Iss 6 (2022)
In this paper, the full-wave analysis of the direct scattering problem in the rectangular waveguide is derived. The numerical calculation results of the scattering characteristics are presented. To show the advantage of our proposed model, we compare
Externí odkaz:
https://doaj.org/article/469254f074474ad29904e6eadbd36124
Publikováno v:
Elektronika ir Elektrotechnika, Vol 24, Iss 5, Pp 74-79 (2018)
Understanding of line-of-sight and non-line-of-sight (LOS/NLOS) visibility conditions is important for radio wave propagation modeling when selecting empirical path loss model. For Monte Carlo statistical simulations a random generator of visibility
Externí odkaz:
https://doaj.org/article/4f4a426bd9c54e309e089ab5e15faa44
Publikováno v:
2018 Baltic URSI Symposium (URSI).
A cluster scattering MIMO channel model is proposed combining advantages of map-based models such as spatial consistency as well as stochastic properties of more general statistical models. The model is constructed by generating clusters based on LOS
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::813ea3236fd6d8af5058528c084d05a8
https://doi.org/10.23919/ursi.2018.8406737
https://doi.org/10.23919/ursi.2018.8406737
Autor:
Rimvydas Aleksiejunas, Jevgenij Krivochiza, Kestutis Svirskas, Vytautas Jonkus, Jurgis Aleksandravicius
Publikováno v:
Wireless Personal Communications. 82:1719-1731
The paper presents results of pulsed radar signal interference impact on multiple-input and multiple-output (MIMO) Long Term Evolution (LTE) downlink data service analysis. Interference from radar operating in 800 MHz frequency band is studied analyt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11ff5f39c84cf88827378845ed24f691
https://doi.org/10.1007/s11277-015-2308-3
https://doi.org/10.1007/s11277-015-2308-3
Autor:
Rimvydas Aleksiejunas
A method for reconstructing multiple-input multiple-output (MIMO) channel correlation matrices from lower dimensional channel measurements is presented. Exploiting the symmetry of correlation matrix structure enables reproducing higher dimensional MI
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f5af234a7fb93abe8f3914881effbf11
http://arxiv.org/abs/1612.02925
http://arxiv.org/abs/1612.02925
Autor:
Jevgenij Krivochiza, Mindaugas Zilinskas, Jurgis Aleksandravicius, Rimvydas Aleksiejunas, Kestutis Svirskas
Publikováno v:
Elektronika ir Elektrotechnika. 22
In 2012 the Communications Regulatory Authority of Lithuania reallocated 790–862 MHz band used by terrestrial TV operators for mobile communications purposes following an International Telecommunication Union decision. The aim of this paper is to e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::747b598ab75db5178547676464d015fe
https://doi.org/10.5755/j01.eie.22.4.15923
https://doi.org/10.5755/j01.eie.22.4.15923
Autor:
V. Ivaska, Rimvydas Aleksiejunas
Publikováno v:
Open Physics, Vol 10, Iss 1, Pp 66-75 (2012)
The work presents geometric phase decomposition for analytical signals using Hermite-Gaussian functions. The decomposition is based on the time-frequency distribution with reassigned and multi-tapered spectrogram resulting in increased phase estimati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::374edb7059f7fe4d415a167e19e200a0
https://doaj.org/article/94b33aaf8c264c198765639fff8f90f2
https://doaj.org/article/94b33aaf8c264c198765639fff8f90f2
Autor:
Kestutis Svirskas, Jurgis Aleksandravicius, Jevgenij Krivochiza, Rimvydas Aleksiejunas, Paulina Bauzyte, Vytautas Jonkus
Publikováno v:
2015 23rd Telecommunications Forum Telfor (TELFOR).
Multiple-input multiple-output (MIMO) antenna selection is investigated by the means of system statistical parameters to determine patterns to minimize co-channel interference into orthogonal frequency division multiplexing access (OFDM) based networ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bfb4177e468d1fa19157ab4708c26c95
https://doi.org/10.1109/telfor.2015.7377436
https://doi.org/10.1109/telfor.2015.7377436
Autor:
Rimvydas Aleksiejunas
Publikováno v:
Integrated Computer-Aided Engineering. 23:201-202
Habib and Rupp [3] provided analytical results for mutual coupling between multiple dipole antennas with angular or spatial separation. However, the method of deriving mutual coupling from mutual impedance involved several inconsistencies on which de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed4c4540010279b160c842f8da63e108
https://doi.org/10.3233/ica-150504
https://doi.org/10.3233/ica-150504
Autor:
Rimvydas Aleksiejunas, V. Ivaska
Publikováno v:
Physics Letters A. 235:1-6
Geometric phases are defined for superpositions of scalar waves of various nature. The geometric phases possess similar properties to those of polarized light wave ones, but require a different parametric space. An appropriate parametric space is con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a9bfb03db6a7c3f75e57441e8660dfb
https://doi.org/10.1016/s0375-9601(97)00584-7
https://doi.org/10.1016/s0375-9601(97)00584-7