Zobrazeno 1 - 10
of 466
pro vyhledávání: '"S. Zvanovec"'
Publikováno v:
Radioengineering, Vol 29, Iss 3, Pp 417-430 (2020)
Today hollow-core optical fibers (HCF) are on the verge of surpassing the attenuation benchmark of silica single-mode optical fibers used in optical communication. Compared to solid-core optical fibers, HCFs exhibit ultra-low nonlinearity, high damag
Externí odkaz:
https://doaj.org/article/9cfd8d3570d74fe9a1361e889810938a
Publikováno v:
Radioengineering, Vol 27, Iss 1, Pp 10-15 (2018)
A modified Octagonal Photonic Crystal Fiber (MO-PCF) is proposed and numerically investigated for the purpose of residual dispersion compensation in the optical transmission link. The results show that the proposed fiber with optimized parameters exh
Externí odkaz:
https://doaj.org/article/5f5cd0ca079e443c9f631e338e22fe0b
Publikováno v:
Radioengineering, Vol 26, Iss 4, Pp 946-953 (2017)
This paper focuses on the performance analysis of a camera based vehicle-to-vehicle visible light communication system employing undersampled phase shift on-off keying modulation under interference scenario. Two Nissan Qashqai front lights with dayli
Externí odkaz:
https://doaj.org/article/86382938a6804abe934fd53067e46a90
Publikováno v:
Radioengineering, Vol 24, Iss 1, Pp 1-9 (2015)
5G networks have to offer extremely high capacity for novel streaming applications. One of the most promising approaches is to embed large numbers of co-operating small cells into the macro-cell coverage area. Alternatively, optical wireless based te
Externí odkaz:
https://doaj.org/article/93f47e4ed49c43e0b775c29c7c891718
Autor:
M. Mudroch, S. Zvanovec
Publikováno v:
Radioengineering, Vol 23, Iss 1, Pp 474-479 (2014)
This paper describes FSO link performance prediction based on available meteorological data using different Artificial Neural Network (ANN) approaches. Several types of ANNs were compared and their performance were evaluated. The paper introduces an
Externí odkaz:
https://doaj.org/article/fc8e6f053d90490faf3d684647b15099
Publikováno v:
Radioengineering, Vol 21, Iss 4, Pp 1060-1066 (2012)
Specific utilization of a microwave radiometer for online monitoring, detection and, especially, prediction of particular dynamic atmospheric effects such as precipitation and cloudiness is proposed in the paper. The ground-based microwave radiometer
Externí odkaz:
https://doaj.org/article/1b3853beeb7a4899a9149847bb6d4f4d
Publikováno v:
Radioengineering, Vol 21, Iss 1, Pp 459-463 (2012)
Due to the thermal expansivity of the material used in the Fabry-Perot resonator mirrors, the resonator cavity length can change and this might therefore have an impact on the resonant frequency during high-resolution spectroscopy measurements. Based
Externí odkaz:
https://doaj.org/article/16c2fde9a8664fe19d0e508b91a632cc
Publikováno v:
Radioengineering, Vol 20, Iss 1, Pp 270-275 (2011)
Dielectric lenses can substantially improve antenna parameters, especially the planarity of radiated waves and the antenna gain. The paper deals with their application in millimeter-wave band. The main goal concerns the introduction of characteristic
Externí odkaz:
https://doaj.org/article/aa9e52da5eaa4bdf84af9780a6cc92d9
Autor:
S. Zvanovec, R. Urban
Publikováno v:
Radioengineering, Vol 17, Iss 3, Pp 60-65 (2008)
The Ultra WideBand (UWB) technology utilizing nanosecond pulses has been one of the main phenomena in communications and radar applications for several years. This paper discusses the basic measurement techniques of impulse systems, particularly focu
Externí odkaz:
https://doaj.org/article/e98766117c524322a23aff2c74cafe6b
Publikováno v:
Radioengineering, Vol 12, Iss 4, Pp 42-49 (2003)
There are two basic ways to deploy wireless LAN access points in anindoor scenario: manual deployment using a site survey based onempirical measurements or planning using a software tool with built-insignal propagation models. In this paper advantage
Externí odkaz:
https://doaj.org/article/9bc14f55826847cbb9739500b8cc3e0e