Zobrazeno 1 - 10
of 3 311
pro vyhledávání: '"Lebl A"'
Publikováno v:
Scientific Technical Review, Vol 73, Iss 1, Pp 13-17 (2023)
This paper presents the simulation of mobile telephony systems realized in Excel program. Although primarily intended for other applications, Excel has several advantages over other specialized programs for simulation purposes. Excel application for
Externí odkaz:
https://doaj.org/article/0f468cb0834b479780d4b1790c19b8a2
Autor:
Curry, Sean N., Lebl, Jiří, Giroux, Mathieu, Hannesdottir, Holmfridur S., Mizera, Sebastian, Pasiecznik, Celina
We will cover the basics of several complex variables in 4 lectures: Basic properties of holomorphic functions in several variables, the notion of pseudoconvexity, CR functions and CR geometry, and the $\bar\partial$-problem. The main underlying idea
Externí odkaz:
http://arxiv.org/abs/2411.01056
Autor:
Matić Vladimir S., Mitić Dragan S., Markov Žarko M., Lebl Aleksandar V., Marinković-Nedelicki Verica B.
Publikováno v:
Tehnika, Vol 76, Iss 2, Pp 187-193 (2021)
New modern technologies in mobile telephony overcome the possibilities of GSM systems. VAMOS technique is one way to improve traffic properties of traditional GSM systems. Our aim is to analyze the level of this improvement achieved by VAMOS implemen
Externí odkaz:
https://doaj.org/article/d3e9e5948278490cb8eba0ae1fe8d3a7
Publikováno v:
Scientific Technical Review, Vol 71, Iss 2, Pp 46-52 (2021)
Malicious drones jamming is a subject of numerous researches in the world. The implemented jamming strategy is different in various cases and each improvement in the analysis, modeling and realization contributes to the jamming procedures originality
Externí odkaz:
https://doaj.org/article/20cf315e675144f9928a1f553bcbd937
Autor:
Lamel, Bernhard, Lebl, Jiri
We introduce a framework for Segre varieties for singular real-analytic subvarieties of a complex space and utilize it to study the intrinsic complexifications of these subvarieties. Many examples illustrate the subtle issues arising in the singular
Externí odkaz:
http://arxiv.org/abs/2409.13127
Publikováno v:
Yugoslav Journal of Operations Research, Vol 30, Iss 1, Pp 109-119 (2020)
The output power of traffic channels in one cell of GSM like systems is estimated in this paper. We consider the real case: the number of users is much higher than the number of channels, the output power of one channel depends on the cube of the
Externí odkaz:
https://doaj.org/article/9f3ee5f800954d6ba14f692285f8e944
Publikováno v:
Scientific Technical Review, Vol 70, Iss 1, Pp 21-28 (2020)
The characteristics of combined and comb jamming of RCIED activation messages are presented in this paper. Combined jamming signal is formed as the sum of swept sinusoidal signal and noise signal, while comb jamming signal means that its spectrum has
Externí odkaz:
https://doaj.org/article/c855cec4b8124bfea4789661a19c06e4
Publikováno v:
Serbian Journal of Electrical Engineering, Vol 16, Iss 3, Pp 405-417 (2019)
In this paper we present the dilemma dealing with the choice of speech segment duration and the calculation of speech signal quality in the packet telephone network of Electricity supply industry (ESI). The analyzed signal is packetized by one pac
Externí odkaz:
https://doaj.org/article/a711c78430f343048a2b52dc53f2c90d
Publikováno v:
Tehnika, Vol 74, Iss 2, Pp 245-250 (2019)
In this paper it is analyzed the influence of user moving in the base station cell where power control is implemented on the change of transmitted base station energy comparing to the energy, which is necessary for stationary user. It is proved by ca
Externí odkaz:
https://doaj.org/article/c4a7a4ceb53f4168bc9292a0ab2935c1
We study three possible definitions of the notion of CR functions at CR singular points, their extension to a fixed-neighborhood of the singular point, and analogues of the Baouendi--Tr\`eves approximation in a fixed neighborhood. In particular, we g
Externí odkaz:
http://arxiv.org/abs/2406.06431