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Wyszukujesz frazę "software defined networks" wg kryterium: Temat

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    Wyświetlanie 1-4 z 4
    Tytuł:
    Routing policy validation for the integrated system supporting routing in Software Defined Networks (SDNRoute)
    Autorzy:
    Jaglarz, Piotr
    Rzym, Grzegorz
    Jurkiewicz, Piotr
    Boryło, Piotr
    Chołda, Piotr
    Powiązania:
    https://bibliotekanauki.pl/articles/227234.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    congestion
    optimization
    quality of service (QoS)
    software-defined networks (SDN)
    validation
    Opis:
    In the article, a validation module, being a component of an integrated system supporting routing in software defined networks (SDNRoute), is proposed and thoroughly examined. The module allows for the verification of the results provided by the optimization module before these results are deployed in the production network. Routing policies are validated for their impact on the network quality parameters and against the threat of overloading (congestion).
    Źródło:
    International Journal of Electronics and Telecommunications; 2020, 66, 1; 77-83
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Novel Software-Defined Networking Controller : the Distributed Active Information Model (DAIM)
    Autorzy:
    Pupatwibul, P.
    Banjar, A.
    Hossain, M. I.
    Braun, R.
    Moulton, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/226996.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    distributed network
    OpenFlow
    DAIM model
    software defined networking
    next generation networks
    Opis:
    This paper presents a new OpenFlow controller: the Distributed Active Information Model (DAIM). The DAIM controller was developed to explore the viability of a logically distributed control plane. It is implemented in a distributed way throughout a software-defined network, at the level of the switches. The method enables local process flows, by way of local packet switching, to be controlled by the distributed DAIM controller (as opposed to a centralised OpenFlow controller). The DAIM ecosystem is discussed with some sample code, together with flowcharts of the implemented algorithms. We present implementation details, a testing methodology, and an experimental evaluation. A performance analysis was conducted using the Cbench open benchmarking tool. Comparisons were drawn with respect to throughput and latency. It is concluded that the DAIM controller can handle a high throughput, while keeping the latency relatively low. We believe the results to date are potentially very interesting, especially in light of the fact that a key feature of the DAIM controller is that it is designed to enable the future development of autonomous local flow process and management strategies.
    Źródło:
    International Journal of Electronics and Telecommunications; 2018, 64, 2; 209-216
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Improving the Efficiency of UAV Communication Channels in the Context of Electronic Warfare
    Autorzy:
    Semendiai, Serhii
    Tkach, Yuliіa
    Shelest, Mykhailo
    Korchenko, Oleksander
    Ziubina, Ruslana
    Veselska, Olga
    Powiązania:
    https://bibliotekanauki.pl/articles/27311946.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    cognitive radio
    software-defined radio
    neural networks
    coding
    electronic warfare
    communication channel
    wireless communications
    spectrum analysis
    Opis:
    The article is devoted to the development of a method for increasing the efficiency of communication channels of unmanned aerial vehicles (UAVs) in the conditions of electronic warfare (EW). The author analyses the threats that may be caused by the use of electronic warfare against autonomous UAVs. A review of some technologies that can be used to create original algorithms for countering electronic warfare and increasing the autonomy of UAVs on the battlefield is carried out. The structure of modern digital communication systems is considered. The requirements of unmanned aerial vehicle manufacturers for onboard electronic equipment are analyzed, and the choice of the hardware platform of the target radio system is justified. The main idea and novelty of the proposed method are highlighted. The creation of a model of a cognitive radio channel for UAVs is considered step by step. The main steps of modelling the spectral activity of electronic warfare equipment are proposed. The main criteria for choosing a free spectral range are determined. The type of neural network for use in the target cognitive radio system is substantiated. The idea of applying adaptive coding in UAV communication channels using multicomponent turbo codes in combination with neural networks, which are simultaneously used for cognitive radio, has been further developed.
    Źródło:
    International Journal of Electronics and Telecommunications; 2023, 69, 4; 727--732
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    27 dBm Microwave Amplifiers with Adaptive Matching Networks
    Autorzy:
    Rosolowski, D.
    Wojtasiak, W.
    Gryglewski, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/226524.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Adaptive Power Amplifiers (APAs)
    components for Software Defined Radio
    multi-band devices
    multi-mode devices
    RF
    adaptivity
    tunable matching networks
    Opis:
    The paper describes adaptive amplifier design with varactors and pin diodes as regulators of matching networks. As examples the two amplifiers with SHF-0189 HFET transistor and different matching sections were designed and manufactured. The output power level of 27 dBm and gain higher than 13 dB within L and S-band have been achieved. The amplifier design methodology is based on the small-signal approach and DC characteristics of transistors and regulators. Amplifier adaptivity allows us to remotely control the chosen parameters such as: frequency range, output power level, gain and etc.
    Źródło:
    International Journal of Electronics and Telecommunications; 2011, 57, 1; 103-108
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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