Sökning: "UMTS"

Visar resultat 1 - 5 av 107 uppsatser innehållade ordet UMTS.

  1. 1. Characterisation and Modeling of RF environment

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Signaler och system

    Författare :Patric Beas Petersson; [2022]
    Nyckelord :signal processing; passive radar; antenna array; data processing; signalbehandling; passiv radar; antennarray; databehandling;

    Sammanfattning : Devices that transmit and receive electromagnetic signals are today central to the way people communicate and acquire information from the surroundings. WiDAR, Wideband Digital Array Receiver, is the name of a new system of digital antenna array receivers, which has recently been developed at Saab in Järfälla and is the focus of this thesis. LÄS MER

  3. 2. Design of Cellular and GNSS Antenna for IoT Edge Device

    Magister-uppsats, Högskolan i Halmstad/Akademin för informationsteknologi

    Författare :Ioannis Broumas; [2019]
    Nyckelord :IoT; Internet of Things; Edge device; LTE; 4G; LTE-M1; Antenna; Antenna System; Narrow Band IoT; NB-IoT; Plannar Antennas; GPS; PCB; multiband antenna;

    Sammanfattning : Antennas are one of the most sensitive elements in any wireless communication equipment. Designing small-profile, multiband and wideband internal antennas with a simple structure has become a necessary challenge. LÄS MER

  4. 3. Closing of 3G Sites : Model for Decision Making

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Emmanuel Chaudron; [2018]
    Nyckelord :Mobile telephony; Base station BS ; 3G sunset; UMTS; Business data processing; Economic feasibility analysis; Techno-economic study; Mobiltelefoni; Basstation; 3G sunset; UMTS; Företagsdatabehandling; Ekonomisk genomförbarhetsanalys; Tekno-ekonomisk studie;

    Sammanfattning : Radio access technologies evolving fast, mobile operators have to handle an increasing amount of base stations and frequency bands for their network to continue to function. This is a costly venture for mobile network operators that continuously have to keep up to date with never-ending advancements in technologies, as base stations are costly to build and to maintain. LÄS MER

  5. 4. Emulating 3G Network Characteristics on WiFi Networks

    Master-uppsats, Linköpings universitet/Programvara och system

    Författare :Alexander Alesand; [2015]
    Nyckelord :Emulation; Network Emulation; Network Testing; Software Testing; Testing; UMTS; 3G; Spotify; Emulering; Nätverksemulering; Nätverkstestning; Mjukvarutestning; Testning; 3G; UMTS; Spotify;

    Sammanfattning : Mobile applications should work regardless of which type of wireless interface is used, and should be able to conceal unstable connections from the user to improve user experience. Therefore, network testing is important when developing mobile applications, but it is a challenge to reproduce network conditions when using real cellular networks since the test engineer has no control over the quality of the cellular network. LÄS MER

  7. 5. Mobile Services Based Traffic Modeling

    Master-uppsats, Linköpings universitet/Matematisk statistik; Linköpings universitet/Tekniska högskolan

    Författare :Kristoffer Strengbom; [2015]
    Nyckelord :UMTS networks; Internet Protocol; TCP; UDP; Fast Fourier transform; service behavior; Markov renewal process; kernel estimation methods and model selection.;

    Sammanfattning : Traditionally, communication systems have been dominated by voice applications. Today with the emergence of smartphones, focus has shifted towards packet switched networks. LÄS MER