Sökning: "Downlink"

Visar resultat 11 - 15 av 124 uppsatser innehållade ordet Downlink.

  1. 11. Antenna Options for High Altitude IMT Base Stations (HIBS) in Cellular Networks

    Master-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Författare :Harald Magnusson; [2022]
    Nyckelord :High altitude IMT Base Station HIBS ; High Altitude Platform Station HAPS ; Link Feasibility; Coverage Feasibility; Phased Array Antenna; Parabolic Reflector Antenna;

    Sammanfattning : This thesis is the result of a collaboration between Ericsson AB and Luleå University of Technology. A feasibility study has been conducted to investigate antenna options for the HIBS access link. The study contains two parts. Firstly, a link budget investigating the gain required from the antenna. LÄS MER

  3. 12. Beamforming router as relay to increase 5G cell coverage

    Master-uppsats, Blekinge Tekniska Högskola/Institutionen för datavetenskap

    Författare :Jhansi Dunuka; Nikolai Panagiotou; [2021]
    Nyckelord :Beamforming; MIMO; 5G; NR; Direction of Arrival; Relay;

    Sammanfattning : The growing traffic and global bandwidth shortage for broadband cellular communi-cation networks has motivated to explore the underutilized millimeter wave frequencyspectrum for future communications. Fifth generation (5G) is the key to empow-ering new services and use cases for people, businesses, and society at large. LÄS MER

  4. 13. Deployable Base Stations for Mission Critical Communications

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

    Författare :Gokul Panneerselvam; [2021]
    Nyckelord :UAVs; Load balancing; Wireless networks; Power control; Aerial base stations; 5G Radio; Drones; Genetic Algorithm; UAV: er; Lastbalansering; Trådlösa nätverk; Strömkontroll; Antennbasstationer; 5G -radio; Drönare; Genetisk Algoritm;

    Sammanfattning : Uninterrupted network connectivity is vital for real-time and mission-critical communication networks. The failure of Base Stations due to unforeseen circumstances such as natural disasters or emergencies can affect the coverage and capacity provided by terrestrial communication networks. LÄS MER

  5. 14. Adaptive Frequency Resolution for Downlink Beamforming in 5G NR

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Johanna Bengtsson; [2021]
    Nyckelord :beamforming; MIMO; 5G; 5G NR; Technology and Engineering;

    Sammanfattning : As the demand for higher data rates and lower latencies increase, together with the use of higher frequency bands, MIMO and beamforming have become an essential part of the 5G NR technology. Calculating the beamforming weights is a costly process, and reducing the frequency resolution of the weight calculations would save a significant amount of computational power. LÄS MER

  7. 15. Beam refinement and beam tracking using Machine Learning Techniques in 5G NR RAN

    Master-uppsats, Blekinge Tekniska Högskola/Institutionen för datavetenskap

    Författare :Harshal Patel; [2021]
    Nyckelord :;

    Sammanfattning : Abstract: Growing needs of communication, demands a higher data transmission rate in 5G NR. In the 3rd generation partnership project (3GPP), frames are used to schedule the data to be transferred between the cellular base station (gNB) and user equipment (UE). LÄS MER