Sökning: "radio data system"

Visar resultat 21 - 25 av 428 uppsatser innehållade orden radio data system.

  1. 21. Reducing Power Consumption For Signal Computation in Radio Access Networks : Optimization With Linear Programming and Graph Attention Networks

    Master-uppsats, Linköpings universitet/Programvara och system

    Författare :Martin Nordberg; [2023]
    Nyckelord :Cloud RAN; Constrained optimization; Mixed integer linear programming; MILP; Machine learning; Graph neural network; Graph attention network; GAT;

    Sammanfattning : There is an ever-increasing usage of mobile data with global traffic having reached 115 exabytes per month at the end of 2022 for mobile data traffic including fixed wireless access. This is projected to grow up to 453 exabytes at the end of 2028, according to Ericssons 2022 mobile data traffic outlook report. LÄS MER

  3. 22. Time synchronization error detection in a radio access network

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

    Författare :Moulika Madana; [2023]
    Nyckelord :GNSS - Global Navigation Satellite System; OAS - Over-the air-synchronization; PRTC - primary reference time clock; PTP - precision time protocol; Gauss Jordan elimination; GNN- Graph Neural Network; GNSS -Globalt navigationssatellitsystem; OAS - Över-the-air tidssynkronisering; PRTC - Primär referenstidklocka; PTP - Precisionstidprotokoll; Gauss Jordan eliminering; GNN- Graf neurala nätverk;

    Sammanfattning : Time synchronization is a process of ensuring all the time difference between the clocks of network components(like base stations, boundary clocks, grandmasters, etc.) in the mobile network is zero or negligible. It is one of the important factors responsible for ensuring effective communication between two user-equipments in a mobile network. LÄS MER

  4. 23. Arbitrary motion Synthetic Aperture Radar

    Master-uppsats, Lunds universitet/Matematisk statistik

    Författare :Filip Alberius; Erik Rolander; [2023]
    Nyckelord :RADAR; SAR; Synthetic Aperture Radar; Pulsed Coherent Radar; PCR; VR; Virtual Reality; IMU; Inertial Measurment Unit; VAA; Virtual Antenna Array; Obstacle detection; Signal Processing; Matched Filter Method.; Technology and Engineering;

    Sammanfattning : Syftet med denna avhandling är att utveckla en ny metod för att producera bilder med syntetisk aperturradar (SAR), med utgångspunkt i scenarier med arbiträr rörelse vad gäller radarsensorn. SAR är en väletablerad metod för att skapa 2- eller 3-dimensionella radarbilder, som traditionellt sett antar att radar-sensorns rörelse är linjär och förutsägbar. LÄS MER

  5. 24. Load Distribution in the Open Radio Access Network

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

    Författare :Simon Lundberg; [2023]
    Nyckelord :RAN; Load Distribution; O-RAN; 5G;

    Sammanfattning : As 5G and O-RAN become more widely used, the number of user equipment requesting access to the network will increase. This will require operators to expand their 5G solutions by purchasing more hardware to handle the increase in demand. The acquisition of new hardware will have both an economic and an environmental impact. LÄS MER

  7. 25. Remote MPPT measurementand logging system for solar modules

    Kandidat-uppsats,

    Författare :Viktor Westberg; Alexander Eklund; [2023]
    Nyckelord :MPPT; solar; LoRa; IoT;

    Sammanfattning : We have designed and built a remote measurement system for evaluating the long-termperformance of solar photovoltaic (PV) modules. The system consists of a measurementdevice connected to the solar module which keeps the PV module at Maximum PowerPoint (MPP) and continuously measures the voltage and current at this point. LÄS MER