Sökning: "over-the-air"

Visar resultat 6 - 10 av 37 uppsatser innehållade ordet over-the-air.

1. 6. 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

3. 7. Fault-Tolerant Over-the-Air Federated Learning with Clustered Aggregation : Using a hierarchical architecture with hybrid digital and analog communication, to deal with byzantine users in Federated Learning over wireless networks.

   Master-uppsats, Linköpings universitet/Kommunikationssystem

   Författare :David Nordlund; [2023]
   Nyckelord :federated learning; aircomp;

   Sammanfattning : Rapid advancements in modern AI applications have placed unprecedented demands on large-scale connectivity and data aggregation. The vision of Internet-of-Things (IoT) is supported by a massive amount of distributed sensors and wireless devices that generate useful data for these applications. LÄS MER

4. 8. Kartläggning av cybersäkerheten på uppkopplade bilar : Sårbarheter

   Kandidat-uppsats, Högskolan i Skövde/Institutionen för informationsteknologi

   Författare :Pontus Claesson; [2023]
   Nyckelord :;

   Sammanfattning : The future is here with interconnected computers on four wheels - connected cars! Just like regular computers in networks, there is also a huge amount of cybersecurity challenges regarding vehicles. With the large amount of data transmitted between vehicles and other devices, a proper way of securing the connections is important. LÄS MER

5. 9. Improving the Robustness of Over-the-Air Synchronization for 5G Networks in a Multipath Environment

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

   Författare :Anders Erninger; [2023]
   Nyckelord :Peak selection algorithms; Peak matching; Time alignment error; Over-the-air synchronization; Multipath environment; Toppvalsalgoritmer; Toppmatchning; Tidsfel; Luftburen synkronisation; Flervägsmiljö;

   Sammanfattning : Synchronization between base stations is a fundamental part of any operating telecommunication system. With 5G and future generations of mobile networks, the data speeds are getting higher, which creates the need for fast and accurate synchronization. In wireless systems, the transmitted signals are affected by the environment. LÄS MER

7. 10. An analysis of the effect of compression on FOTA through BLE

   Kandidat-uppsats, Jönköping University/JTH, Avdelningen för datateknik och informatik

   Författare :Mohammed Yazan Arab; Markus Arnoldsson; [2022]
   Nyckelord :Compression; Embedded systems; FOTA; over the air; nordic semiconductor; BLE;

   Sammanfattning : This paper studies the effects of the Firmware Over-The-Air update process done through Bluetooth Low Energy using a compression-based update solution compared to a non-compressed update solution.   The method that is used in this study is an experimental method using a Nordic semiconductor board as an IoT device. LÄS MER