Sökning: "digital transmissions"

Visar resultat 1 - 5 av 15 uppsatser innehållade orden digital transmissions.

1. 1. Digital Front End Algorithms for Sub-Band Full Duplex

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

   Författare :Midhat Rizvi; Khaled Al-Khateeb; [2023]
   Nyckelord :Adjacent Channel Leakage Ratio; Bit Error Rate; Clipping and Filtering; Crest Factor Reduction; Digital front end; Digital Pre-Distortion Error Vector Magnitude; Frequency Division Duplex; Power Amplifier; Peak to Average Power Ratio; Peak Cancellation Crest Factor Reduction; Sub Band Full Duplex; Self-Interference Cancellation; Signal-to-Interference Noise Ratio; Signal-to-Noise Ratio; Turbo Clipping; Time Division Duplex; Technology and Engineering;

   Sammanfattning : Sub-band full duplex is a new communication scheme technology, where a single frequency band is partitioned into sub-bands for downlink (DL) and up-link(UL) transmissions, and both can take place simultaneously. The idea behind the sub-band full duplex development is to improve the throughput, and coverage and reduce the latency of the UL communication by allowing the UL reception during the DL transmission. LÄS MER

3. 2. An Evaluation of Ethernet as Data Transport System in Avionics

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

   Författare :Rickard Doverfelt; [2020]
   Nyckelord :AFDX; Avionics; Bandwidth utilisation; Ethernet; Latency; Legacy systems; AFDX; Avionik; Bandbreddsutyttjande; Ethernet; Latency; Legacysystem;

   Sammanfattning : ÅF Digital Solutions AB are looking to replace their current legacy system for audio transmissions within aircrafts with a new system based on Ethernet. They also want the system to be as closely matching the current Audio Integration System as possible as well as preferably using commercial off the shelf components. LÄS MER

4. 3. Hybrid Beamforming Design for Full-Duplex mmWave Relaying Systems

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

   Författare :Zhe Wu; [2020]
   Nyckelord :mmWave; full-duplex; hybrid beamforming; self-interference cancellation; OMP; fast ADMM; convergence; mmwave; fullständig duplex; hybridstrålformning; självförstörande annullering; OMP; snabb ADMM; konvergens;

   Sammanfattning : With the tremendous growth in the mobile data traffic, the demand for highdata rate is increasing rapidly, and higher frequency resources shall be exploredto alleviate the congestion in the overcrowded spectrum, thus, the millimeterwave (mmWave) frequency resource ranging from 30 GHz to 300 GHz has beenrecognized as a nature fit for the fifth-generation (5G) and beyond network. Tocompensate the severe path-loss in the mmWave band as well to realize theefficient transmissions by applying the low-cost architecture, it is of intereststo investigate the beamforming schemes with large-scale antenna arrays andthe full-duplex (FD) relaying strategy, which are indispensable in the operationof directional signal transmission and the efficient spectrum utilization inthe mmWave transmission, respectively. LÄS MER

5. 4. Smart Process for Automated Engineering Tasks : A case study at Volvo Group Trucks Operations

   Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Författare :André Väänänen; [2020]
   Nyckelord :Digitalization; Virtual manufacturing; Assembly work instructions; Information model; Automation;

   Sammanfattning : Volvo Group Trucks Operations is a subordinate organization to the Volvo Group concern, which is one of the world's largest manufactures of trucks, buses, construction equipment, marine and industrial engines. Volvo Group Trucks Operations organization encompasses all production of the Volvo Group’s engines and transmissions as well as all production of Trucks. LÄS MER

7. 5. Zoom to the rescue : en kvalitativ studie om hur studenter upplever kommunikation under en Zoom-föreläsning

   L2-uppsats, Lunds universitet/Medie- och kommunikationsvetenskap; Lunds universitet/Institutionen för kommunikation och medier

   Författare :Mathilda Gunnarsson; Julia Karlsson; [2020]
   Nyckelord :communication; digital communication tools; digitalization; Zoom; communication efficiency; covid-19; interaction; noise; ritual; virtual; Social Sciences;

   Sammanfattning : Denna studie ämnar undersöka studenters upplevelser av kommunikation under en Zoom-föreläsning. Under den globala pandemin under vintern 2020 valde många universitet att förflytta utbildningen till distans för att förhindra spridningen av viruset covid-19. LÄS MER