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Visar resultat 1 - 5 av 87 avhandlingar som matchar ovanstående sökkriterier.

1. 1. Optimizing Energy Efficiency in Wireless Links Through Reconfigurable Intelligent Surfaces and Optimal Ratios

   Författare :Anders Enqvist; Emil Björnson; Ozlem Tugfe Demir; Cicek Cavdar; Yuanwei Liu; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; 6G; Energy Efficiency; Reconfigurable Intelligent Surfaces; 6G; energieffektivitet; rekonfigurerbara intelligenta ytor; Informations- och kommunikationsteknik; Information and Communication Technology;

   Sammanfattning : This thesis explores the optimization of energy efficiency (EE) in the radiolink of wireless communication systems, focusing on both the user equipment (UE) and the base station (BS). The first part of the study examines strategies to minimize the energy consumption of the UE when transmitting short data payloads, utilizing a reconfigurable intelligent surface (RIS) controlled by the BS, to improve the channel conditions. LÄS MER

3. 2. Energy Management for Improved Energy Efficiency in the Pulp and Paper Industry : Success Factors for Strengthening Drivers and Overcoming Barriers

   Författare :Akvile Lawrence; Magnus Karlsson; Patrik Thollander; Lars J. Nilsson; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; energy management; barriers; drivers; energy efficiency; pulp and paper industry; industry; energiledning; drivkrafter; hinder; framgångsfaktorer; energieffektivitet; SEC; specifik energi; industri; massa; papper; energiintensiv; tillverkning;

   Sammanfattning : Industrial energy efficiency improves the profit and competitive advantage of companies. The pulp and paper industry (PPI)being one of the five most energy-intensive industries uses 5.6% of global industrial energy, according to the InternationalEnergy Agency. LÄS MER

4. 3. Energy efficiency measures in the built environment - some aspects to consider in Sweden

   Författare :Mattias Gustafsson; Björn O. Karlsson; Mats Rönnelid; Louise Ödlund; Jan-Olof Dalenbäck; Högskolan i Gävle; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; primary energy; energy efficiency; district heating; building regulations; electric meter; low-voltage distribution networks; electric vehicles; primärenergi; energieffektivitet; fjärrvärme; byggregler; elmätare; elnät; elfordon; Hållbar stadsutveckling; Sustainable Urban Development;

   Sammanfattning : The traditional energy system as we know it today will change in the future. There is a worldwide concern about the global warming situation and there are different actions implemented to limit the consequences from, mainly, the use of fossil fuels. LÄS MER

5. 4. Tracking Emissions Reductions and Energy Efficiency in the Steel Industry

   Författare :Johannes Morfeldt; Semida Silveira; Wolfgang Eichhammer; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; energy efficiency; greenhouse gas emissions reductions; indicators; iron and steel industry; systems analysis; energieffektivitet; växthusgasutsläppsminskning; indikatorer; järn- och stålbranschen; systemanalys; Energy Technology; Energiteknik;

   Sammanfattning : The iron and steel industry has become increasingly globalised. Market conditions are also changing and de-carbonisation of production is challenging.The objective of this thesis is to assess how energy efficiency and greenhouse gas emissions reductions can be promoted and effectively monitored in the steel industry. LÄS MER

7. 5. Cross-Layer Energy-Efficient Mobile Network Design

   Författare :Peiliang Chang; Guowang Miao; Jens Zander; Eduard Jorswieck; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; green mobile networks; energy efficiency; base station sleeping; resource allocation; mobile edge computing; interference coordination; NOMA; gröna mobilnätverk; energieffektivitet; basstationssömn; resursallokering; mobil kantnodsberäkning; störningssamordning; Informations- och kommunikationsteknik; Information and Communication Technology;

   Sammanfattning : To assure the sustainable development of mobile networks, it is crucial to improve their energy efficiency. This thesis is devoted to the design of energy-efficient mobile networks. A cross-layer design approach is adopted. LÄS MER