Search for dissertations about: "Power Efficiency"

Showing result 1 - 5 of 1015 swedish dissertations containing the words Power Efficiency.

  1. 1. Cooperative Communications Link Reliability and Power Efficiency

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Tafzeel ur Rehman Ahsin; KTH.; [2012]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cooperative Communications; Link Reliability; Power Efficiency; Energy Efficiency; Network Coding; Cooperative Relaying; SRA - ICT; SRA - Informations- och kommunikationsteknik;

    Abstract : Demand for high data rates is increasing rapidly for the future wireless generations, due to the requirement ofubiquitous coverage for wireless broadband services. More base stations are needed to deliver these services, in order tocope with the increased capacity demand and inherent unreliable nature of wireless medium. READ MORE

  2. 2. May the power be with you managing power-performance tradeoffs in cloud data centers

    University dissertation from Umeå University

    Author : Jakub Krzywda; Umeå universitet.; [2019]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; cloud computing; data centers; power efficiency; power budgeting; application performance;

    Abstract : The overall goal of the work presented in this thesis was to find ways of managing power-performance tradeoffs in cloud data centers. To this end, the relationships between the power consumption of data center servers and the performance of applications hosted in data centers are analyzed, models that capture these relationships are developed, and controllers to optimize the use of data center infrastructures are proposed. READ MORE

  3. 3. High efficiency power amplifiers for wireless communications

    University dissertation from Umeå University

    Author : Hossein Mashad Nemati; [2009]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; supply modulation; Power amplifier; LDMOS; transmitter architecture; efficiency; GaN; MMIC; load modulation; mHEMT;

    Abstract : This thesis presents state-of-the-art high efficiencyharmonically-tuned power amplifiers (PAs) and investigates thecharacteristics and potentials of such amplifiers in two of the mostpromising efficiency enhancement techniques, dynamic supply and load modulation.In this work, a 10 W LDMOS harmonically-tuned PA with 80% power-added-efficiency (PAE) isrealized at 1 GHz. READ MORE

  4. 4. High-efficiency Power Amplification Techniques for Wireless Transmitters

    University dissertation from Umeå University

    Author : Hossein Mashad Nemati; [2010]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; load modulation; LDMOS; supply modulation; GaN HEMT; Power amplifier; wireless communications.; GaAs mHEMT; efficiency;

    Abstract : The low efficiency of existing power amplifiers (PAs) is causing excessive energy consumption in wireless systems. Improving the PA efficiency is therefore of great environmental and economical importance. READ MORE

  5. 5. Elements of the Asia Pacific gas market : market power and efficiency

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Bo Jonsson; Luleå tekniska universitet.; [1999]
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Economics; Nationalekonomi;

    Abstract : Natural gas trade in the Asian Pacific market is heavily dependent on the demand from Japan, which imports around 75% of the gas traded as LNG (liquefied natural gas) in the region. This study argues that the buyers in Japan, through cooperation have the potential to exert the market power that their large market share provides them with. READ MORE