Search for dissertations about: "Gävle"

Showing result 1 - 5 of 175 swedish dissertations containing the word Gävle.

  1. 1. Evaluation of energy conserving measures in buildings connected to a district heating system case studies in Gävle, Sweden

    University dissertation from Gävle : Gävle University Press

    Author : Mattias Gustafsson; Högskolan i Gävle.; [2016]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; energieffektivisering; miljonprogrammet; solceller;

    Abstract : When different energy conserving measures are implemented for reducing energy use in buildings and the buildings are connected to district heating systems, it is important that an overall system analysis is made which takes into account the effects of total change of energy use due to the energy conserving measures.The method applied in this thesis uses hourly production data for the different production units in the district heating system in Gävle, Sweden. READ MORE

  2. 2. On Finding Spectrum Opportunities in Cognitive Radios Spectrum Sensing and Geo-locations Database

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Mohamed Hamid; Högskolan i Gävle.; Högskolan i Gävle.; KTH.; KTH.; [2013]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; COgnitive Radio; Dynamic Spectrum Access; Spectrum Opportunity; Spectrum Sensing; GEo-locations database;

    Abstract : The spectacular growth in wireless services imposes scarcity in term of the available radio spectrum. A solution to overcome this scarcity is to adopt what so called cognitive radio based on dynamic spectrum access. READ MORE

  3. 3. RF Channel Characterization in Industrial, Hospital and Home Environments

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Javier Ferrer Coll; KTH.; Högskolan i Gävle.; Högskolan i Gävle.; [2012]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SRA - ICT; SRA - Informations- och kommunikationsteknik;

    Abstract : The rapid development of electronic components has resulted in the emergence of newmobile applications targeted at industry and hospital sectors. Moreover, a lack of availablewireless frequencies as result of the growth of wireless systems is becoming a problem. READ MORE

  4. 4. Over-the-Air Performance Estimation of Wireless Device Antennas

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Sathyaveer Prasad; KTH.; Högskolan i Gävle.; Högskolan i Gävle.; [2013]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : This thesis work presents studies on the available measurement methods for estimating the over-the-air (OTA) performance of wireless device antennas. This thesis is divided into two parts. READ MORE

  5. 5. Studies of Three Different Methods to Estimate the Up-link Performance of Mobile Phone Antennas

    University dissertation from Stockholm : Royal Institute of Technology (KTH)

    Author : Sathyaveer Prasad; Högskolan i Gävle.; Högskolan i Gävle.; KTH.; [2011]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY Information technology Telecommunication; TEKNIKVETENSKAP Informationsteknik Telekommunikation; Antenna measurements; mobile phones; total radiated power; reverberation chamber; anechoic chamber; Telia Scattered Field Method; Maximum likelihood Estimator;

    Abstract : Antennas play an important role in determining the overall radio performance for wireless communications. If all other radio components perform according to their specifications, the performance of a mobile phone can be entirely determined by measuring the efficiency of its antenna. READ MORE