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Visar resultat 1 - 5 av 86 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. Mobile Satellite Broadcast and Multichannel Communications : analysis and design

    Författare :Cristoff Martin; Björn Ottersten; Jack Winters; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Signalbehandling; communications; satellite broadcast; mobile; MIMO; asymptotic analysis; spatial multiplexing; Signalbehandling; Signal processing; Signalbehandling;

    Sammanfattning : In this thesis, analytical analysis and design techniques for wireless communications with diversity are studied. The impact of impairments such as correlated fading is analyzed using statistical models. Countermeasures designed to overcome, or even exploit, such effects are proposed and examined. LÄS MER

  3. 2. The effectiveness of a full-mobility architecture for wireless mobile computing and personal communications

    Författare :George Yuejin Liu; Gerald Maguire; Randy Katz; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mobile Computing; Mobile-API; Mobile Agent; Mobile Floating Agent; Intelligent Agent; Full-Mobility; Mobility Architecture; Mobility Awareness; Location Awareness; Location Prediction; Mobile Personal Communications.;

    Sammanfattning : The emergence of wireless mobile computing, especially the mobility of computers, introduces challenging new problems that were encountered in neither the design and implementation of conventional mobile networks or in fixed computer networks. A critical and challenging problem, for mobile computing and personal communications, is how to fully cope with the special characteristics of the mobile wireless environment, i. LÄS MER

  4. 3. Towards QoE-aware mobile infrastructures : QoE-based Resource Management in Mobile Networks

    Författare :Luis Guillermo Martinez Ballesteros; Zary Segall; Anders Furuskär; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Quality of Experience; Radio Resource management; Mobile Networks; Informations- och kommunikationsteknik; Information and Communication Technology;

    Sammanfattning : With the development of mobile networks, customer needs and behaviourshave changed. Mobile communications means so much more than simplevoice communication; there is now mobile Internet with web surfing, videophone,streaming media, and micro blogging. LÄS MER

  5. 4. Seamless Communications

    Författare :Lennart Isaksson; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : The evolution of today’s wireless technologies and small hand-held devices has enabled the handling of the trade-off between mobility and performance. Things have, however, become more complex. Users demand high performance when using small and resource-efficient devices. LÄS MER

  7. 5. Wireless Multi Hop Access Networks and Protocols

    Författare :Anders Nilsson Plymoth; Institutionen för elektro- och informationsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Multi Hop Access; Wireless Networks; Mobile IP; Performance Evaluation; Medium Access Control; Routing; Wireless Ad hoc Networks;

    Sammanfattning : As more and more applications and services in our society now depend on the Internet, it is important that dynamically deployed wireless multi hop networks are able to gain access to the Internet and other infrastructure networks and services. This thesis proposes and evaluates solutions for providing multi hop Internet Access. LÄS MER