Sökning: "mobile data communications"

Visar resultat 1 - 5 av 105 avhandlingar innehållade orden mobile data communications.

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. Social Order of the Co-Located Mobile Phone : Practices of collaborative mobile phone use

   Författare :Moira McGregor; Barry Brown; Christian Licoppe; Stockholms universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Human-computer interaction; Mobile phones; Ethnography; Video analysis; Collaborative interaction; Field studies; Computer and Systems Sciences; data- och systemvetenskap;

   Sammanfattning : This thesis examines mundane practices of everyday phone use to make conceptual, empirical and methodological contributions to ongoing research on mobile technology. It argues that we do not yet have a clear understanding of how the mobile phone is used–who does what, when and why. LÄS MER

4. 3. 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

5. 4. Design and use of mobile technology in distance language education : Matching learning practices with technologies-in-practice

   Författare :Olga Viberg; Åke Grönlund; Mats Tegmark; Annika Andersson; Victor Kaptelinin; Högskolan Dalarna; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; online distance education; mobile learning; mobile-assisted language learning; information systems artefact; design science research; learning practices; structuration; self-regulation; technology-in-practice; Complex Systems – Microdata Analysis; Komplexa system - mikrodataanalys; Informatik; Informations- och kommunikationsteknik;

   Sammanfattning : This thesis focuses on the adaptation of formal education to people’s technology- use patterns, theirtechnology-in-practice, where the ubiquitous use of mobile technologies is central. The research question is: How can language learning practices occuring in informal learning environments be effectively integrated with formal education through the use of mobile technology? The study investigates the technical, pedagogical, social and cultural challenges involved in a design science approach. LÄS MER

7. 5. On Emerging Mobile Learning Environments

   Författare :Edgar Napoleon Asiimwe; Åke Grönlund; Mathias Hatakka; Mark Dougherty; Mohamed Ally; Örebro universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Mobile learning; LCMS; Mobile phones; FRAME; Emerging Mobile Learning Environments; IS artefact; Action research; CAR; LDCs;

   Sammanfattning : This thesis investigates issues pertaining to the implementation of mobile learning and particularly the use of learning content management systems and mobile devices in university education. The thesis is positioned at the intersection of the research areas of information systems and education. LÄS MER