Sökning: "wireless mobile communications"

Visar resultat 21 - 25 av 86 avhandlingar innehållade orden wireless mobile communications.

  1. 21. The development of wireless infrastructure standards

    Författare :Fredrik Gessler; KTH; []
    Nyckelord :standards; standardisation; wireless communication; technologocial development; development process; DECT; WCDMA; 3G;

    Sammanfattning : This thesis treats the development of wirelessinfrastructure standards resulting from co-operative research,development and standardisation efforts. It strives to identifykey influences on this development process, and toconceptualise the process itself. LÄS MER

  3. 22. Multiport Antenna Systems for Space-Time Wireless Communications

    Författare :Nima Jamaly; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Spatial Correlation; Multiport Matching Efficiency; Multiport Antennas; Uncorrelated Multipath.; Richness Threshold; Multiport Effective Length; Pattern Overlap Matrix; Multiport Effective Area; Non-rich Multipath; Covariance Matrix; Predictor Antenna System; Correlated Multipath;

    Sammanfattning : Multiport antenna systems are indispensable part of modern wireless communication systems. Their crucial impact on the overall performance requires sufficient regard and dedication to a precise design and characterisation. This concern has been to a considerable extent addressed in the frame of the current thesis. LÄS MER

  4. 23. On Cooperative Communications and Its Application to Mobile Multimedia

    Författare :Quang Trung Duong; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : With the rapid growth of multimedia services, future generations of wireless communications require higher data rates and a more reliable transmission link while keeping satisfactory quality of service. In this respect, multipleinput multiple-output (MIMO) antenna systems have been considered as an efficient approach to address these demands by offering significant multiplexing and diversity gains over single-antenna systems without increasing requirements on radio resources such as bandwidth and power. LÄS MER

  5. 24. Scalable Multi-Standard Radio Baseband for Modern Wireless Communications

    Författare :Di Wu; Dake Liu; Bo Göransson; Linköpings universitet; []
    Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : Today, owing to the rapid advancement of technologies, people can cross the geographic gap and communicate without waiting for a week to receive a mail. Meanwhile, more and more wireless communications standards are emerging, as all claimed to make our life easier. LÄS MER

  7. 25. Determination of Viable Connectivity Technology for E-Learning in Tanzania : Case Study of Rural Secondary Schools

    Författare :Fatuma Simba; Blekinge Tekniska Högskola; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES;

    Sammanfattning : In response to different development challenges, Tanzania is striving to achieve her fourth attribute of the National Development Vision, i.e. to have a well educated and learning society by the year 2025. LÄS MER