Sökning: "broadband"

Visar resultat 11 - 15 av 266 avhandlingar innehållade ordet broadband.

  1. 11. On 60GHz Wireless Communication Systems

    Författare :Maxime Flament; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; scenario; DQPSK; mm-wave; broadband; MMIC; propagation; interference; shadowing; OFDM; 4:th Generation Wireless 4GW ; mobile; 60 GHz;

    Sammanfattning : The consumer of the telecommunication services of tomorrow will expectto receive the same services in a wireless fashion as he today receivesfrom a fixed network. These services require reliable high data rate. LÄS MER

  3. 12. On the weightless economy: Evaluating ICT sectors in the European, Asian and African regions

    Författare :Ibrahim Kholilul Rohman; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; probit; Gini coefficient; Europe; economic growth; ICT sectors; panel cointegration; diffusion; Asia; Africa; panel data; broadband; input-output; production; weightless economy; cellular;

    Sammanfattning : One of the most distinctive characteristics of the weightless economy is the increasingly important role of the Information and Communication Technology (ICT) sectors, which, according to the OECD (2009), consist of ICT products and media and content products. The ICT sectors have been identified as contributing significantly to the economy through production, measured by the value of the ICT outputs produced and the spillover effects to the other sectors, and the diffusion due to the higher penetration rate of ICT products and services and the impact of the end-users. LÄS MER

  4. 13. Frequency Reconfigurable and Linear Power Amplifiers Based on Doherty and Varactor Load Modulation Techniques

    Författare :William Hallberg; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; gallium nitride GaN ; wideband; Class-J; linear; microwave; radio frequency RF ; Doherty; broadband; AM AM; silicon carbide SiC ; bandwidth; power amplifier PA ; AM PM; varactor; dynamic load modulation DLM ; fifth generation mobile networks 5G ; energy efficiency;

    Sammanfattning : In future mobile communication networks, there will be a shift towards higher carrier frequencies and highly integrated multiple antenna systems. The system performance will largely depend on the available RF hardware. As such, RF power amplifiers (PAs) with improved efficiency, linearity, and bandwidth are needed. LÄS MER

  5. 14. Being private and public at home : an architectural perspective on video mediated communication in smart homes

    Författare :Stefan Junestrand; Ulf Keijer; Ullmark Ullmark; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Environmental engineering and architecture; architecture; broadband; design; design theory; digital; Samhällsbyggnadsteknik och arkitektur; Civil engineering and architecture; Samhällsbyggnadsteknik och arkitektur;

    Sammanfattning : Video mediated communication (VMC) is a two way real time audio and video communication between remote places. VMC has the potential to be applied favourably to many activities, services and functions in smart homes. LÄS MER

  7. 15. Strategies for enhancing consumer interaction in electronic retailing

    Författare :Christian Persson; Nils Enlund; Arne Krokan; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; e-commerce; consumers; interaction; autonomous agents; personalization; hypermedia interface; broadband; multi-channel retailing.;

    Sammanfattning : .... LÄS MER