Sökning: "radio series"

Visar resultat 6 - 10 av 97 avhandlingar innehållade orden radio series.

  1. 6. Low phase noise voltage controlled micro- and millimeter wave oscillators

    Författare :Stefan Andersson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; radio; anti series; microstrip resonator; silicon bipolar transistor; amplitude limiter; cavity resonator; varactor; transposed gain; MESFET; automatic gain control; VCO; delay line; laser; RF; oscillation criteria; millimetre wave; oscillator; mm-wave; noise; multiplier; fibre optic; SAW; DRO; PLL; surface acoustic wave; Si BJT; 1 f noise; FM noise; HEMT; clipping diode; HBT; YIG sphere; device; terfenol; gunn diode; stabilised; YIG film; quarts crystal; phase locked loop; magnetostrictive; resonator; phase error; whispering gallery mode; sapphire resonator; Fabry-Perot resonator; PHEMT; microwave; HFET; phase noise; DR; dielectric resonator; PM noise; balanced oscillator; piezo electric; AGC; frequency discriminator;

    Sammanfattning : .... LÄS MER

  3. 7. Performance Analysis of Cognitive Radio Networks with Interference Constraints

    Författare :Hung Tran; Blekinge Tekniska Högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cognitive Radio Networks; Spectrum Underlay Access; Interference Constraints; Cognitive Cooperative Radio Networks;

    Sammanfattning : To support the rapidly increasing number of mobile users and mobile multimedia services, and the related demands for bandwidth, wireless communication technology is facing a potentially scarcity of radio spectrum resources. However, spectrum measurement campaigns have shown that the shortage of radio spectrum is due to inefficient usage and inflexible spectrum allocation policies. LÄS MER

  4. 8. Frisk och stark med skolradion : Pedagogik och retorik i hälsoprogram 1930-1959

    Författare :Titti Forsslund; Karin Stigbrand; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Rhetoric; school radio; educational broadcasting; history; pedagogy; health; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; Journalistik; Pedagogik;

    Sammanfattning : This dissertation deals with the history of the Swedish School Radio Broadcasting service from its start in the end of the 1920s through the 1950s. The focus of the research is radio programmes for health education. LÄS MER

  5. 9. Behavioral Modeling of Radio Frequency Transmitters

    Författare :Ali Soltani Tehrani; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Behavioral modeling; wireless communications; I Q imbalance; computational complexity; nonlinear models; Volterra series; transmitter; power amplifier; digital predistortion;

    Sammanfattning : The dependence of modern wireless communication systems on the fidelity ofthe transmitter has increased the importance of modeling these components.Behavioral modeling is a commonly used technique to find the input-outputrelationship of a system, without the need for the knowledge of the specificcomponents. LÄS MER

  7. 10. On the Performance Assessment of Advanced Cognitive Radio Networks

    Författare :Thi My Chinh Chu; Blekinge Tekniska Högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cognitive Radio Networks; Queueing Analysis; Cooperative Communications; Multiple-Input Multiple-Output MIMO ; Adaptive Modulation and Coding; Hybrid Interweave-Underlay Spectrum Access;

    Sammanfattning : Due to the rapid development of wireless communications together with the inflexibility of the current spectrum allocation policy, radio spectrum becomes more and more exhausted. One of the critical challenges of wireless communication systems is to efficiently utilize the limited frequency resources to be able to support the growing demand of high data rate wireless services. LÄS MER