Sökning: "Spectrum Hole"

Visar resultat 21 - 24 av 24 uppsatser innehållade orden Spectrum Hole.

  1. 21. Few-Particle Effects in Semiconductor Quantum Dots: Spectrum Calculations on Neutral and Charged Exciton Complexes

    Master-uppsats, Halvledarmaterial

    Författare :Kuang-Yu Chang; [2010]
    Nyckelord :Quantum Dots Exciton Spectrum;

    Sammanfattning : It is very interesting to probe the rotational symmetry of semiconductor quantum dots for quantum information and quantum computation applications. We studied the effects of rotational symmetry in semiconductor quantum dots using configuration interaction calculation. LÄS MER

  3. 22. Few-Particle Effects in Semiconductor Quantum Dots: Spectrum Calculations on Neutral and Charged Exciton Complexes

    Master-uppsats, Halvledarmaterial

    Författare :Kuang-Yu Chang; [2010]
    Nyckelord :Quantum Dots Exciton Spectrum;

    Sammanfattning : It is very interesting to probe the rotational symmetry of semiconductor quantum dots for quantum information and quantum computation applications. We studied the effects of rotational symmetry in semiconductor quantum dots using configuration interaction calculation. LÄS MER

  4. 23. DETECTION OF VACANT FREQUENCY BANDS IN COGNITIVE RADIO

    Master-uppsats, Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Författare :Ahmed Rehan; Ghous Yasir Arfat; [2010]
    Nyckelord :Cognitive radio; Spectrum Sensing ; Vacant Frequency bands; Spectrum Hole; Spectrum mobility; Cooperation strategies;

    Sammanfattning : Cognitive radio is an exciting promising technology which not only has the potential of dealing with the inflexible prerequisites but also the scarcity of the radio spectrum usage. Such an innovative and transforming technology presents an exemplar change in the design of wireless communication systems, as it allows the efficient utilization of the radio spectrum by transforming the capability to dispersed terminals or radio cells of radio sensing, active spectrum sharing and self-adaptation procedure. LÄS MER

  5. 24. Photochromic molecules in polymer switch diodes

    Magister-uppsats, Linköpings universitet/Institutionen för teknik och naturvetenskap

    Författare :Feng-I Tai; [2006]
    Nyckelord :photochromic; polymer diode; switchable traps;

    Sammanfattning : Photochromism has been investigated extensively during recent years. The large interest for information storage in memory applications is associated with the bi-stable character of the photochromism phenomena. LÄS MER