Sökning: "coding"

Visar resultat 11 - 15 av 961 avhandlingar innehållade ordet coding.

  1. 11. Coding and Modulation for Wideband CDMA

    Författare :Ola Wintzell; Institutionen för elektro- och informationsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; turbo codes.; Electronics and Electrical technology; channel coding; impulse radio; coordinated transmission; pre-coding; cellular radio capacity; Direct sequence code division multiple access DS-CDMA ; pulse position hopped code division multiple access PPH-CDMA ; Elektronik och elektroteknik; Telecommunication engineering; Telekommunikationsteknik;

    Sammanfattning : Wideband CDMA (Code Division Multiple Access) is one of the key technologies for future mobile communication systems. This thesis studies various coding and transmission methods for wideband CDMA communications. In a cellular environment, the system performance depends on the interference from other cells. LÄS MER

  2. 12. Soft decoding vector quantization for noisy channels

    Författare :Mikael Skoglund; Chalmers University of Technology; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; combined source-channel coding; vector quantization; source coding; channel coding; image coding;

    Sammanfattning : .... LÄS MER

  3. 13. Coding to cure : NMR and thermodynamic software applied to congenital heart disease research

    Författare :Markus Niklasson; Patrik Lundström; Malin Lindqvist Appell; Björn Wallner; Katja Petzold; Malmendal Anders; Linköpings universitet; []

    Sammanfattning : Regardless of scientific field computers have become pivotal tools for data analysis and the field of structural biology is not an exception. Here, computers are the main tools used for tasks including structural calculations of proteins, spectral analysis of nuclear magnetic resonance (NMR) spectroscopy data and fitting mathematical models to data. LÄS MER

  4. 14. Embedded image coding

    Författare :David Nister; Chalmers University of Technology; []

    Sammanfattning : .... LÄS MER

  5. 15. A Universal Source Coding Perspective on PPM

    Författare :Jan Åberg; Institutionen för elektro- och informationsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; coding with side information; multinomial estimation; maximum probability codes; MDL estimation; PPM; hierarchical source coding; universal source coding; text compression; lossless data compression; Automation; robotics; control engineering; Automatiska system; robotteknik; reglerteknik;

    Sammanfattning : The PPM (Prediction by Partial Matching) family of text compression algorithms has several members that have shown to be very efficient in practice. This thesis treats PPM algorithms from an information-theoretical point of view, based on results and methods from universal source coding theory. LÄS MER