Sökning: "coding"

Visar resultat 16 - 20 av 1034 avhandlingar innehållade ordet coding.

  1. 16. 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

  3. 17. Source and Channel Coding for Audiovisual Communication Systems

    Författare :Moo Young Kim; Bastiaan Kleijn; Richard Heusdens; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Telekommunikation; Information theory; high-rate theory; source coding; channel coding; quantization; Telekommunikation; Telecommunication; Telekommunikation;

    Sammanfattning : Topics in source and channel coding for audiovisual communication systems are studied. The goal of source coding is to represent a source with the lowest possible rate to achieve a particular distortion, or with the lowest possible distortion at a given rate. Channel coding adds redundancy to quantized source information to recover channel errors. LÄS MER

  4. 18. Coding, Computing, and Communication in Distributed Storage Systems

    Författare :Majid Gerami; Ming Xiao; Camilla Hollanti; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Coding; Distributed Systems; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : Conventional studies in communication networks mostly focus on securely and reliably transmitting  data from a source node (or multiple source nodes) to multiple destinations. A more general problem appears when the destination nodes are interested in obtaining  functions of the data available in distributed source nodes. LÄS MER

  5. 19. On speech spectrum coding : interframe memory and perception

    Författare :Fredrik Nordén; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; speech coding; memory based quantization; distortion measure; vector quantization; spectrum coding; speech perception;

    Sammanfattning : .... LÄS MER

  7. 20. On dynamic bit allocation in CELP speech coding

    Författare :Johan Sjöberg; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; excitation coding; dynamic bit allocation; long term predivtion; speech coding; code excited linear prediction; vector quantization;

    Sammanfattning : .... LÄS MER