Search for dissertations about: "Trellis codes"

Showing result 1 - 5 of 17 swedish dissertations containing the words Trellis codes.

  1. 1. On the Design of Turbo Codes

    University dissertation from Department of Applied Electronics, Lund University

    Author : Johan Hokfelt; Lunds universitet.; Lund University.; [2000]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Channel coding; concatenated codes; convolutional codes; iterative decoding; interleaver design; trellis termination; Electronics; Turbo codes; Elektronik;

    Abstract : This thesis is about Turbo codes - codes constructed via parallel concatenation of two recursive convolutional encoders linked by an interleaver. The focus of the work is on the understanding and design of Turbo codes. READ MORE

  2. 2. On Tailbiting Codes from Convolutional Codes

    University dissertation from Department of Information Technology, Lund Univeristy

    Author : Per Ståhl; Lunds universitet.; Lund University.; [2001]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; computer technology; Systems engineering; Teknik; Technological sciences; encoder inverse; systematic feedback encoder; state complexity; trellis; tailbiting termination method; tailbiting code; channel coding; convolutional code; Data- och systemvetenskap; Informatics; systems theory; Informatik; systemteori;

    Abstract : Popular Abstract in Swedish Denna avhandling behandlar en speciell typ av felrättande koder som kallas tailbitingkoder. Syftet med en felrättande kod är att korrigera fel som kan uppkomma på grund av brus och störningar då digital information överförs från sändare till mottagare... READ MORE

  3. 3. Designing Space-Time Codes Using Orthogonal Designs

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Girish Ganesan; Uppsala universitet.; Uppsala universitet.; [2002]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Space-time codes; Orthogonal designs; Amicable orthogonal designs; Differential detection; Trellis codes; Turbo codes; TECHNOLOGY Information technology Signal processing; TEKNIKVETENSKAP Informationsteknik Signalbehandling; Signal Processing; Signalbehandling;

    Abstract : This thesis deals with coding schemes for systems with multiple transmit antennas. The problem of finding optimal transmission schemes for the case when the transmitter knows the channel and the case when the transmitter does not know the channel are considered. READ MORE

  4. 4. Multilevel Coding Based on Convolutional Codes

    University dissertation from Dept. of Information Theory, Lund University, Box 118, S-221 00 LUND

    Author : Joakim Persson; [1996]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; computer technology; QAM; Systems engineering; PSK; quantization schemes; concatenated codes; rate design; cutoff rate; convolutional codes; Multilevel coding; trellis coded modulation; Data- och systemvetenskap;

    Abstract : .... READ MORE

  5. 5. An Encounter with Convolutional Codes over Rings

    University dissertation from Department of Information Technology, Lund Univeristy

    Author : Emma Wittenmark; Lunds universitet.; Lund University.; [1998]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Telekommunikationsteknik; Data- och systemvetenskap; Telecommunication engineering; computer technology; direct sum decomposition of a ring; Systems engineering; minimal trellis; generator matrix properties; code properties; convolutional codes; codes over rings;

    Abstract : Convolutional codes is one possibility when there is a need for error-correcting codes in communication systems. Using convolutional codes over rings is a relatively new approach. READ MORE