Sökning: "decoders"

Visar resultat 1 - 5 av 19 avhandlingar innehållade ordet decoders.

  1. 1. Reduced Receivers for Faster-than-Nyquist Signaling and General Linear Channels

    Detta är en avhandling från Tryckeriet i E-huset, Lunds universitet

    Författare :Adnan Prlja; Lunds universitet.; Lund University.; [2013]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Digital data transmission; receivers; decoders; channel modeling; intersymbol interference; ISI; MIMO; Faster-than-Nyquist signaling; complexity reduction; observation models; BCJR algorithm; turbo equalization; iterative detection; channel shortening;

    Sammanfattning : Popular Abstract in Swedish Dagens samhälle är allt mer beroende av elektroniska hjälpmedel så som smarta telefoner, läsplattor, datorer osv. Prestandakraven ökar i en allt högre takt och därför måste även den bakomliggande teknologin följa samma trend. LÄS MER

  2. 2. On Bit-Wise Decoders for Coded Modulation

    Detta är en avhandling från Tryckeriet i E-huset, Lunds universitet

    Författare :Mikhail Ivanov; [2013]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; bit-error probability; L-values; labeling; Gray code; coded modulation; log-likelihood ratio; maximum likelihood decoder; Additive white Gaussian noise; quadrature amplitude modulation.; interleaver; flat fading channel; pairwise error probability;

    Sammanfattning : Coded modulation is a technique that emerged as a response to the growing demand for high data rates. It was devised to achieve high spectral efficiency with high reliability, potentially approaching Shannon’s capacity. The main idea of coded modulation consists in combining error-correcting coding with higher-order modulation. LÄS MER

  3. 3. Bit-Wise Decoders for Coded Modulation and Broadcast Coded Slotted ALOHA

    Detta är en avhandling från Tryckeriet i E-huset, Lunds universitet

    Författare :Mikhail Ivanov; [2016]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; mutual information; vehicular communications; bit-interleaved coded modulation; error floor; slotted ALOHA; medium access control; All-to-all broadcast;

    Sammanfattning : This thesis deals with two aspects of wireless communications. The first aspect is about efficient point-to-point data transmission. To achieve high spectral efficiency, coded modulation, which is a concatenation of higher order modulation with error correction coding, is used. LÄS MER

  4. 4. Low Complexity Techniques for Low Density Parity Check Code Decoders and Parallel Sigma-Delta ADC Structures

    Detta är en avhandling från Linköping : Linköping University Electronic Press

    Författare :Anton Blad; Linköpings universitet.; Linköpings universitet.; [2011]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY Electrical engineering; electronics and photonics Electronics; TEKNIKVETENSKAP Elektroteknik; elektronik och fotonik Elektronik;

    Sammanfattning : Since their rediscovery in 1995, low-density parity-check (LDPC) codes have received wide-spread attention as practical capacity-approaching code candidates. It has been shown that the class of codes can perform arbitrarily close to the channel capacity, and LDPC codes are also used or suggested for a number of important current and future communication standards. LÄS MER

  5. 5. Analysis of Relay Channels and Improved Iterative Decoders for Turbo-Coded Decode-and-Forward Relay Channels

    Detta är en avhandling från Linköping : Linköping University Electronic Press

    Författare :Khoa Huynh; [2011]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; detect-and-forward; maximum a posteriori; decode-and-forward; Maximum likelihood; iterative decoder.; relay channels; equivalent SNR; upper bound;

    Sammanfattning : Three-node relay channels which consist of a source, a relay and a destinationare considered in this thesis. In the first part, an uncoded relay channelis studied. LÄS MER