Essays about: "gallager"

Found 3 essays containing the word gallager.

  1. 1. Enhancing the Decoding of Short LDPC Codes with Stochastic Sequences

    University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

    Author : Yuyuan Gu; Haien Li; [2021]
    Keywords : 5G; channel coding; LDPC codes; stochastic decoding; stochastic computation; Technology and Engineering;

    Abstract : Low-Density Parity-Check (LDPC) codes are one of the most popular codes used in nowadays’ communication due to their high coding efficiency at low decoding complexity. With these characteristics, LDPC codes are suitable for high-speed information transmission systems. READ MORE

  3. 2. Evaluation of flexible SPA based LPDC decoder using hardware friendly approximation methods

    University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

    Author : Afshin Seraj; Deepak Yadav; [2017]
    Keywords : forward-backward; SPA; soft-xor; sum product algorithm; approximation; decoder; LDPC; Technology and Engineering;

    Abstract : Due to computation-intensive nature of LDPC decoders, a lot of research is going towards efficient implementation of their original algorithm (SPA). As "Min-Sum" approximation is basically an overestimation of SPA, this thesis investigates more accurate, yet area efficient, approximations of SPA, to select an optimum one. READ MORE

  4. 3. Low-density Parity-Check decoding Algorithms

    University essay from Institutionen för systemteknik

    Author : Florent Pirou; [2004]
    Keywords : Electronics; LDPC; Low-density parity-check codes; channel coding; FEC; iterative algorithm; Gallager; message-passing algorithm; belief propagation algorithm; ; Elektronik;

    Abstract : Recently, low-density parity-check (LDPC) codes have attracted much attention because of their excellent error correcting performance and highly parallelizable decoding scheme. However, the effective VLSI implementation of and LDPC decoder remains a big challenge and is a crucial issue in determining how well we can exploit the benefits of the LDPC codes in the real applications. READ MORE