Results 1 to 10 of about 13,741 (205)
Deriving Good LDPC Convolutional Codes from LDPC Block Codes [PDF]
IEEE Transactions on Information Theory, 2010 Low-density parity-check (LDPC) convolutional codes are capable of achieving excellent performance with low encoding and decoding complexity. In this paper we discuss several graph-cover-based methods for deriving families of time-invariant and time ...
Ali E. Pusane +4 more
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Decoder-in-the-Loop: Genetic Optimization-Based LDPC Code Design [PDF]
IEEE Access, 2019 LDPC code design tools typically rely on asymptotic code behavior and are affected by an unavoidable performance degradation due to model imperfections in the short length regime.
Ahmed Elkelesh +4 more
doaj +4 more sources
Design of Low-Density Parity-Check Code Pair for Joint Source-Channel Coding Systems Based on Graph Theory [PDF]
Entropy, 2023 In this article, a graph-theoretic method (taking advantage of constraints among sets associated with the corresponding parity-check matrices) is applied for the construction of a double low-density parity-check (D-LDPC) code (also known as LDPC code ...
Yijie Lv +3 more
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Multiplicatively Repeated Non-Binary LDPC Codes [PDF]
IEEE Transactions on Information Theory, 2011 We propose non-binary LDPC codes concatenated with multiplicative repetition codes. By multiplicatively repeating the (2,3)-regular non-binary LDPC mother code of rate 1/3, we construct rate-compatible codes of lower rates 1/6, 1/9, 1/12,... Surprisingly,
Charly Poulliat +4 more
core +5 more sources
Rate-Compatible, Bandwidth-Efficient, Low-Density Parity-Check (LDPC) Codes for Aeronautical Telemetry [PDF]
EntropyLow-density parity-check (LDPC) codes form part of the IRIG-106 standard and have been successfully deployed for the Telemetry Group version of shaped-offset quadrature phase shift keying (SOQPSK-TG) modulation.
Andrew D. Cummins +2 more
doaj +2 more sources
Analysis and Optimization of a General Linking Matrix for JSCC Scheme Based on Double LDPC Codes
Entropy, 2023 A key component of the joint source-channel coding (JSCC) scheme based on double low-density parity-check (D-LDPC) codes is the introduction of a linking matrix between the source LDPC code and channel LDPC code, by which the decoding information ...
Qiwang Chen +3 more
doaj +1 more source
Efficient Design of Read Voltages and LDPC Codes in NAND Flash Memory Using Density Evolution
IEEE Access, 2023 Low-density parity-check (LDPC) codes play an important role in the reliability enhancement of commercial NAND flash memory. Unfortunately, due to the requirement of the reading speed of NAND flash memory, the LDPC decoder will not obtain precise soft ...
Chatuporn Duangthong +2 more
doaj +1 more source
Asymmetric quantum LDPC codes [PDF]
2008 IEEE International Symposium on Information Theory, 2008 5 pages, 1 figure, 1 table, to appear in the Proceedings of the 2008 IEEE International Symposium on Information ...
Sarvepalli, Pradeep Kiran +2 more
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Randomly Punctured LDPC Codes [PDF]
IEEE Journal on Selected Areas in Communications, 2016 In this paper, we present a random puncturing analysis of low-density parity-check (LDPC) code ensembles. We derive a simple analytic expression for the iterative belief propagation (BP) decoding threshold of a randomly punctured LDPC code ensemble on the binary erasure channel (BEC) and show that, with respect to the BP threshold, the strength and ...
Mitchell, David G. M. +3 more
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, 2021 Στα ψηφιακά συστήματα, η πληροφορία κωδικοποιείται σε ακολουθίες από 0και 1, που αντιστοιχούν στις δύο δυνατές καταστάσεις των τρανζίστορ, on - off, τα οποία λειτουργούν ως διακόπτες. Το πλεονέκτημα αυτό έχει επιφέρει σημαντικέςαλλαγές στον τρόπο επεξεργασίας της πληροφορίας.
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