Results 151 to 160 of about 21,382 (243)
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IEEE Transactions on Very Large Scale Integration (VLSI) Systems, 2021
This article proposes an encoding method based on a two-step encoding algorithm for the 12 quasi-cyclic (QC)-low-density parity-check (LDPC) (QC-LDPC) codes specified in the IEEE 802.11n/ac/ax standards.
A. Mahdi +2 more
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This article proposes an encoding method based on a two-step encoding algorithm for the 12 quasi-cyclic (QC)-low-density parity-check (LDPC) (QC-LDPC) codes specified in the IEEE 802.11n/ac/ax standards.
A. Mahdi +2 more
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Some Short-Length Girth-8 QC-LDPC Codes From Primes of the Form t2 + 1
IEEE Communications Letters, 2022We propose a simple algebraic construction for girth-8 regular QC-LDPC codes of short lengths, a few hundreds, based on the square matrix from some prime integers of the form $t^{2}+1=P$ and a multiplication table method. We generalize the conventional
Inseon Kim, T. Kojima, HongâYeop Song
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Constructions of Girth-Eight QC-LDPC Codes with Dual-Diagonal Structure Based on GCD Framework
International Conference on Wireless Communications and Signal Processing, 2023A novel class of quasi-cyclic (QC) low-density parity-check (LDPC) codes is explicitly proposed without 4-cycles and 6-cycles via the greatest-common-divisor (GCD) framework.
Guohua Zhang +3 more
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Density Evolution Analysis for 5G NR Quasi-Cyclic Low Density Parity Check (QC-LDPC) Codes
2023 International Conference on Artificial Intelligence, Blockchain, Cloud Computing, and Data Analytics (ICoABCD), 2023In this paper, we analyze the performances of the fifth telecommunication generation (5G) new radio (NR) quasi-cyclic (QC) low-density parity check (QC-LDPC) codes via density evolution (DE) for base graph 2 (BG2) over binary erasure channel (BEC).
Wahidin, Khoirul Anwar, N. Adriansyah
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Shortening for irregular QC-LDPC codes
IEEE Communications Letters, 2009Shortening is a technique to obtain codes of shorter length and lower rate from a given LDPC code by putting infinite reliability on some variable nodes, whose positions are assumed to be available to both encoder and decoder. In this paper, we propose a shortening algorithm suitable for irregular QC-LDPC codes. The efficiency of the proposed algorithm
Xiaojian Liu +2 more
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QC-LDPC Codes With Large Column Weight and Free of Small Size ETSs
IEEE Communications Letters, 2022An approach to improve the performance of QC-LDPC codes is the removal of harmful trapping sets by increasing the girth. However, constructing these LDPC codes with large column weights and girth more than 8 is not easy.
F. Amirzade +2 more
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Construction of QC-LDPC Codes from Sidon Sequence Using Permutation and Segmentation
IEEE Communications Letters, 2022By utilizing a Sidon sequence, two new methods are proposed to construct quasi-cyclic (QC) low-density parity-check (LDPC) codes. The first method yields a QC-LDPC code without 4-cycles and the second method gives a QC-LDPC code without 4-cycles and 6 ...
Lintao Zhang, Juhua Wang
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A new construction of UEP QC-LDPC codes
2010 IEEE International Symposium on Information Theory, 2010In this paper, a new construction of quasi-cyclic low-density parity-check (QC-LDPC) codes for unequal error protection (UEP) is proposed. We first give a new class of UEP block codes. QC-LDPC codes with binomial-term parity-check matrices which can avoid girths less than 8 and achieve an enlarged upper bound on the minimum distance are also introduced.
Chi-Jen Wu +2 more
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A Design of Layered Decoding for QC-LDPC Codes Based on Reciprocal Channel Approximation
International Symposium on Information Theory, 2022This paper presents an analytically designed layered decoding algorithm for quasi-cyclic low-density parity-check (QC-LDPC) codes in the 5th Generation (5G) New Radio (NR) mobile communication system.
Min Jang +5 more
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Mutual Information-Maximizing Quantized Layered Min-Sum Decoding of QC-LDPC Codes
Global Communications Conference, 2022In this paper, we propose a mutual information-maximizing quantized layered min-sum (MIM-QLMS) decoder for quasi-cyclic low-density parity-check (QC-LDPC) codes.
Cheng Lv +5 more
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