Results 21 to 30 of about 59,107 (223)

Cyclic and Quasi-Cyclic DNA Codes

open access: yesCoRR, 2021
draft, 16 ...
Adel Alahmadi   +4 more
openaire   +2 more sources

Quasi-cyclic constructions of quantum codes

open access: yesFinite Fields and Their Applications, 2018
We give sufficient conditions for self-orthogonality with respect to symplectic, Euclidean and Hermitian inner products of a wide family of quasi-cyclic codes of index two. We provide lower bounds for the symplectic weight and the minimum distance of the involved codes.
Carlos Galindo 0001   +2 more
openaire   +4 more sources

Quantum Quasi-Cyclic LDPC Codes [PDF]

open access: yes2007 IEEE International Symposium on Information Theory, 2007
In this paper, a construction of a pair of "regular" quasi-cyclic LDPC codes as ingredient codes for a quantum error-correcting code is proposed. That is, we find quantum regular LDPC codes with various weight distributions. Furthermore our proposed codes have lots of variations for length, code rate. These codes are obtained by a descrete mathematical
Manabu Hagiwara, Hideki Imai
openaire   +2 more sources

Novel Side-Channel Attacks on Quasi-Cyclic Code-Based Cryptography

open access: yesTransactions on Cryptographic Hardware and Embedded Systems, 2019
Chou suggested a constant-time implementation for quasi-cyclic moderatedensity parity-check (QC-MDPC) code-based cryptography to mitigate timing attacks at CHES 2016.
Bo-Yeon Sim   +5 more
doaj   +1 more source

On quasi-cyclic codes as a generalization of cyclic codes

open access: yesFinite Fields and Their Applications, 2012
In this article we see quasi-cyclic codes as block cyclic codes. We generalize some properties of cyclic codes to quasi-cyclic ones such as generator polynomials and ideals. Indeed we show a one-to-one correspondence between l-quasi-cyclic codes of length m and ideals of M_l(Fq)[X]/(X^m-1).
Morgan Barbier   +2 more
openaire   +5 more sources

Constructing Grith Eight GC-LDPC Codes Based on the GCD FLRM Matrix with a New Lower Bound

open access: yesSensors, 2022
By connecting multiple short, local low-density parity-check (LDPC) codes with a global parity check, the globally coupled (GC) LDPC code can attain high performances with low complexities.
Kun Zhu, Hongwen Yang
doaj   +1 more source

A construction of the high-rate regular quasi-cyclic LDPC codes

open access: yesEURASIP Journal on Wireless Communications and Networking, 2019
In this paper, a scheme to construct the high-rate regular quasi-cyclic low-density parity-check (QC-LDPC) codes is developed based on the finite geometry low-density parity-check (LDPC) codes.
Qi Meng   +3 more
doaj   +1 more source

The BER Performance of the LDPC-Coded MPPM over Turbulence UWOC Channels

open access: yesPhotonics, 2022
Turbulence-induced fading is a critical performance degrading factor for underwater wireless optical communication (UWOC) systems. In this paper, we propose a quasi-cyclic (QC) low-density parity-check (LDPC) code with multiple-pulse-position modulation (
Hongyan Jiang   +4 more
doaj   +1 more source

Applied quasi-cyclic LDPC codes from doubly-extended RS code and cyclic MDS code

open access: yesTongxin xuebao, 2008
Based on doubly-extended RS codes and cyclic MDS codes,two construction schemes were proposed for ap-plied quasi-cyclic LDPC codes whose Tanner graph is free of 4-cycles.In the first approach,all the nonzero codewords within a doubly-extended RS code ...
ZHANG Guo-hua, WANG Xin-mei
doaj   +2 more sources

A 38.64-Gb/s Large-CPM 2-KB LDPC Decoder Implementation for nand Flash Memories

open access: yesIEEE Open Journal of Circuits and Systems, 2022
The routing congestion over a QC-LDPC decoder with a large circular permutation matrix (CPM) size has long been an obstacle to high throughput designs.
Li-Wei Liu   +3 more
doaj   +1 more source

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