Results 81 to 90 of about 1,684,687 (171)
Block circulant graphs and the graphs of critical pairs of crowns
Electronic Journal of Graph Theory and Applications, 2019 In this paper, we provide a natural bijection between a special family of block circulant graphs and the graphs of critical pairs of the posets known as generalized crowns.
Rebecca E. Garcia +3 more
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Journal of Applied Mathematics, 2014 The row first-minus-last right (RFMLR) circulant matrix and row last-minus-first left (RLMFL) circulant matrices are two special pattern matrices. By using the inverse factorization of polynomial, we give the exact formulae of determinants of the two ...
Zhaolin Jiang, Nuo Shen, Juan Li
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AGGREGATED CIRCULANT MATRIX BASED LDPC CODES
, 2008 This paper presents a variation of circulant matrix based LDPC codes which allows more than one circulant identity matrix in one submatrix. The aggregated LDPC supports higher decoding throughput with small increase in datapath complexity.
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On Circulant Embedding for Gaussian Random Fields in R
Journal of Statistical Software, 2013 The high-dimensionality typically associated with discretized approximations to Gaussian random fields is a considerable hinderance to computationally efficient methods for their simulation.
Tilman M. Davies, David Bryant
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On the Generalization of g-Circulant Matrices for Cryptographic MDS Matrix Construction
IEEE AccessMaximum distance separable (MDS) matrices are widely used as linear diffusion layers in symmetric-key cryptography because of their optimal branch number.
Atif Ahmad Khan +3 more
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Encoders for block-circulant LDPC codes [PDF]
, 2009 Methods and apparatus to encode message input symbols in accordance with an accumulate-repeat-accumulate code with repetition three or four are disclosed. Block circulant matrices are used.
Thorpe, Jeremy C. +6 more
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QC-LDPC Codes Construction by Concatenating of Circulant Matrices as Block-Columns
International Journal of Information and Communication Technology Research, 2016 In this paper a new low complexity method for constructing binary quasi-cyclic low-density parity-check (QC-LDPC) codes is introduced. In the proposed method, each block-column of the parity check matrix H is made by a circulant matrix in a way that the ...
Mohammad Hesam Tadayon +1 more
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Best Conditioned Circulant Preconditioners
, 1992 In this paper, we discuss the solutions to a class of Hermitian positive definite system Ax = b by the preconditioned conjugate gradient method with circulant preconditioner C.
Raymond H. Chan, C.K. Wong
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General properties of c-circulant digraphs [PDF]
, 1988 A digraph is said to be a c-circulant if its adjacency matrix is c-circulant. This paper deals with general properties of this family of digraphs, as isomorphisms, regularity, strong connectivity, diameter and the relation between c-circulant digraphs ...
Fiol Mora, Miquel Àngel +2 more
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The eigenvalues and energy of integral circulant graphs [PDF]
Transactions on Combinatorics, 2012 A graph is called textit{circulant} if it is a Cayley graph on acyclic group, i.e. its adjacency matrix is circulant. Let $D$ be aset of positive, proper divisors of the integer $n>1$.
Mohsen Mollahajiaghaei
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