Results 51 to 60 of about 848,601 (293)
Quasi-cyclic Codes of Index 1.5
CoRR, 2015 We introduce quasi-cyclic codes of index 1.5, construct such codes in terms of polynomials and matrices; and prove that the quasi-cyclic codes of index 1.5 are asymptotically good.
Yun Fan, Hualu Liu
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Structure and performance of generalized quasi-cyclic codes [PDF]
Finite Fields and Their Applications, 2017 Generalized quasi-cyclic (GQC) codes form a natural generalization of quasi-cyclic (QC) codes. They are viewed here as mixed alphabet codes over a family of ring alphabets. Decomposing these rings into local rings by the Chinese Remainder Theorem yields a decomposition of GQC codes into a sum of concatenated codes.
Cem Güneri +5 more
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Skew quasi cyclic codes over 𝔽q + v𝔽q [PDF]
, 2019 In this work, skew quasi cyclic codes over [Formula: see text], where [Formula: see text] are considered. The generating set for one generator skew quasi cyclic codes over [Formula: see text] is also determined. We discuss a sufficient condition for one
N. Tuğba Özzaim +2 more
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Yantu gongcheng xuebao, 2023 A series of temperature-controlled triaxial tests are conducted on the deep-sea sediment from the Western trough of the South China Sea. The undrained heating effects on undrained shear strength, pore pressure and critical cyclic stress ratio are ...
SUN Anyuan 1, YANG Gang 1, REN Yubin 1, KONG Gangqiang 2, YANG Qing 1
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Some results on quasi-cyclic codes
Information and Control, 1969 Summary: In this paper a class of linear error-correcting block codes is investigated. These quasicyclic codes are closely related in structure to cyclic codes although they are not nearly as well understood. It is shown that an important subclass of the class of cyclic codes is almost equivalent to quasicyclic codes.
C. L. Chen +2 more
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Multilevel structured low-density parity-check codes [PDF]
, 2008 Low-Density Parity-Check (LDPC) codes are typically characterized by a relatively high-complexity description, since a considerable amount of memory is required in order to store their code description, which can be represented either by the connections ...
S. Chen +5 more
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A Flexible FPGA-Based Quasi-Cyclic LDPC Decoder
IEEE Access, 2017 Low-density parity check (LDPC) error correction decoders have become popular in diverse communications systems, owing to their strong error correction performance and their suitability to parallel hardware implementation. A great deal of research effort
Peter Hailes +4 more
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Quasi-isomorphisms and quasi-cyclic graphs [PDF]
We consider (directed) graphs. A graph morphism f : G -> H is called a quasi-isomorphism if each morphism from a cyclic graph C_n to H can be lifted uniquely along f, i.e. if (C_n,f) : (C_n,G)_Gph -> (C_n,H)_Gph is bijective for each n > 0. A subgraph is
Liu, Danning
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Spectral Analysis of Quasi-Cyclic Product Codes [PDF]
IEEE Transactions on Information Theory, 2016 This paper considers a linear quasi-cyclic product code of two given quasi-cyclic codes of relatively prime lengths over finite fields. We give the spectral analysis of a quasi-cyclic product code in terms of the spectral analysis of the row- and the column-code.
Alexander Zeh, San Ling
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One generator quasi-cyclic codes over [PDF]
, 2012 In this paper, we study quasi-cyclic codes over the ring R = F-2 + uF(2) = {0, 1, u, u + 1} where u(2) = 0. By exploring their structure, we determine the type of one generator quasi-cyclic codes over R and the size by giving a minimal spanning set.
Yildiz, Bahattin +5 more
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