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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Group rings in coding theory
 Horáček, Jan ; Žemlička, Jan (advisor) ; Šťovíček, Jan (referee)
This work is focused on linear error-correcting codes in group rings. The basic introduc- tion to group rings and to coding in group rings is given. By code we mean a R-submodul, which generalizes the definition of the code as an ideal. We describe unit-derived and zero- divisor codes. We test paramaters of unit-derived codes. The construction of LDPC codes without short cycles is explained. Except from the derivation of the generator and check matrix we focus on algebraic properties of codes and group rings. We also deal with the self-dual codes, reversible codes or number of units in a finite group algebra of a cyclic group. 1
Detailed record
Group rings in coding theory
 Horáček, Jan ; Žemlička, Jan (advisor) ; Šťovíček, Jan (referee)
This work is focused on linear error-correcting codes in group rings. The basic introduc- tion to group rings and to coding in group rings is given. By code we mean a R-submodul, which generalizes the definition of the code as an ideal. We describe unit-derived and zero- divisor codes. We test paramaters of unit-derived codes. The construction of LDPC codes without short cycles is explained. Except from the derivation of the generator and check matrix we focus on algebraic properties of codes and group rings. We also deal with the self-dual codes, reversible codes or number of units in a finite group algebra of a cyclic group. 1
Detailed record

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