Written for mathematicians working with the theory of graph spectra, this (primarily
theoretical) book presents relevant results considering the spectral properties of regular …

Code equivalence problem plays an important role in coding theory and code based
cryptography. That is due to its significance in classification of codes and also construction …

In this paper we consider an error-detecting code based on linear quasigroups. We give a
proof that the code is linear. Also, we obtain the generator and the parity-check matrices of …

This book has been written to be of use to scientists working in the theory of graph spectra. It
may also attract the attention of graduate students dealing with the same subject area as …

Este trabalho propõe uma matriz de transformação armadilha que ao ser aplicada às
submatrizes geradoras, de um código convolucional de memória unitária, geram outras …

In the literature of Error Correcting Codes (ECC) there are many probabilistic
characterizations of different events that happen in the decoding process. Historically, the …

This chapter deals with techniques for the efficient and reliable transmission of data over
communications channels that may be subject to non-malicious errors. The general topic …

Neste trabalho será analisado uma decodificaçao utilizando um codificador convolucional
aplicando a decodificaçao abrupta pelo algoritmo de Viterbi. O algoritmo de Viterbi é um …

Essa trabalho se propõe, fazer a aplicação, e a analise da Transformação Armadilha-Matriz
de Hadamard em códigos convolucionais de mem´ oria unit´ aria (CCMU), c´ odigos do tipo …