講演抄録/キーワード |
講演名 |
2005-05-26 13:50
The Local Weight Distributions of Transitive Invariant Codes and Their Punctured Codes ○Kenji Yasunaga・Toru Fujiwara(Osaka Univ.) |
抄録 |
(和) |
The local weight distribution is the weight distribution of zero neighbors in a code. A zero neighbor is a codeword whose Voronoi region shares a facet with that of the all-zero codeword. The local weight distribution is valuable
for an error performance analysis of the code. In this paper, some relations are shown for the local weight distributions of transitive invariant codes and their punctured codes. Extended primitive BCH codes and Reed-Muller codes are transitive invariant codes. Only-odd decomposable codewords are key codewords in those relations. A method for finding the only-odd decomposable codewords is also presented. |
(英) |
The local weight distribution is the weight distribution of zero neighbors in a code. A zero neighbor is a codeword whose Voronoi region shares a facet with that of the all-zero codeword. The local weight distribution is valuable
for an error performance analysis of the code. In this paper, some relations are shown for the local weight distributions of transitive invariant codes and their punctured codes. Extended primitive BCH codes and Reed-Muller codes are transitive invariant codes. Only-odd decomposable codewords are key codewords in those relations. A method for finding the only-odd decomposable codewords is also presented. |
キーワード |
(和) |
局所重み分布 / 推移不変符号 / パンクチャード符号 / only-odd decomposable codeword / / / / |
(英) |
local weight distribution / transitive invariant code / punctured code / only-odd decomposable codeword / / / / |
文献情報 |
信学技報, vol. 105, no. 84, IT2005-14, pp. 7-12, 2005年5月. |
資料番号 |
IT2005-14 |
発行日 |
2005-05-19 (IT) |
ISSN |
Print edition: ISSN 0913-5685 |
PDFダウンロード |
|