Near-Extremal Formally Self-Dual Even Codes of Lengths 24 and 32

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作者
T. Aaron Gulliver
Masaaki Harada
Takuji Nishimura
Patric R. J. Östergård
机构
[1] University of Victoria,Department of Electrical and Computer Engineering
[2] Yamagata University,Department of Mathematical Sciences
[3] Helsinki University of Technology,Department of Electrical and Communications Engineering
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Formally self-dual even codes; weight enumerators; 94B05;
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摘要
The weight enumerator of a formally self-dual even code is obtained by the Gleason theorem. Recently, Kim and Pless gave some restrictions on the possible weight enumerators of near-extremal formally self-dual even codes of length divisible by eight. In this paper, the weight enumerators for which there is a near-extremal formally self-dual even code are completely determined for lengths 24 and 32, by constructing new near-extremal formally self-dual codes. We also give a classification of near- extremal double circulant codes of lengths 24 and 32.
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页码:465 / 471
页数:6
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