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Higher weights for codes over rings |
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| Authors: | Steven T. Dougherty Sunghyu Han Hongwei Liu |
| Affiliation: | 1. Department of Mathematics, University of Scranton, Scranton, PA, 18510, USA 2. School of Liberal Arts, Korea University of Technology and Education, Cheonan, 330-708, South Korea 3. Department of Mathematics, Huazhong Normal University, Wuhan, Hubei, 430079, China |
| Abstract: | A generalized definition of higher weights for codes over finite chain rings and principal ideal rings and bounds on the minimum higher weights in this setting are given. Using this we generalize the definition for higher MDS and MDR codes. Computationally, the higher weight enumerator of lifted Hamming and Simplex codes over mathbbZ4{mathbb{Z}_4}, the minimum higher weights for the lifted code of the binary [8,4,4] self-dual extended Hamming code, the lifted code of the ternary [12,6,6] self-dual Golay code and the lifted code of the binary [24,12,8] self-dual Golay code are given. Joint weight enumerators are used to produce MacWilliams relations for specific higher weight enumerators. |
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