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A classification of posets admitting the MacWilliams identity

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2 Author(s)
Hyun Kwang Kim ; Dept. of Math., Pohang Univ. of Sci. & Technol., South Korea ; Dong Yeol Oh

In this paper, all poset structures that admit the MacWilliams identity are classified, and the MacWilliams identities for poset weight enumerators corresponding to such posets are derived. It is proved that being a hierarchical poset is a necessary and sufficient condition for a poset to admit the MacWilliams identity. An explicit relation is also derived between the P-weight distribution of a hierarchical poset code and the P~-weight distribution of the dual code.

Published in:

IEEE Transactions on Information Theory  (Volume:51 ,  Issue: 4 )