Convolutional codes over finite chain rings, MDP codes and their characterization
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In this paper, we develop the theory of convolutional codes over finite commutative chain rings. In particular, we focus on maximum distance profile (MDP) convolutional codes and we provide a characterization of these codes, generalizing the one known for fields. Moreover, we relate MDP convolutional codes over a finite chain ring with MDP convolutional codes over its residue field. Finally, we provide a construction of MDP convolutional codes over finite chain rings generalizing the notion of superregular matrices.
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