María Victoria Herranz (University Miguel Hernández of Elche), Diego Napp (Universidade de Aveiro) and Carmen Perea (University Miguel Hernández of Elche).

Abstract. In this paper we study two different concatenation schemes of twodimensional (2D) convolutional codes. We consider Fornasini–Marchesini state space representation of 2D linear systems to describe our concatenated codes. Also we present upper and lower bounds on the distance of the proposed concatenated codes.

Keywords. 2D convolutional code; Concatenated convolutional code; Marchesini– Fornasini 2D model; Minimum distance; Free distance