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In this paper, we study in-order packet delivery in instantly decodable network coded systems for wireless broad- cast networks. We are interested in applications, in which the successful delivery of a packet depends on the correct reception of this packet and all its preceding packets. We formulate the problem of minimizing the number of undelivered packets to all receivers over all transmissions until completion as a stochastic shortest path (SSP) problem. Although finding the optimal packet selection policy using SSP is computationally complex, it allows us to draw guidelines for efficient packet selection policies. According to these guidelines, we design a simple heuristic packet selection algorithm. Simulation results illustrate that our proposed algorithm provides quicker packet delivery to the applications compared to the existing algorithms in the literature.

In order packet delivery in instantly decodable network coded systems over wireless broadcast