  In this paper, we study scale-free state synchronization of discrete-time
homogeneous multi-agent systems (MAS) subject to unknown, nonuniform, and
arbitrarily large communication delays. The scale-free protocol utilizes
localized information exchange and is designed solely based on the knowledge of
the agents' model and does not require any information about the communication
network and the size of the network (i.e. number of agents).
