This paper presents results on the capacity of large wireless systems with unknown fading. The system model consists of many independent transmitters who have to communicate with a large number of receivers via wireless links. The receivers in the system are connected to a wired backbone. The paper presents an upper bound on the per user capacity of the large network which allows for full cooperation among the receivers. The paper also presents constructive lower bounds on per user capacity which meet the upper bounds. Sometimes, the lower bounds require no receiver cooperation and sometimes they require medium distance receiver cooperation. The results of this paper are fundamental and result from the randomness of the fading present in the network rather than any peculiarities in the system model.
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