We analyze fading interference relay networks where M single-antenna source-destination terminal pairs communicate concurrently and in the same frequency band through a set of if single-antenna relays using half-duplex two-hop relaying. The relays do not have channel state information, perform amplify-and-forward (AF) relaying, and the destination terminals can cooperate and perform joint decoding. Our main results are as follows: 1. We compute the per source-destination terminal pair capacity for M, K → ∞, with K/M → β fixed, using tools from random matrix theory. 2. We show that for β → ∞, the AF relay network is turned into a point-to-point multiple-input multiple-output link and thus extend the result found previously for the finite M, K → ∞ case in [1] to the M, K → ∞ case.
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