Infrastructure networks, such as cellular systems, are expected to benefit from both multicell processing (cooperation at the base station level) and relaying (cooperation at the user level). This paper provides a brief review of recent results concerning the analysis of such technologies, under the practical assumption that both multicell processing and user cooperation are enabled by error-free but limited-capacity inter-base station and inter-user links, respectively. The focus is on non-fading uplink and downlink channels based on Wyner-type cellular models. The analytical treatment enhances the insight into the potential and the limitations imposed by capacity constraints on the performance gains provided by cooperative (distributed MIMO) techniques.
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