I. Introduction
Coordinated distributed wireless systems [1] leverage signal co-processing at multiple access points (APs) to guarantee high connectivity, reduce inter-cell interference and improve the user experience. Connectivity is enhanced thanks to the shorter AP-to-user distance; the joint coherent transmission from geographically distributed APs yields macro-diversity gain; and the coordination enables APs to select transmit strategies jointly (by sharing channel state information) in order to reduce inter-cell interference.