An important way for optimizing the architecture of multi-standard and multi-function communication systems is to employ reconfigurable resources instead of dedicated ones. One challenge in doing so is the automatic identification of resources within subsystems, which can be merged together to form reconfigurable components, at a very early design stage. In this paper, a formal model based identification technique is developed, which targets exactly this design challenge. A practical use of the proposed identification technique is illustrated by means of a multi-standard Zigbee transmitter system in the last part of the paper.