Improve efficiency of ad hoc networks with MIMO communication and cross layer MAC design

In this paper, we start from the analysis of the performance of the PHY layer in a multiuser context and derive the implication that this PHY layer would be on the design of higher layer protocols. We continue by designing a MAC layer that makes use of back-and-forth information exchanges with the PHY layer in order to perform multiuser detection. The whole process is driven in order to guarantee a satisfactory throughput and yet protect the wanted signals through active interference detection and cancellation.