Date Added: Jun 2010
In wireless ad hoc networks, multiple access interference is the limiting factor for the overall system performance. The lack of any central control unit necessitates a careful joint design of both, the physical and the MAC layer. Two promising technologies that address this problem are power control based cross-layer design and multiuser detection based cross-layer design. While approaches in the first category suppress the interference by power control at the transmitter side, approaches in the second cancel interference at the receiver with a technique called multiuser detection. In this paper, the authors compare two cross-layer approaches that are representative of power control based cross-layer design and multiuser detection based cross-layer design, respectively.