Performance and cross-layer design of CSMA for wireless networks with multipacket reception

With the improvement of the physical layer´s ability to decode more than one packets from multiple users, the classical collision model no longer applies and a cross-layer approach should be employed when designing multiple access protocols. This is especially the case for CSMA communications, which previously have not been studied under a multipacket reception (MPR) model. Since CSMA is used in the IEEE 802.11 wireless LAN standards and other wireless networks, improving its performances could have widespread benefits. In here, we investigate the impact of MPR on CSMA and propose a performance-improving cross-layer designed CSMA protocol for wireless networks.