Multiuser Detection
Traffic Analysis and Design of Wireless IP Networks
Traffic Analysis and Design of Wireless IP Networks
DSMA: an access method for MIMO ad hoc networks based on distributed scheduling
Proceedings of the 2006 international conference on Wireless communications and mobile computing
Impact of Power Control on Performance of IEEE 802.11 Wireless Networks
IEEE Transactions on Mobile Computing
Cross-layer design for the physical, MAC, and link layer in wireless systems
EURASIP Journal on Advances in Signal Processing - Special issue on signal processing applications in network intrusion detection systems
New media access protocols for wireless ad hoc networks based on cross-layer principles
IEEE Transactions on Wireless Communications
IEEE Journal on Selected Areas in Communications
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In wireless ad hoc networks, cross-layer design aims at reducing multiple access interference and thus obtaining a higher spatial reuse. In order to identify the most suitable solution for future wireless systems, we compared the aggregate throughput achieved by two types of cross-layer designs. While the first approach suppresses the interference by power control at the transmitter side, the second cancels interference at the receiver with a technique called multiuser detection. It turned out that applying power control as basis for cross-layer design in very high traffic density scenarios can result in even worse performance than applying no cross-layer design at all. The gains achieved by the multiuser detection based cross-layer design were shown to be based on the interaction between physical and MAC layer, and not only on the more advanced physical layer technique. However, to investigate the provided quality of service, also other criteria have to be taken into account. Thus, in this paper, we investigate delay and fairness for both cross-layer designs. We show that power control based cross-layer design leads not only to lower aggregate throughput, but also to a lower offered quality of service.