How Physical Carrier Sense Affects System Throughput in IEEE 802.11 Wireless Networks

In recent years, wireless ad hoc networks have become increasingly popular in both military and civilian applications due to their capability of building networks without the need for a pre-existing infrastructure. While a number of studies have been carried out to study the performance of IEEE 802.11 DCF in single-cell wireless LANs, the analysis of IEEE 802.11 DCF in multi-hop wireless networks with consideration of the effects of physical carrier sense, SINR, and collision caused by accumulative interference has been lacking. In this paper, the authors substantially extend Cal´ί's work and rigorously model, with all these effects considered, channel activities governed by IEEE 802.11 DCF in multi-hop wireless networks.