Yoram Haddad Gwendal Le Grand Throughput analysis of the ieee 802.11e edca on a noisy channel in unsaturated mode. 78-81 2007 WMuNeP http://doi.acm.org/10.1145/1298216.1298234 conf/mswim/2007pm db/conf/mswim/wmunep2007.html#HaddadG07