This paper compares the theoretical and the experimental
throughput of an 802.11 adhoc network implementing Quality of
Service (QoS) mechanisms. The theoretical model provides the
throughput of each Access Category (AC) of each node in saturated
and non-saturated traffic conditions. The experimental setup is described in detail to enable the reproduction of
the presented measurements. This setup adopts the widely used
Multiband Atheros Driver for Wireless Fidelity (MADWiFi), which, however, provides the QoS option for
centralized operations only. Hence, this study describes the adjustments
to the MADWiFi source code that guarantee the control of the QoS
parameters in adhoc mode.