Non-saturated throughput analysis for a QoS differentiated p-persistent CSMA protocol with the capture effect

Analysing the performance of WLANs in non-ideal channel conditions is a fundamental consideration in practical situations since wireless channels are error-prone. This paper presents a closed form analytical solution for the non-saturated throughput of a QoS differentiated p-persistent CSMA protocol that takes into account the capture effect in a Rayleigh multipath fading environment. The results show that the throughput performance with the capture effect depends on the absolute and relative p-persistent values, the total system offered load and relative offered loads per traffic type, as well as the thresholds for capture.