Figure 7: Saturation throughput as a function of the minimum contention window size , for three different values of and three values of the number of contending stations as noticed in the legend. The other parameters are as follows: and bytes. The optimal contention window size for each set of parameters is shown in the legend. Continuous curves represent the saturation throughput associated to the case , the dashed curves refer to the case , and the dotted curves are related to the case .