On the Optimization of the IEEE 802.11 DCF: A Cross-Layer Perspective

Figure 4

Behavior of the aggregate throughput as a function of 𝜆, for five different values of the packet size as noticed in the legend. In each simulated scenario there are 𝑁=10 contending stations transmitting at 1 Mbps. Other parameters are as follows: 𝑊₀=32, 𝑃_𝑒=0, and 𝑚=5. The values of 𝜆_𝑐 are noticed on the abscissa, whereas the horizontal lines, labeled by 𝑆_𝑚, represent the maximum aggregate throughput (link capacity) evaluated through (13) in each considered scenario. All the thick curves refer to 𝐸[PL]=128 bytes, and various packet error probabilities as noticed in the figure.