Comment at the top of ns-3.38/examples/wireless/wifi-mixed-network.cc

// This example shows how to configure mixed networks (i.e. mixed b/g and HT/non-HT) and how are
// performance in several scenarios.
//
// The example compares first g only and mixed b/g cases with various configurations depending on
// the following parameters:
// - protection mode that is configured on the AP;
// - whether short PPDU format is supported by the 802.11b station;
// - whether short slot time is supported by both the 802.11g station and the AP.
//
// The example then compares HT only and mixed HT/non-HT cases.
//
// The output results show that the presence of an 802.11b station strongly affects 802.11g
// performance. Protection mechanisms ensure that the NAV value of 802.11b stations is set correctly
// in case of 802.11g transmissions. In practice, those protection mechanism add a lot of overhead,
// resulting in reduced performance. CTS-To-Self introduces less overhead than Rts-Cts, but is not
// heard by hidden stations (and is thus generally only recommended as a protection mechanism for
// access points). Since short slot time is disabled once an 802.11b station enters the network,
// benefits from short slot time are only observed in a g only configuration.
//
// The user can also select the payload size and can choose either an UDP or a TCP connection.
// Example: ./ns3 run "wifi-mixed-network --isUdp=1"