This data set contains the source codes for the simulations presented in the paper: J. Kim, D. Laurenson, and J. Thompson, "Centralized Random Backoff for Collision Resolution in Wi-Fi Networks," IEEE Transactions on Wireless Communications, 2017.Contents 1. ReadMe.txt - this file. 2. patchfile - contains the source codes to be patched to the NS-3.25 3. wifi-CRB.cc - test file which runs the simulation 4. RunCRB - shell script file for changing simulation parameters 5. 7 source files in the \sourceFiles\ folder - these can be used (instead of the patchfile) in case the patchfile does not work properly.