You can get more technical details in the scientific paper: Julien Herzen, Albert Banchs, Vsevolod Shneer and Patrick Thiran. CSMA/CA in Time and Frequency Domains in IEEE ICNP, 2015. <a href="http://www.hrzn.ch/publications/tf-icnp15.pdf" rel="nofollow">http://www.hrzn.ch/publications/tf-icnp15.pdf</a>