Computing the MCS Index from RF Parameters
The MCS Index is a way of comparing and ranking modulation and coding schemes within, and to some degree between, PHY(s).
MCS is an interesting thing to track because it correlates with signal quality. The higher an MCS Index that is used in a transmission, the more susceptible to interference it is going to be.
Some systems do not report MCS directly as an index however. When working with such systems, one can still compute an MCS estimate directly. Here's how.