What is and what it means 802.11n MCS
In the wireless settings of some of today's devices can see in the section on data rate, transmission speed or transfer rate appear to us as MCS0 several additional options, MCS1, etc.. What does this mean? Today we will try to explain it the best.
MCS stands for Modulation and Coding Scheme, which translates as "Modulation and Coding System". The 802.11n standard defines a total of 77 MCS. Each MCS is a combination of a particular modulation (eg, BPSK, QPSK, 64-QAM), the coding rate or Coding Rate (eg, 1/2, 3/4), the guard interval or Guard Interval ( 800ns or 400ns) and the number of spatial streams or Spatial Streams. All 802.11n access points must support (at least) from MCS0 to MCS15 and 802.11n clients from MCS0 to MCS7.
Then you have a table with the combination for each index from 0 to 31 MCS.