Table 3 lists each standard along with which modulation and coding schemes
it can use. Note that not all the schemes are mandatory for each standard. Some
of them may be required for interoperability while others are entirely optional
depending on which revision of the standard is used. The full name of each of
the techniques is listed below the table.
Note that 802.11n is currently only a draft standard and not a fully fledged
standard so certain details may change when it is published.
All the different techniques listed in Table 3 has been categorized into the
more generic types in Table 4 in order to get a better overview. From Table 4
we can see that all the wireless standards use some kind of PSK scheme, except
the new 802.11n which uses QAM and Alamouti STBC.