Patent ID: 7924943

Claim:
A method for communicating information, the method comprising: performing by one or more processors and/or circuits in a multiple input multiple output (MIMO) communications system: receiving signals via a plurality of spatial streams; computing a corresponding geometric mean signal to noise ratio (SNR) value for each of said plurality of spatial streams based on said received signals; selecting a corresponding plurality of modulation type identifiers and/or one or more coding rate identifiers based on said plurality of computed corresponding geometric mean signal to noise ratio values; communicating a physical layer protocol data unit (PPDU), via one or more uplink radio frequency (RF) channels, said communicated physical layer protocol data unit comprising one or more fields comprising said selected corresponding plurality of modulation type identifiers; and receiving one or more subsequent physical layer protocol data units, wherein a header portion of said received one or more subsequent physical layer protocol data units comprises a plurality of modulation type identifier values, wherein at least a portion of said plurality of modulation type identifier values is based on at least a portion of one or both of said selected corresponding plurality of modulation type identifiers and/or said selected one or more coding rate identifiers.