Patent ID: 8731090

Claim:
A method for transmitting channel feedback data from a receiver to a transmitter, the method comprising: determining channel data for a plurality of orthogonal frequency division multiplexing (OFDM) tones of one or more spatial or space-time streams corresponding to a communication channel; determining a compressed form of the channel data including determining a plurality of angle values associated with i) the one or more spatial or space-time streams and ii) one or more OFDM tones of the plurality of OFDM tones; for each of the one or more spatial or space-time streams: i) determining an average signal to noise ratio (avg-SNR) by averaging signal to noise ratio (SNR) values corresponding to one or more OFDM tones of the plurality of OFDM tones, and ii) determining a per-tone signal to noise ratio (PT-SNR) associated with one or more OFDM tones of the plurality of OFDM tones, generating a feedback report to include at least i) the plurality of angle values associated with the one or more spatial or space-time streams and the one or more OFDM tones, ii) deltas corresponding to the PT-SNRs associated with the one or more spatial or space-time streams and the at least some of the one or more OFDM tones, wherein each delta corresponds to a difference between the respective PT-SNR and the avg-SNR associated with the one or more spatial or space-time streams, and iii) the avg-SNR associated with the one or more spatial or space-time streams; and including the feedback report in a data unit to be transmitted from the receiver to the transmitter.