Patent ID: 7352819

Claim:
A method comprising: estimating a multipath environment for each of a plurality of orthogonal frequency division multiplexing (OFDM) subchannels between a transmitter and a receiver; when the multipath environment includes multiple uncorrelated paths for each of the plurality of OFDM subchannels, preparing the transmitter to transmit using an OFDM multiple-input-multiple-output (MIMO) format by pre-filtering using separate channel estimation data for each of the OFDM subchannels; when the multipath environment includes multiple uncorrelated paths for less than all of the plurality of OFDM subchannels, preparing the transmitter to transmit using an OFDM-MIMO format by pre-filtering all OFDM subchannel data using channel estimation data from only one of the plurality of OFDM subchannels; when the multipath environment includes multiple correlated paths for each of the plurality of OFDM subchannels, preparing the transmitter to transmit using an OFDM spatial division multiple access (SDMA) format; and transmitting data from the transmitter.