WAP transmission begins in the baseband stage 500A where outgoing communications for associated users/stations singly or in multi-user groups are subject to baseband transmit processing. The baseband components are configurable to conform with the number of communication data streams to be transmitted, which in the example shown is from one-to-four. The WAP is capable of transmitting up to four separate streams of data concurrently. The data is packetized in up to four packet assemblers 502A-D; encoded for error correction, scrambled, interleaved, and mapped to the appropriate constellation points in up to four encoder mappers 504A-D, and sent to the spatial mapper 506 for spatial mapping using a precode matrix. In the example shown two streams of discrete data are subject to baseband processing. Stream “a” destined for station 302A and stream “b” destined for station 3026. The spatially mapped streams “ab” are output by the spatial mapper onto the OFDM tone/sub-channel bins 508A-D at the input of each of the four inverse discrete Fourier transform (IDFT) components 510A-D which transform the outgoing communications from the frequency to the time domain. There is a discrete precoding matrix for each of the OFDM tones or sub-channels. The outgoing communication data is then passed to the RF stage 500B for upconversion to the appropriate communication channel and transmission by the four antenna array 512. The spatial mapping using a precode matrix derived from a prior isotropic explicit sounding of the stations, has the effect of spatially separating the distinct “ab” streams transmitted by the WAP so that upon arrival at stations 302A and 302B the “a” stream portion of the “ab” transmission arrives at station 302A without crosstalk/interference from the “b” stream, and conversely the “b” stream portion of the “ab” transmission arrives at station 302B without crosstalk/interference from the “a” stream. This spatial separation is graphically represented by the multi lobed RF signal strength pattern 512A-B output by the MIMO antenna array 512. The complex signal processing responsible for this result quickly looses its effectiveness as slight and normally occurring changes in the multi-path communication channel between the WAP and each station take place. The hybrid spatial mapping capability of the WAP and stations allows post sounding adjustments to the precode matrix which reduce the severity of this problem, by using crosstalk feedback during downlink transmissions to incrementally adjust the precode matrix used for spatial mapping.