| 摘要 |
Channel sounding information is received by a first communication device during an antenna selection training procedure. Antenna selection computations are performed, and the computations (i) assume that a second communication device uses a first Nss columns of a full-dimensional spatial spreading matrix to transmit the channel sounding information during the antenna selection training procedure, and (ii) accounts for the use, by the second communication device, of the first Nss columns of the full-dimensional spatial spreading matrix when transmitting Nss spatial streams. The full dimensional channel spatial spreading matrix has components i) a number of rows equal to a number, NT, of transmission chains to be used by the second communication device to transmit spatial data streams, and ii) a column dimension having a number of columns equal to NT, and Nss is less than both NT and NR, the number of receiving chains of the first communication device.
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