| 摘要 |
A plurality of training fields of a preamble of a multi-user physical layer data unit are generated, and training fields of the plurality of training fields are mapped to respective signal streams of a plurality of streams using a mapping matrix, where different portions of each column of the mapping matrix correspond to different client devices. A first signal field of the preamble of the data unit corresponding to a first client device is generated, and the first signal field is mapped to a first set of signal streams using a first portion of a column of the mapping matrix. A second signal field of the preamble of the data unit corresponding to the second client device is generated, and the second signal field is mapped to a second set of signal streams using a second portion of the column of the mapping matrix. |
