Use 3 numbers:4x4 : 4SSĀ spatial stream
4 Antena to Rx and
4 antena to Tx
1 stream is split to 4 stream of data
3+1 ( last is for redundancy of data streams )
...
4 Antena to Rx and
4 antena to Tx
1 stream is split to 4 stream of data
3+1 ( last is for redundancy of data streams )
...