Mimo ofdm transmitter for spatial interleaving a plurality of spatial streams and corresponding method therefor

摘要

A multicarrier transmitter performs bit-interleaving suitable for transmitting more than one spatial stream over a multicarrier communication channel. The multicarrier transmitter includes at least a bit-grouping shifter to shift QAM symbol-bit groupings of a spatial stream in the subcarrier-axis by a number of subcarriers based on spatial stream index, and a bit-position permuter to rotate bit groups in the bit position-axis, but within I and Q subgroupings of the QAM symbol-bit groupings based on the spatial stream index.