Data stream interleaving with different rotations applied to changed bit streams for spatially diverse transmission

A wireless communication system comprising:

• a transmitter comprising a parser, an interleaver section coupled with the parser, a subcarrier mapping section coupled with the interleaver section, a transmit back end coupled with the subcarrier mapping section, and transmitter antennas coupled with the transmit back end, wherein the transmitter is configured to (i) split a first bit stream into two or more second bit streams during a multiple-in-multiple-out (MIMO) mode of transmission, (ii) perform separate interleaving of the two or more second bit streams during the MIMO mode of transmission with a first of the two or more second bit streams being handled using a same interleaver operation as used during a single-in-single-out (SISO) mode of transmission, (iii) perform separate mapping of subcarriers in the two or more second bit streams during the MIMO mode of transmission, and (iv) apply different rotations to dynamically changed second, third, and fourth ones of the two or more second bit streams transmitted over the transmitter antennas during the MIMO mode of transmission to improve transmission robustness and transmission data rate;
• and
• a receiver comprising receiver antennas, a receive front coupled with the receiver antennas, a subcarrier de-mapping section coupled with the receive front end, a de-interleaver section coupled with the subcarrier de-mapping section, and a receive back end coupled with the interleaver section, wherein the receiver is configured to (i) receive a single bit stream during the SISO mode of transmission, (ii) receive the two or more second bit streams during the MIMO mode of transmission, (iii) perform separate de-mapping of subcarriers in the two or more second bit streams during the MIMO mode of transmission, (iv) perform separate de-interleaving of the two or more second bit streams during the MIMO mode of transmission with a first of the two or more second bit streams being handled using a same de-interleaver operation as used during the SISO mode of transmission, and (v) combine the two or more second bit streams during the MIMO mode of transmission.