Data stream interleaving with different rotations applied to changed bit streams for spatially diverse transmission
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United States of America Patent
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Jan 30, 2018
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app pub date -
Dec 14, 2015
filing date -
Dec 17, 2004
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Abstract
Systems and techniques relating to processing multiple data streams include, according to at least one implementation, receiving a single bit stream during a SISO mode of transmission; receiving two or more bit streams during a MIMO mode of transmission, wherein different rotations are applied to dynamically changed second, third, and fourth ones of the two or more bit streams received during the MIMO mode of transmission to improve transmission robustness and transmission data rate; performing separate de-mapping of subcarriers in the two or more bit streams during the MIMO mode of transmission; performing separate de-interleaving of the two or more bit streams during the MIMO mode of transmission, wherein a first portion of a de-interleaver section that handles a first of the two or more bit streams employs a same de-interleaver operation as during the SISO mode of transmission; and combining the two or more bit streams.
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