Method and system of interleaving for a multiple-input multiple-output multi-band OFDM communication system
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United States of America Patent
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Apr 30, 2013
Grant Date -
Apr 22, 2010
app pub date -
Mar 12, 2008
filing date -
Mar 13, 2007
priority date (Note) -
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Abstract
A multiple-input multiple-output multi-band OFDM transmission system (400) employs a data interleaving arrangement that is backwards compatible with specifications for a legacy interleaver. In one embodiment, an input data stream is parsed into two or more separate data streams by a round robin parser (310) and each of the separate data streams is shifted by a corresponding number of symbols and then interleaved by a legacy interleaver (340i). In another embodiment, data for a plurality (N*i) of symbols is split into N sequential groups of data, each group corresponding to one of N MIMO spatial streams, each stream including data for i symbols. Each group is then interleaved by a legacy interleaver (520i). In a third embodiment, an input data stream is interleaved by a scaled version of the legacy interleaver (610), and then parsed by a round-robin parser (620).
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