Efficient physical layer preamble format
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United States of America Patent
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May 8, 2012
Grant Date -
Nov 19, 2009
app pub date -
May 15, 2009
filing date -
May 15, 2008
priority date (Note) -
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Abstract
A method of generating a data unit preamble includes generating a first field associated with at least one of packet synchronization information or frame boundary indication, and generating a second field associated with channel estimation, including generating a first channel estimation sequence (CES) symbol and generating a second CES symbol, so that at least one of 1) a sequence in the first field serves as a cyclic prefix of the first CES symbol, 2) a beginning portion of the second CES symbol serves as a cyclic postfix of the first CES symbol, or 3) an ending portion of the first CES symbol serves as a cyclic prefix of the second CES symbol.
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