Method and apparatus for transmitting signals
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United States of America Patent
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Aug 26, 2014
Grant Date -
Jan 24, 2013
app pub date -
Aug 3, 2012
filing date -
Jun 28, 2004
priority date (Note) -
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Abstract
A storage unit stores a preamble signal defined in a legacy system and a preamble signal defined in a MIMO system. A monitoring unit in a transmitting apparatus monitors the existence of any communication apparatus which is not compatible with the MIMO system but accepts the legacy system. A channel characteristics acquiring unit derives the characteristics of a radio channel between the transmitting apparatus and a receiving apparatus. A selector selects a packet format based on a monitoring result obtained by the monitoring unit. The selector also selects where to place LTS, based on the characteristics of wireless channel derived by the channel characteristics acquiring unit.
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