Multiple-input multiple output system and method
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United States of America Patent
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Nov 10, 2009
Grant Date -
Jul 14, 2005
app pub date -
Nov 3, 2004
filing date -
Nov 4, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
A multiple-input multiple-output (MIMO) system can transmit on multiple antennas simultaneously and receive on multiple antennas simultaneously. Unfortunately, because a legacy 802.11a/g device is not able to decode multiple data streams, such a legacy device may “stomp” on a MIMO packet by transmitting before the transmission of the MIMO packet is complete. Therefore, MIMO systems and methods are provided herein to allow legacy devices to decode the length of a MIMO packet and to restrain from transmitting during that period. These MIMO systems and methods are optimized for efficient transmission of MIMO packets.
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