Cognitive radio communication system using multiple input multiple output communication scheme
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United States of America Patent
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Mar 17, 2015
Grant Date -
Dec 10, 2009
app pub date -
Mar 9, 2009
filing date -
Jun 10, 2008
priority date (Note) -
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Abstract
A cognitive radio communication system using a multiple input multiple output (MIMO) communication technology is provided. A cognitive radio base station includes a plurality of antennas, a group setting unit to set at least one sensing terminal group that includes at least one sensing terminal among a plurality of terminals, and a signal generator to generate a transmission signal to transmit the transmission signal using channels formed between the plurality antennas and the plurality of terminals, so that the at least one sensing terminal is accorded a sensing time.
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