Method for transmitting a downlink signal in a base station cooperative wireless communication system and an apparatus for same
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United States of America Patent
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Aug 2, 2016
Grant Date -
Sep 11, 2014
app pub date -
Jul 9, 2012
filing date -
Oct 16, 2011
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Abstract
The present invention relates to a method for determining a precoding matrix for downlink signal transmission in a base station cooperative wireless communication system. The method includes receiving from a first terminal first channel information between the first base station and the first terminal, and second channel information between a second base station and the first terminal, transferring the first and the second channel informations to the second base station, determining a first precoding matrix for a first channel maximizing the efficiency of transmission to the first terminal, and determining, by the second base station, a second precoding matrix for a third channel between the second base station and the first terminal in order for a signal transmitted from the second base station to the first terminal to be arranged in an area where a signal transmitted from the first base station to the first terminal is not used.
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