Patent ID: 9178598
Filing Date: 2015-11-03
Classification: H04B

Abstract:
1. A wireless transmission apparatus that includes a plurality of transmission antennas, that performs precoding on a data signal for each of a plurality of reception apparatuses and that spatially multiplexes and transmits the signal after said precoding, the wireless transmission apparatus comprising: A memory having instructions stored thereon executed by a processor to perform: sharing a codebook describing a plurality of linear filters associated with each other with each of said reception apparatuses, and precoding on the data signal for each of said reception apparatuses, based on a first linear filter that is extracted from said codebook in each of said reception apparatuses based on said association and that is notified from each of said reception apparatuses; wherein said first linear filter maximizes any one of a reception signal-to-noise power ratio, a reception signal-to-interference plus noise power ratio, and a communication capacity of each of said reception apparatuses.