公开(公告)号：EP2438690A2

公开(公告)日：2012-04-11

申请号：EP09810250.2

申请日：2009-09-01

申请人： Electronics and Telecommunications Research Institute

发明人： KWON, Dong Seung ,  KWAK, Byung-Jae ,  YEH, Choongil ,  SONG, Young Seog ,  KIM, Ji Hyung ,  SHIN, Wooram ,  KANG, Chung Gu ,  KIM, Jin-Woo

IPC分类号： H04B7/06

CPC分类号： H04L1/1812 ,  H04B7/0639 ,  H04B7/0652 ,  H04L1/06

摘要： A device for generating a transmission codebook in a communication system including a multi- input multi-output (MIMO) antenna according to an embodiment of the present invention includes: a frequency determiner that determines a frequency to allow the transmission codebook to have an optimal characteristic; a precoding matrix generator that generates a precoding matrix on the basis of the frequency; and a codebook generator that generates a retransmission codebook to be used for retransmission on the basis of the precoding matrix and generates the transmission codebook on the basis of the retransmission codebook.

公开(公告)号：EP2272179A2

公开(公告)日：2011-01-12

申请号：EP09734347.9

申请日：2009-04-22

申请人： Electronics and Telecommunications Research Institute ,  Samsung Electronics Co., Ltd.

发明人： KWON, Dong Seung ,  KWAK, Byung-Jae ,  SONG, Young Seog ,  LEE, Seung Joon ,  KIM, Ji Hyung ,  YEH, Choong Il ,  SHIN, Wooram ,  KANG, Chung Gu ,  KIM, Jin-Woo

IPC分类号： H04B7/02

CPC分类号： H04L1/06 ,  H04B7/0639 ,  H04L1/1867 ,  H04L1/1893

摘要： The present invention relates to an apparatus and a method for selection of a precoding matrix. In the present invention, a precoding matrix to enable an effective signal-to-noise ratio (ESNR) to have a maximum value with respect to a signal vector that requires retransmission is selected in a codebook and fed back to a transmitter. Accordingly, since the effective signal-to-noise ratio has the maximum value after the signal vector is retransmitted, it is possible to minimize a reception error probability of retransmission.