发明名称 |
METHOD AND APPARATUS FOR TRANSMITTING SIGNALS USING CODEBOOKS IN A WIRELESS COMMUNICATION SYSTEM THAT SUPPORTS MULTIPLE ANTENNAS |
摘要 |
The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transmitting signals using codebooks in a wireless communication system that supports multiple antennas. A method in which a base station transmits downlink signals according to one embodiment of the present invention comprises the following steps: receiving a first precoding matrix indicator (PMI) and a second precoding matrix indicator from a terminal; determining a first matrix (W1) from a first codebook including precoding matrices indicated by the first PMI, determining a second matrix (W2) from a second codebook including precoding matrices indicated by the second PMI, and determining a precoding matrix (W) based on the first matrix (W1) and second matrix (W2); performing precoding on one or more layers, to which the downlink signals are mapped, using the determined precoding matrix (W); and transmitting the precoded signals to the terminal. Each of the precoding matrices included in the first codebook is a block diagonal matrix, and one block has, as compared to the other block, a form multiplied by a predetermined phase value. |
申请公布号 |
WO2012002767(A2) |
申请公布日期 |
2012.01.05 |
申请号 |
WO2011KR04842 |
申请日期 |
2011.07.01 |
申请人 |
LG ELECTRONICS INC.;KO, HYUNSOO;CHUNG, JAEHOON;LEE, MOONIL |
发明人 |
KO, HYUNSOO;CHUNG, JAEHOON;LEE, MOONIL |
分类号 |
H04B7/04;H03M13/00;H04L27/26 |
主分类号 |
H04B7/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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