发明授权
US08948289B2 Method and device for codebook generation and downlink signal transmission in a wireless communication system supporting multiple antennas
有权
用于支持多个天线的无线通信系统中的码本生成和下行链路信号传输的方法和装置
- 专利标题： Method and device for codebook generation and downlink signal transmission in a wireless communication system supporting multiple antennas
- 专利标题（中）： 用于支持多个天线的无线通信系统中的码本生成和下行链路信号传输的方法和装置
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申请号： US13521211申请日： 2011-01-12
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公开(公告)号： US08948289B2公开(公告)日： 2015-02-03
- 发明人: Hyun Soo Ko , Moon Il Lee , Jae Hoon Chung , Bin Chul Ihm , Seung Hyun Kang
- 申请人： Hyun Soo Ko , Moon Il Lee , Jae Hoon Chung , Bin Chul Ihm , Seung Hyun Kang
- 申请人地址： KR Seoul
- 专利权人： LG Electronics Inc.
- 当前专利权人： LG Electronics Inc.
- 当前专利权人地址： KR Seoul
- 代理机构： McKenna Long & Aldridge LLP
- 优先权： KR10-2011-0003046 20110112
- 国际申请： PCT/KR2011/000219 WO 20110112
- 国际公布： WO2011/087275 WO 20110721
- 主分类号： H04B7/02
- IPC分类号： H04B7/02 ; H04L1/02 ; H04B7/04 ; H04B7/06
摘要：
The present invention relates to a method in which a base station transmits a downlink signal using 8 antennas may comprise the steps of: mapping a downlink signal to N (1≦N≦4) layers; precoding the signal mapped to the N layers, by using a specific precoding matrix selected from a pre-stored codebook; subjecting the precoded signal to processing for OFDM symbol generation; and transmitting OFDM symbols through 8 antennas. The pre-stored codebook may comprise precoding matrices for the respective ranks corresponding to N, the pre-stored codebook may consist of 16 codebook indexes, and a portion of the precoding matrices for high ranks in the 16 codebook indexes may be generated from the precoding matrices for low ranks.
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