发明申请
US20110211474A1 METHOD AND APPARATUS FOR CALIBRATION AND CHANNEL STATE FEEDBACK TO SUPPORT TRANSMIT BEAMFORMING IN A MIMO SYSTEM
审中-公开
用于在MIMO系统中支持发射波束的校准和信道状态反馈的方法和装置
- 专利标题： METHOD AND APPARATUS FOR CALIBRATION AND CHANNEL STATE FEEDBACK TO SUPPORT TRANSMIT BEAMFORMING IN A MIMO SYSTEM
- 专利标题（中）： 用于在MIMO系统中支持发射波束的校准和信道状态反馈的方法和装置
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申请号： US13071600申请日： 2011-03-25
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公开(公告)号： US20110211474A1公开(公告)日： 2011-09-01
- 发明人: Chang-Soo Koo , Arty Chandra , Peter J. Voltz , Chia-Pang Yen , Jin Wang , Robert Lind Olesen
- 申请人： Chang-Soo Koo , Arty Chandra , Peter J. Voltz , Chia-Pang Yen , Jin Wang , Robert Lind Olesen
- 申请人地址： US DE Wilmington
- 专利权人： INTERDIGITAL TECHNOLOGY CORPORATION
- 当前专利权人： INTERDIGITAL TECHNOLOGY CORPORATION
- 当前专利权人地址： US DE Wilmington
- 主分类号： H04L12/26
- IPC分类号： H04L12/26
摘要：
A method and apparatus for calibration and channel state feedback to support transmit beamforming in a multiple-input multiple-output (MIMO) system are disclosed. For radio frequency (RF) calibration, a first station (STA) sends a calibration request to a second STA, and the second STA sends a sounding packet to the first STA. The first STA receives the sounding packet, performs at least one channel measurement and performs calibration based on the channel measurement. For channel state feedback, the first STA sends a channel state feedback request to the second STA. The second STA sends a sounding packet to the first STA. The first STA receives the sounding packet and performs at least one channel measurement with the sounding packet. The first STA then calculates a steering matrix for transmit beamforming based on the channel measurement.
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