Invention Grant
US07920533B2 Method and apparatus for calibration and channel state feedback to support transmit beamforming in a MIMO system
有权
用于校准和信道状态反馈以支持MIMO系统中的发射波束成形的方法和装置
- Patent Title: Method and apparatus for calibration and channel state feedback to support transmit beamforming in a MIMO system
- Patent Title (中): 用于校准和信道状态反馈以支持MIMO系统中的发射波束成形的方法和装置
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Application No.: US11680694Application Date: 2007-03-01
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Publication No.: US07920533B2Publication Date: 2011-04-05
- Inventor: Chang-Soo Koo , Jin Wang , Robert Lind Olesen , Arty Chandra , Peter J. Voltz , Chia-Pang Yen
- Applicant: Chang-Soo Koo , Jin Wang , Robert Lind Olesen , Arty Chandra , Peter J. Voltz , Chia-Pang Yen
- Applicant Address: US DE Wilmington
- Assignee: InterDigital Technology Corporation
- Current Assignee: InterDigital Technology Corporation
- Current Assignee Address: US DE Wilmington
- Agency: Volpe and Koenig, PC
- Main IPC: H04W4/00
- IPC: H04W4/00 ; H04B7/00 ; H04B17/00 ; H04B1/00
Abstract:
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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