Invention Grant
US08559571B2 Method and apparatus for beamforming of multi-input-multi-output (MIMO) orthogonal frequency division multiplexing (OFDM) transceivers
有权
用于多输入多输出（MIMO）正交频分复用（OFDM）收发器的波束成形的方法和装置
- Patent Title: Method and apparatus for beamforming of multi-input-multi-output (MIMO) orthogonal frequency division multiplexing (OFDM) transceivers
- Patent Title (中): 用于多输入多输出（MIMO）正交频分复用（OFDM）收发器的波束成形的方法和装置
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Application No.: US11840891Application Date: 2007-08-17
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Publication No.: US08559571B2Publication Date: 2013-10-15
- Inventor: Chien-Cheng Tung , Thomas Edward Pare, Jr.
- Applicant: Chien-Cheng Tung , Thomas Edward Pare, Jr.
- Applicant Address: TW
- Assignee: Ralink Technology Corporation
- Current Assignee: Ralink Technology Corporation
- Current Assignee Address: TW
- Main IPC: H03D1/04
- IPC: H03D1/04
Abstract:
An embodiment of the present invention includes a calibration system employed in a multi-input-multi-output (MIMO) system for beamforming and receiving a plurality of streams. The system includes a first calibration circuit responsive to inphase (I) and quadrature (Q) pairs of stream and operative to calibrate each I and Q pair and a second calibration circuit responsive to the calibrated I and Q pairs for all streams, wherein the first and second calibration circuits perform calibration in the time domain.
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