Invention Grant
US08238917B2 Method and system for utilizing tone grouping with Givens rotations to reduce overhead associated with explicit feedback information
失效
利用Givens旋转进行音调分组以减少与显式反馈信息相关的开销的方法和系统
- Patent Title: Method and system for utilizing tone grouping with Givens rotations to reduce overhead associated with explicit feedback information
- Patent Title (中): 利用Givens旋转进行音调分组以减少与显式反馈信息相关的开销的方法和系统
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Application No.: US13008118Application Date: 2011-01-18
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Publication No.: US08238917B2Publication Date: 2012-08-07
- Inventor: Joonsuk Kim
- Applicant: Joonsuk Kim
- Applicant Address: US CA Irvine
- Assignee: Broadcom Corporation
- Current Assignee: Broadcom Corporation
- Current Assignee Address: US CA Irvine
- Agency: Garlick & Markison
- Agent Holly L. Rudnick
- Main IPC: H04W36/00
- IPC: H04W36/00 ; H04W40/00

Abstract:
Aspects of a method and system for utilizing tone grouping with Givens rotations to reduce overhead associated with explicit feedback information are presented. In one aspect of the invention, Givens matrices may be utilized to reduce a quantity of information communicated in explicit feedback information via an uplink RF channel. The explicit feedback information may include specifications for a feedback beamforming matrix that may be utilized when transmitting signals via a corresponding downlink RF channel. The feedback beamforming matrix may represent a rotated version of an un-rotated matrix. The Givens matrices may be utilized to apply one or more Givens rotations to un-rotated matrix. The rotated matrix may reduce the quantity of information communicated in the explicit feedback information. The quantity of information communicated in the explicit feedback information may be further reduced by utilizing tone grouping.
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