Invention Grant
US08644411B2 Generalized reference signaling scheme for multi-user multiple input, multiple output (MU-MIMO) using arbitrarily precoded reference signals
有权
广泛参考信令方案，用于多用户多输入，多输出（MU-MIMO）使用任意预编码的参考信号
- Patent Title: Generalized reference signaling scheme for multi-user multiple input, multiple output (MU-MIMO) using arbitrarily precoded reference signals
- Patent Title (中): 广泛参考信令方案，用于多用户多输入，多输出（MU-MIMO）使用任意预编码的参考信号
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Application No.: US13493805Application Date: 2012-06-11
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Publication No.: US08644411B2Publication Date: 2014-02-04
- Inventor: Jayesh H. Kotecha , Jayakrishnan C. Mundarath
- Applicant: Jayesh H. Kotecha , Jayakrishnan C. Mundarath
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Paradigm IP Law, PC
- Agent Ross L. Franks
- Main IPC: H04B7/02
- IPC: H04B7/02
Abstract:
A multi-user MIMO downlink beamforming system (200) is provided to enable transmit beamforming vectors to be efficiently provided to a subset of user equipment devices (201.i), where spatial separation or zero-forcing transmit beamformers (wi) are computed at the base station (210) and used to generate precoded reference signals (216). The precoded reference signals (216) are fed forward to the user equipment devices (201.i) which apply one or more hypothesis tests (207.i, 208.i) to the precoded reference signals to extract the precoding matrix (W), including the specific transmit beamforming vector (wUE) designed for the user equipment, and this extracted information is used to generate receive beamformers (vi).
Public/Granted literature
- US20120314654A1 MULTIPLE INPUT MULTIPLE OUTPUT (MU-MIMO) APPARATUS AND METHODS Public/Granted day:2012-12-13
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