Invention Grant
- Patent Title: Phase-noise resilient generation of a channel quality indicator
- Patent Title (中): 通道质量指标的相位噪声弹性产生
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Application No.: US12145322Application Date: 2008-06-24
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Publication No.: US08477888B2Publication Date: 2013-07-02
- Inventor: Feng Lu , Prashant Udupa Sripathi , Liang Zhao , Parvathanathan Subrahmanya , Subramanya P. Rao
- Applicant: Feng Lu , Prashant Udupa Sripathi , Liang Zhao , Parvathanathan Subrahmanya , Subramanya P. Rao
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agent Kevin Cheatham
- Main IPC: H03D1/04
- IPC: H03D1/04

Abstract:
System(s) and method(s) are provided for generating phase-noise resilient channel quality indicator(s). A pilot signal utilized to determine a channel quality indicator is rotated to be aligned to a phase reference signal. Separate noise evaluations in quadrature and in-phase directions are utilized, at least in part, to generate a net noise estimate that is phase-noise compensated or resilient. For example, various combination schemes of quadrature and in-phase noise evaluations can be exploited to generate a net noise estimate, the schemes include weighted average of in-phase and quadrature noise estimates and running averages thereof. Simulation of net noise estimates as a function of geometry conditions reveal that the combination schemes provide substantive mitigation of phase-noise, thus making CQI generation phase-noise resilient.
Public/Granted literature
- US20090316842A1 PHASE-NOISE RESILIENT GENERATION OF A CHANNEL QUALITY INDICATOR Public/Granted day:2009-12-24
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