发明授权
- 专利标题: Phase-noise resilient generation of a channel quality indicator
- 专利标题(中): 通道质量指标的相位噪声弹性产生
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申请号: US12145322申请日: 2008-06-24
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公开(公告)号: US08477888B2公开(公告)日: 2013-07-02
- 发明人: Feng Lu , Prashant Udupa Sripathi , Liang Zhao , Parvathanathan Subrahmanya , Subramanya P. Rao
- 申请人: Feng Lu , Prashant Udupa Sripathi , Liang Zhao , Parvathanathan Subrahmanya , Subramanya P. Rao
- 申请人地址: US CA San Diego
- 专利权人: QUALCOMM Incorporated
- 当前专利权人: QUALCOMM Incorporated
- 当前专利权人地址: US CA San Diego
- 代理商 Kevin Cheatham
- 主分类号: H03D1/04
- IPC分类号: H03D1/04
摘要:
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.
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