发明申请
US20150133069A1 FM RECEIVER WITH FREQUENCY DEVIATION-DEPENDENT ADAPTIVE CHANNEL FILTER
审中-公开
FM接收机与频偏相关的自适应信道滤波器
- 专利标题: FM RECEIVER WITH FREQUENCY DEVIATION-DEPENDENT ADAPTIVE CHANNEL FILTER
- 专利标题(中): FM接收机与频偏相关的自适应信道滤波器
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申请号: US14080551申请日: 2013-11-14
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公开(公告)号: US20150133069A1公开(公告)日: 2015-05-14
- 发明人: Eunmo Kang , Yossef Tsfaty , Le Nguyen Luong
- 申请人: QUALCOMM Incorporated
- 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
- 主分类号: H04B1/12
- IPC分类号: H04B1/12 ; H04L27/14
摘要:
Methods, systems, and devices are described for wireless communications in a frequency modulation (FM) receiver with a frequency deviation-dependent adaptive channel filter. A maximum frequency deviation of an FM broadcast signal may be estimated. One or more coefficients of a channel filter may be adapted based at least in part on the maximum frequency deviation. The coefficient adaptation may include identifying a set of coefficients corresponding to the maximum frequency deviation and applying the set of coefficients to the channel filter. The set of coefficients may be identified by selecting one of multiple sets of coefficients stored in memory. In some instances, a signal quality metric (e.g., signal-to-noise ratio (SNR)) may be identified and may be used to modify a value of one or more of the set of coefficients applied to the channel filter.
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