发明授权
US07724850B2 Coherent track for FM IBOC receiver using a switch diversity antenna system
有权
使用开关分集天线系统的FM IBOC接收机的相干轨道
- 专利标题： Coherent track for FM IBOC receiver using a switch diversity antenna system
- 专利标题（中）： 使用开关分集天线系统的FM IBOC接收机的相干轨道
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申请号： US10874681申请日： 2004-06-23
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公开(公告)号： US07724850B2公开(公告)日： 2010-05-25
- 发明人: Brian W. Kroeger , Paul J. Peyla , Jeffrey S. Baird
- 申请人： Brian W. Kroeger , Paul J. Peyla , Jeffrey S. Baird
- 申请人地址： US MD Columbia
- 专利权人： iBiquity Digital Corporation
- 当前专利权人： iBiquity Digital Corporation
- 当前专利权人地址： US MD Columbia
- 代理机构： Pietragallo Gordon Alfano Bosick & Raspanti, LLP
- 代理商 Robert P. Lenart, Esq.
- 主分类号： H04B7/10
- IPC分类号： H04B7/10
摘要：
A method is provided for coherently tracking a radio signal including a plurality of digitally modulated reference subcarriers. The method comprises the steps of receiving symbols transmitted on the reference subcarriers, combining the reference subcarrier symbols with a known reference sequence conjugate to produce a plurality of samples, median filtering the samples to produce filtered samples, and smoothing the samples for each of the reference subcarriers over the plurality of reference subcarriers to produce a coherent reference signal estimate for each of the subcarriers. A receiver for coherently tracking a radio signal including at least one digitally modulated reference carrier is also provided.
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