发明名称 |
Coherent track for FM IBOC receiver using a switch diversity antenna system |
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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申请公布号 |
US2005105657(A1) |
申请公布日期 |
2005.05.19 |
申请号 |
US20040874681 |
申请日期 |
2004.06.23 |
申请人 |
IBIQUITY DIGITAL CORPORATION |
发明人 |
KROEGER BRIAN W.;PEYLA PAUL J.;BAIRD JEFFREY S. |
分类号 |
H04B1/44;H04B7/08;H04L25/02;H04L27/26;H04L27/36;(IPC1-7):H04L27/36 |
主分类号 |
H04B1/44 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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