发明名称 |
Method and apparatus for extended range frequency correction burst detection |
摘要 |
A radio communication device provides extended burst tone detection for a demodulated I and Q input signal. The device includes a first burst detector coupled with the input signal and provides a first detection signal when a FCB tone is detected. A frequency shifter is coupled with the input signal and frequency translates the input signal by a predetermined amount. A second burst detector is coupled with the translated input signal and provides a second detection signal when a FCB tone is detected. A combiner is coupled with the first and second detection signals and indicates FCB tone detection when either of the first and second detection signals indicate FCB tone detection.
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申请公布号 |
US6480555(B1) |
申请公布日期 |
2002.11.12 |
申请号 |
US19990388666 |
申请日期 |
1999.09.02 |
申请人 |
MOTOROLA, INC. |
发明人 |
RENARD KENNETH A.;NADATHUR PRIYA S.;BAKER JAMES C.;HIETALA ALEXANDER W. |
分类号 |
H04L7/04;H04L27/14;(IPC1-7):H03D1/00;H04J3/06;H04L7/00 |
主分类号 |
H04L7/04 |
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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