发明名称 |
Carrier recovering apparatus and carrier recovering method |
摘要 |
A carrier recovering apparatus, in which degradation of the demodulation performance caused when a pilot signal cannot be normally received is suppressed, includes a rotation calculator for multiplying a baseband signal and an oscillation signal and outputting a multiplied signal; a pilot signal extractor for extracting a pilot signal from the signal output from the rotation calculator; an error detection controller for outputting a phase error between the pilot signal and a reference signal as a value restricted within a given range; a loop filter for smoothing the phase error output from the error detection controller and outputting the smoothed phase error; and a variable frequency oscillator for generating a signal in accordance with the output of the loop filter and outputting the generated signal as the oscillation signal.
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申请公布号 |
US8451948(B2) |
申请公布日期 |
2013.05.28 |
申请号 |
US20070279933 |
申请日期 |
2007.12.06 |
申请人 |
HASEGAWA TERUAKI;HAYASHI YOSHIKAZU;KIMURA YOUSUKE;PANASONIC CORPORATION |
发明人 |
HASEGAWA TERUAKI;HAYASHI YOSHIKAZU;KIMURA YOUSUKE |
分类号 |
H04L1/00 |
主分类号 |
H04L1/00 |
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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