发明名称 |
Apparatus, methods and articles of manufacture for signal correction using adaptive phase re-alignment |
摘要 |
The invention is directed to a system for adaptively re-aligning a modulated output signal having an error component by generating a reference phase signal using a phase input signal; generating a sample phase signal from the output signal; comparing the reference and sample signals; and adaptively re-aligning any difference between the reference and sample signals to substantially reduce the error component. The invention may incorporate a sampling circuit for sampling the output signal to generate the sample signal; a digital phase locked loop for combining the phase input signal with a carrier wave to generate the reference signal and comparing them to generate a phase error signal; a reference filter for generating reference phase error information; a combining circuit for combining the phase error signal with the reference phase error information to generate a correction signal; and an adaptive gain control circuit for adaptively controlling gain in the correction signal to generate a final estimated error used to re-align the output signal with the phase input signal.
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申请公布号 |
US7551685(B2) |
申请公布日期 |
2009.06.23 |
申请号 |
US20030647878 |
申请日期 |
2003.08.25 |
申请人 |
M/A-COM, INC. |
发明人 |
YANG YONGWEN;MOY CAROL;DIVINCENZO CHRISTINE |
分类号 |
H04L25/03;H04L27/00;H04L27/20;H04L27/26 |
主分类号 |
H04L25/03 |
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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