发明名称 |
Start-up automatic frequency control (AFC) method and apparatus |
摘要 |
Method and apparatus for adjusting the frequency of a VCO at a receiver to synchronize the receiver with the transmitter by correlating a synchronization code channel with training sequences to estimate positive and negative offsets which are employed to estimate an error, which is then filtered. The filter output provides voltage controlling the VCO. The same technique may be employed to control a numeric controlled oscillator (NCO).
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申请公布号 |
US2004022333(A1) |
申请公布日期 |
2004.02.05 |
申请号 |
US20030629429 |
申请日期 |
2003.07.29 |
申请人 |
INTERDIGITAL TECHNOLOGY CORPORATION |
发明人 |
DEMIR ALPASLAN |
分类号 |
H04B1/707;H04L27/00;H04L27/06;H04L27/08;(IPC1-7):H04L27/08 |
主分类号 |
H04B1/707 |
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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