发明名称 |
Method and apparatus for timing recovery in ADSL transceivers under a TCM-ISDN crosstalk environment |
摘要 |
A system used to synchronize the clock frequency of a receiver with that of a transmitter, where both the receiver and transmitter communicate using the ADSL Annex C standard. The transmitter continuously transmits pilot tones to the receiver. The receiver determines the phase error between sequential pilot tone symbols to determine a phase error. The receiver uses the phase error to adjust the receiver clock frequency. However, if the most recently received symbol is subject to near end cross talk or is subject to far end cross talk and is a boundary symbol, the receiver ignores the phase error and does not adjust the receiver clock frequency.
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申请公布号 |
US6724849(B1) |
申请公布日期 |
2004.04.20 |
申请号 |
US20000515415 |
申请日期 |
2000.02.29 |
申请人 |
CENTILLIUM COMMUNICATIONS, INC. |
发明人 |
LONG GUOZHU;HUNG CHIN N;BAR-NESS YARON |
分类号 |
H04J11/00;H04B1/76;H04B3/10;H04L5/14;H04L7/033;H04L7/10;H04L27/26;(IPC1-7):H04L25/00 |
主分类号 |
H04J11/00 |
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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