发明名称 |
Apparatus and method for synchronization in a multiple-carrier communications system by observing a phase-frequency relationship of a plurality of pilot signals |
摘要 |
A method, apparatus and system detects a loss of synchronization between a transmitter and a receiver in a multiple-carrier communication system such as an OFDM system. A phase-frequency synchronization detector determines when the receiver has lost synchronization with the transmitter based on a phase-frequency relationship of plurality of pilot signals transmitted at different frequencies from the transmitter and received at the receiver. A loss of synchronization is detected when a slope of a line defined by the phase-frequency relationship exceeds a timing threshold more at a rate in excess of an occurrence threshold within a time period.
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申请公布号 |
US6940933(B1) |
申请公布日期 |
2005.09.06 |
申请号 |
US20000593547 |
申请日期 |
2000.06.14 |
申请人 |
CINGULAR WIRELESS II, LLC |
发明人 |
HEINONEN JARI M.;HIRANO MICHAEL R. |
分类号 |
H04L7/00;H04L27/26;(IPC1-7):H04L7/00 |
主分类号 |
H04L7/00 |
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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