发明名称 |
Apparatus and method for synchronization in a multiple-carrier communication system by observing energy within a guard band |
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 guard band synchronization detector provides a synchronization indicator based on the energy detected within a guard band where a pilot tone is transmitted adjacent to the guard band. A timing error results in energy leakage into one or more guard bands. In one embodiment, a plurality of synchronization indicators are observed to determine whether a loss of synchronization between a transmitter and a receiver in the wireless system has occurred.
|
申请公布号 |
US6389087(B1) |
申请公布日期 |
2002.05.14 |
申请号 |
US20000593449 |
申请日期 |
2000.06.14 |
申请人 |
AT&T WIRELESS SERVICES, INC. |
发明人 |
HEINONEN JARI M.;HIRANO MICHAEL R. |
分类号 |
H04L27/26;(IPC1-7):H04L7/00;H04J3/06 |
主分类号 |
H04L27/26 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|