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公开(公告)号：WO2005034394A1
公开(公告)日：2005-04-14
申请号：PCT/US2004/028612
申请日：2004-09-02
Applicant: INTERDIGITAL TECHNOLOGY CORPORATION , BULTAN, Aykut , HAIM, John W. , GRIECO, Donald, M.
Inventor： BULTAN, Aykut , HAIM, John W. , GRIECO, Donald, M.
IPC: H04B15/00
CPC classification number: H04B1/7117 , H04B1/7073 , H04B1/70754 , H04B1/708 , H04B1/7095 , H04B2201/70701
Abstract: A method for frame synchronization of a receiver in a wireless communication system wherein data is transmitted in frame units in a multipath environment begins by extracting data samples for a predetermined window size. A training sequence corresponding to a given cell parameter is generated. The data is correlated with the training sequence over different lags to locate the position of the first significant path, which defines the beginning of the frame. The correlated data is accumulated N times for each lag position to produce at least one accumulation vector. A most significant path value and position is determined that is the largest value among the accumulation vectors. A frame synchronization correction value is calculated based on the difference between the first significant path position and a constant called frame offset. The frame synchronization is adjusted based upon the frame synchronization correction value.
Abstract translation: 一种在无线通信系统中的接收机的帧同步方法，其中以多个路径环境中的帧为单位发送数据，通过提取预定窗口大小的数据样本开始。 生成对应于给定单元参数的训练序列。 数据与不同延迟的训练序列相关，以定位第一个有效路径的位置，该位置定义了帧的开始。 相关数据对于每个滞后位置累积N次以产生至少一个累积向量。 确定最大的路径值和位置，其是累积向量中的最大值。 基于第一有效路径位置和称为帧偏移的常数之间的差来计算帧同步校正值。 基于帧同步校正值来调整帧同步。
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公开(公告)号：WO2004066543A2
公开(公告)日：2004-08-05
申请号：PCT/US2004/001963
申请日：2004-01-23
Applicant: INTERDIGITAL TECHNOLOGY CORPORATION , DEMIR, Alpaslan , GRIECO, Donald, M. , HAIM, John W. , BEDNARZ, Andrew, F.
Inventor： DEMIR, Alpaslan , GRIECO, Donald, M. , HAIM, John W. , BEDNARZ, Andrew, F.
IPC: H04L
Abstract: A method and system for performing initial cell search in wireless communication system wherein unsuitable cells are excluded is disclosed. Stored frequencies are searched exhaustively and initial frequencies are search non-exhaustively. Initial frequencies may be searched exhaustively in certain circumstances. When performing exhaustive initial cell searches, primary synchronization codes that lead to unsuitable cells are excluded from subsequent initial cell searches performed on the same frequency.
Abstract translation: 公开了一种用于在无线通信系统中执行初始小区搜索的方法和系统，其中不适合的小区被排除。 存储的频率被彻底搜索，并且初始频率被非穷举地搜索。 在某些情况下可以彻底地搜索初始频率。 当执行穷举的初始小区搜索时，导致不合适小区的主同步码被从在相同频率上执行的后续初始小区搜索中排除。
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公开(公告)号：EP1668805A1
公开(公告)日：2006-06-14
申请号：EP04782998.1
申请日：2004-09-02
Applicant: INTERDIGITAL TECHNOLOGY CORPORATION
Inventor： BULTAN, Aykut , HAIM, John W. , GRIECO, Donald, M.
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公开(公告)号：EP1590974A2
公开(公告)日：2005-11-02
申请号：EP04704959.8
申请日：2004-01-23
Applicant: INTERDIGITAL TECHNOLOGY CORPORATION
Inventor： DEMIR, Alpaslan , GRIECO, Donald, M. , HAIM, John W. , BEDNARZ, Andrew, F.
IPC: H04Q7/20
Abstract: A method and system for performing initial cell search in wireless communication system wherein unsuitable cells are excluded is disclosed. Stored frequencies are searched exhaustively and initial frequencies are search non-exhaustively. Initial frequencies may be searched exhaustively in certain circumstances. When performing exhaustive initial cell searches, primary synchronization codes that lead to unsuitable cells are excluded from subsequent initial cell searches performed on the same frequency.
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