公开(公告)号：US08867443B2

公开(公告)日：2014-10-21

申请号：US13258448

申请日：2010-11-17

申请人： Ning Qiu ,  Qiang Li ,  Wenqi Zeng ,  Tiankun Yu ,  Zhongwei Liu ,  Yannan Xing ,  Lihong Liang ,  Liwen Li ,  Feng Lin ,  Jintao Chu

发明人： Ning Qiu ,  Qiang Li ,  Wenqi Zeng ,  Tiankun Yu ,  Zhongwei Liu ,  Yannan Xing ,  Lihong Liang ,  Liwen Li ,  Feng Lin ,  Jintao Chu

IPC分类号： H04W56/00 ,  H04B1/7087

CPC分类号： H04B1/7087

摘要： The invention provides a method and an apparatus for estimating frequency deviation, the method comprising: after receiving a sub-frame, transforming a downlink synchronized code of the sub-frame to a frequency domain, and performing a correlation operation between the transformed downlink synchronized code and a local frequency domain synchronized code to obtain a conjugate downlink synchronized code sequence; judging a location of a maximum value in the conjugate downlink synchronized code sequence, and calculating a frequency deviation value according to the location of the maximum value. The estimating method provided in the invention can realize a stable work with no need of a precise sampling value location, an accurate timing synchronization, or even obtaining the information for the multi-path distribution and locations.

摘要翻译： 本发明提供了一种用于估计频偏的方法和装置，该方法包括：在接收到子帧之后，将子帧的下行同步码变换为频域，并且在经变换的下行同步码 和本地频域同步码，以获得共轭下行同步码序列; 判断所述共轭下行同步码序列中的最大值的位置，并根据所述最大值的位置来计算频率偏差值。 本发明提供的估计方法可以实现稳定的工作，不需要精确的采样值位置，精确的定时同步，甚至获得多径分布和位置的信息。

公开(公告)号：US08867522B2

公开(公告)日：2014-10-21

申请号：US13522826

申请日：2010-12-02

申请人： Ning Qiu ,  Qiang Li ,  Wenqi Zeng ,  Tiankun Yu ,  Zhongwei Liu ,  Yannan Xing ,  Lihong Liang ,  Liwen Li ,  Feng Lin ,  Jintao Chu

发明人： Ning Qiu ,  Qiang Li ,  Wenqi Zeng ,  Tiankun Yu ,  Zhongwei Liu ,  Yannan Xing ,  Lihong Liang ,  Liwen Li ,  Feng Lin ,  Jintao Chu

IPC分类号： H04J3/06 ,  H04W56/00 ,  H04L7/04 ,  H04B1/7073 ,  H04B1/7075

CPC分类号： H04L7/041 ,  H04B1/70735 ,  H04B1/7075 ,  H04J3/0605 ,  H04L7/042 ,  H04W56/00

摘要： The present invention discloses a multi-frame synchronization method, the method comprises: for each received sub-frame, a receiver determining a probability that the received sub-frame is each of sub-frames in a multi-frame, a sub-frame with maximum probability being a state of the currently received sub-frame after N sub-frames are received. The present invention further discloses a receiving apparatus for multi-frame synchronization comprising a calculation module; wherein the calculation module is configured to calculate a probability that a received sub-frame is each of sub-frames in a multi-frame, and determine a state of the currently received sub-frame based on a sub-frame with maximum probability after N sub-frames are received. The present invention effectively achieves a position for multi-frame synchronization and low calculation complexity.

摘要翻译： 本发明公开了一种多帧同步方法，该方法包括：对于每个接收到的子帧，接收机确定接收到的子帧是多帧中的每个子帧的概率，具有 最大概率是接收到N个子帧之后的当前接收到的子帧的状态。 本发明还公开了一种用于多帧同步的接收装置，包括一个计算模块; 其中所述计算模块被配置为计算接收到的子帧是多帧中的每个子帧的概率，并且基于在N之后具有最大概率的子帧来确定当前接收到的子帧的状态 子帧被接收。 本发明有效地实现了多帧同步的位置和低的计算复杂度。

公开(公告)号：US20130058362A1

公开(公告)日：2013-03-07

申请号：US13522826

申请日：2010-12-02

申请人： Ning Qiu ,  Qiang Li ,  Wenqi Zeng ,  Tiankun Yu ,  Zhongwei Liu ,  Yannan Xing ,  Lihong Liang ,  Liwen Li ,  Feng Lin ,  Jintao Chu

发明人： Ning Qiu ,  Qiang Li ,  Wenqi Zeng ,  Tiankun Yu ,  Zhongwei Liu ,  Yannan Xing ,  Lihong Liang ,  Liwen Li ,  Feng Lin ,  Jintao Chu

IPC分类号： H04J3/06

CPC分类号： H04L7/041 ,  H04B1/70735 ,  H04B1/7075 ,  H04J3/0605 ,  H04L7/042 ,  H04W56/00

摘要： The present invention discloses a multi-frame synchronization method, the method comprises: for each received sub-frame, a receiver determining a probability that the received sub-frame is each of sub-frames in a multi-frame, a sub-frame with maximum probability being a state of the currently received sub-frame after N sub-frames are received. The present invention further discloses a receiving apparatus for multi-frame synchronization comprising a calculation module; wherein the calculation module is configured to calculate a probability that a received sub-frame is each of sub-frames in a multi-frame, and determine a state of the currently received sub-frame based on a sub-frame with maximum probability after N sub-frames are received. The present invention effectively achieves a position for multi-frame synchronization and low calculation complexity.

摘要翻译： 本发明公开了一种多帧同步方法，该方法包括：对于每个接收到的子帧，接收机确定接收到的子帧是多帧中的每个子帧的概率，具有 最大概率是接收到N个子帧之后的当前接收到的子帧的状态。 本发明还公开了一种用于多帧同步的接收装置，包括一个计算模块; 其中所述计算模块被配置为计算接收到的子帧是多帧中的每个子帧的概率，并且基于在N之后具有最大概率的子帧来确定当前接收到的子帧的状态 子帧被接收。 本发明有效地实现了多帧同步的位置和低的计算复杂度。

公开(公告)号：US20130021966A1

公开(公告)日：2013-01-24

申请号：US13258448

申请日：2010-11-17

申请人： Ning Qiu ,  Qiang Li ,  Wenqi Zeng ,  Tiankun Yu ,  Zhongwei Liu ,  Yannan Xing ,  Lihong Liang ,  Liwen Li ,  Feng Lin ,  Jintao Chu

发明人： Ning Qiu ,  Qiang Li ,  Wenqi Zeng ,  Tiankun Yu ,  Zhongwei Liu ,  Yannan Xing ,  Lihong Liang ,  Liwen Li ,  Feng Lin ,  Jintao Chu

IPC分类号： H04W56/00

CPC分类号： H04B1/7087

摘要： The invention provides a method and an apparatus for estimating frequency deviation, the method comprising: after receiving a sub-frame, transforming a downlink synchronized code of the sub-frame to a frequency domain, and performing a correlation operation between the transformed downlink synchronized code and a local frequency domain synchronized code to obtain a conjugate downlink synchronized code sequence; judging a location of a maximum value in the conjugate downlink synchronized code sequence, and calculating a frequency deviation value according to the location of the maximum value. The estimating method provided in the invention can realize a stable work with no need of a precise sampling value location, an accurate timing synchronization, or even obtaining the information for the multi-path distribution and locations.

摘要翻译： 本发明提供一种用于估计频偏的方法和装置，该方法包括：在接收到子帧之后，将子帧的下行同步码变换为频域，并且在经变换的下行同步码之间进行相关运算 和本地频域同步码，以获得共轭下行同步码序列; 判断所述共轭下行同步码序列中的最大值的位置，并根据所述最大值的位置来计算频率偏差值。 本发明提供的估计方法可以实现稳定的工作，不需要精确的采样值位置，精确的定时同步，甚至获得多径分布和位置的信息。

公开(公告)号：US20130116957A1

公开(公告)日：2013-05-09

申请号：US13810813

申请日：2011-02-16

申请人： Ning Qiu ,  Qiang Li ,  Wenqi Zeng ,  Tiankun Yu ,  Zhong Wei Liu ,  Yannan Xing ,  Lihong Liang ,  Liwen Li ,  Feng Lin ,  Jintao Chu ,  Xinhua Chen

发明人： Ning Qiu ,  Qiang Li ,  Wenqi Zeng ,  Tiankun Yu ,  Zhong Wei Liu ,  Yannan Xing ,  Lihong Liang ,  Liwen Li ,  Feng Lin ,  Jintao Chu ,  Xinhua Chen

IPC分类号： G01R23/02 ,  G06F17/11

CPC分类号： G01R23/02 ,  G06F17/11 ,  H04L27/266 ,  H04L27/2679

摘要： The disclosure discloses a fine frequency offset estimation method and apparatus. The method comprises: calculating a first accumulated estimation value corresponding to a first multiframe state according to a phase relevant value of a subframe and a phase of a subframe in the first multiframe state; calculating a second accumulated estimation value corresponding to a second multiframe state according to the phase relevant value of the subframe and a phase of a subframe in the second multiframe state; determining that a decision result of a multiframe state is the first multiframe state or the second multiframe state according to the first accumulated estimation value and the second accumulated estimation value; and performing a fine frequency offset estimation according to the decision result of the multiframe state. The apparatus disclosed in the disclosure is less coupled with other modules, has excellent performance in various environments, and realizes the unbiased estimation of timing offset.

摘要翻译： 本公开公开了一种精细的频率偏移估计方法和装置。 该方法包括：根据第一多帧状态的子帧的相位相关值和子帧的相位，计算与第一复帧状态对应的第一累积估计值; 根据子帧的相位相关值和第二多帧状态的子帧的相位，计算与第二多帧状态对应的第二累积估计值; 根据第一累积估计值和第二累积估计值，确定多帧状态的判定结果是第一多帧状态或第二多帧状态; 以及根据多帧状态的判定结果进行精细的频率偏移估计。 本公开中公开的装置与其他模块耦合较少，在各种环境中具有优异的性能，并且实现了对时间偏移的无偏估计。