公开(公告)号：WO2014171973A1

公开(公告)日：2014-10-23

申请号：PCT/US2013/070076

申请日：2013-11-14

Applicant: COMTECH EF DATA CORP.

Inventor： PENG, Lianfeng

IPC: H04B1/7156

CPC classification number: H04B1/7073 ,  H04B1/709

Abstract: A method of detecting FN code synchronization for a DSSS signal comprising receiving a DSSS data signal of data frames comprised of I and Q symbols, at least a portion of each data frame comprising a unique word, demodulating the data signal into I and Q chip samples, filtering the I and Q chip samples and outputting the filtered I and Q chip samples to a chip stream controller which outputs the plurality of chip streams to a correlation matrix that correlates the plurality of chip streams with the chipped unique word and outputs a correlated data stream, A plurality of FFTs is run on the correlated output data stream and a processor searches for a maximum frequency bin power of each FF'T. A PN synchronization detector searches for a maximum frequency bin power among the plurality of FFT runs and determines whether PN synchronization is present.

Abstract translation: 一种检测DSSS信号的FN码同步的方法，包括接收由I和Q符号组成的数据帧的DSSS数据信号，每个数据帧的至少一部分包括唯一字，将数据信号解调为I和Q码片样本 对I和Q芯片样本进行滤波并将滤波后的I和Q码片样本输出到芯片流控制器，芯片流控制器将多个芯片流输出到相关矩阵，该相关矩阵将多个芯片流与切片唯一字相关，并输出相关数据 在相关输出数据流上运行多个FFT，并且处理器搜索每个FF'T的最大频率仓功率。 PN同步检测器在多个FFT运行中搜索最大频率箱功率，并确定是否存在PN同步。

公开(公告)号：EP2941828A1

公开(公告)日：2015-11-11

申请号：EP13882343.0

申请日：2013-11-14

Applicant: Comtech EF Data Corp.

Inventor： PENG, Lianfeng

IPC: H04B1/7156

CPC classification number: H04B1/7073 ,  H04B1/709

Abstract: A method of detecting FN code synchronization for a DSSS signal comprising receiving a DSSS data signal of data frames comprised of I and Q symbols, at least a portion of each data frame comprising a unique word, demodulating the data signal into I and Q chip samples, filtering the I and Q chip samples and outputting the filtered I and Q chip samples to a chip stream controller which outputs the plurality of chip streams to a correlation matrix that correlates the plurality of chip streams with the chipped unique word and outputs a correlated data stream, A plurality of FFTs is run on the correlated output data stream and a processor searches for a maximum frequency bin power of each FF'T. A PN synchronization detector searches for a maximum frequency bin power among the plurality of FFT runs and determines whether PN synchronization is present.