公开(公告)号：US20090141831A1

公开(公告)日：2009-06-04

申请号：US12292530

申请日：2008-11-20

申请人： Zhenning Tao ,  Lei Ll ,  Hisao Nakashima

发明人： Zhenning Tao ,  Lei Ll ,  Hisao Nakashima

IPC分类号： H04L27/00

CPC分类号： H04B10/69 ,  H04L27/0002 ,  H04L27/2273 ,  H04L2027/003

摘要： The present invention relates to a phase error estimator, a coherent receiver and a phase error estimating method. The phase error estimator estimates a phase error in an inputted base band electric signal and feeds back said phase error; said phase error estimator comprises: a pre-decider, for judging a phase of data in said base band electric signal in accordance with said feedback phase error; a phase error complex value extracting section, for extracting a real part and an imaginary part of the phase error in accordance with the judgment result of said pre-decider; a phase error determining section, for determining said phase error in accordance with the real part and the imaginary part of the phase error extracted by the phase error complex value extracting section; and a time delay feeding back section, for delaying said phase error by N number of symbols and feeding back the delayed phase error to said pre-decider, wherein N is an integer greater than 1.

摘要翻译： 本发明涉及相位误差估计器，相干接收机和相位误差估计方法。 相位误差估计器估计输入基带电信号中的相位误差并反馈所述相位误差; 所述相位误差估计器包括：预判定器，用于根据所述反馈相位误差来判断所述基带电信号中的数据相位; 相位误差复数值提取部分，用于根据所述预选择器的判断结果提取相位误差的实部和虚部; 相位误差确定部分，用于根据由相位误差复数值提取部分提取的相位误差的实部和虚部来确定所述相位误差; 以及时间延迟反馈部分，用于将所述相位误差延迟N个符号，并将延迟的相位误差反馈到所述预决定器，其中N是大于1的整数。