公开(公告)号：US20020097813A1

公开(公告)日：2002-07-25

申请号：US09766711

申请日：2001-01-22

申请人： PHILIPS ELECTRONICS NORTH AMERICA CORPORATION.

发明人： Krishnamurthy Vaidyanathan

IPC分类号： H04L027/14 ,  H04L007/00

CPC分类号： H04L27/0014 ,  H04L27/066 ,  H04L2027/0065

摘要： There is disclosed an improved system and method for providing frequency domain synchronization for a single carrier signal such as a vestigial sideband signal. The system comprises a synchronization circuit that is capable of obtaining a coarse frequency estimate of the single carrier signal and a fine frequency estimate of the single carrier signal. The system also comprises a three state machine for obtaining an accurate frequency estimate from three separately obtained frequency estimates. The system also comprises a DC estimator circuit that is capable of providing a time domain DC estimate. The system provides a pilot carrier recovery circuit for single carrier signals that has a linear transfer function.

摘要翻译： 公开了用于为诸如残留边带信号的单载波信号提供频域同步的改进的系统和方法。 该系统包括能够获得单载波信号的粗略频率估计和单载波信号的精细频率估计的同步电路。 该系统还包括三状态机，用于从三个单独获得的频率估计中获得准确的频率估计。 该系统还包括能够提供时域DC估计的DC估计器电路。 该系统为具有线性传递功能的单载波信号提供导频载波恢复电路。