公开(公告)号：US20140177489A1

公开(公告)日：2014-06-26

申请号：US14189471

申请日：2014-02-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Lianfu Liu ,  Jun Ma

IPC: H04J3/06 ,  H04B7/26

CPC classification number: H04J3/06 ,  H04B7/2643 ,  H04L27/0014 ,  H04L27/2273 ,  H04L2027/0024 ,  H04L2027/0048

Abstract: Embodiments of the present invention provide a carrier synchronization method, circuit, and system. The method includes performing n times frequency multiplication on a received signal; performing narrowband filtering at least twice and rectangular wave shaping at least twice on the signal obtained after the n times frequency multiplication; and performing n times frequency division on the signal obtained after the filtering and shaping, to restore a carrier signal. The variable n is a positive integer greater than or equal to 4.

Abstract translation: 本发明的实施例提供一种载波同步方法，电路和系统。 该方法包括对接收到的信号执行n次倍频; 执行窄带滤波至少两次，并在n次倍频后获得的信号进行矩形波整形至少两次; 对滤波和整形后获得的信号执行n次分频，以恢复载波信号。 变量n是大于或等于4的正整数。

公开(公告)号：US09774412B2

公开(公告)日：2017-09-26

申请号：US14189471

申请日：2014-02-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lianfu Liu ,  Jun Ma

IPC: H04L5/14 ,  H04J3/06 ,  H04L27/00 ,  H04B7/26 ,  H04L27/227

CPC classification number: H04J3/06 ,  H04B7/2643 ,  H04L27/0014 ,  H04L27/2273 ,  H04L2027/0024 ,  H04L2027/0048

Abstract: Embodiments of the present invention provide a carrier synchronization method, circuit, and system. The method includes performing n times frequency multiplication on a received signal; performing narrowband filtering at least twice and rectangular wave shaping at least twice on the signal obtained after the n times frequency multiplication; and performing n times frequency division on the signal obtained after the filtering and shaping, to restore a carrier signal. The variable n is a positive integer greater than or equal to 4.