公开(公告)号：US09912512B2

公开(公告)日：2018-03-06

申请号：US15063085

申请日：2016-03-07

Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.

Inventor： Shaohua Zhao ,  Wuxue Ni ,  Biqiang Luo ,  Li Li

IPC: H04J3/00 ,  H04L27/26 ,  H04L27/06 ,  H04L7/04

CPC classification number: H04L27/2663 ,  H04L7/04 ,  H04L27/06 ,  H04L27/14 ,  H04L27/2331 ,  H04L27/2671 ,  H04L27/2675

Abstract: Systems and methods which provide training sequence or preamble-based synchronization with respect to non-coherent modulated signals and/or differentially coherent modulated signals are described. Embodiments provide for time synchronization using a technique for mitigating the effect of carrier frequency offset (CFO) with respect to the received signal. Embodiments of the present invention provide for frequency synchronization using a technique for estimating CFO using a constant bias induced with respect to the received signal by CFO. Additionally or alternatively, embodiments of the present invention provide for frequency synchronization using a technique for estimating CFO using phase rotation caused by CFO. The time synchronization and frequency synchronization of embodiments may be performed independently, without requiring the results of one synchronization operation for performing the other synchronization operation.

公开(公告)号：US20170257248A1

公开(公告)日：2017-09-07

申请号：US15063085

申请日：2016-03-07

Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.

Inventor： Shaohua Zhao ,  Wuxue Ni ,  Biqiang Luo ,  Li Li

IPC: H04L27/26

CPC classification number: H04L27/2663 ,  H04L7/04 ,  H04L27/06 ,  H04L27/14 ,  H04L27/2331 ,  H04L27/2671 ,  H04L27/2675

Abstract: Systems and methods which provide training sequence or preamble-based synchronization with respect to non-coherent modulated signals and/or differentially coherent modulated signals are described. Embodiments provide for time synchronization using a technique for mitigating the effect of carrier frequency offset (CFO) with respect to the received signal. Embodiments of the present invention provide for frequency synchronization using a technique for estimating CFO using a constant bias induced with respect to the received signal by CFO. Additionally or alternatively, embodiments of the present invention provide for frequency synchronization using a technique for estimating CFO using phase rotation caused by CFO. The time synchronization and frequency synchronization of embodiments may be performed independently, without requiring the results of one synchronization operation for performing the other synchronization operation.