专利检索 ap:("Hong Kong Applied Science AND Technology Research Institute Co., Ltd.") AND inv:"Yibing Yao" 第 1 页

1.

发明公开
Method of Large Frequency Offset Estimation for an OFDM Communications System Using Reference Signals 审中-公开

公开(公告)号：US20240259248A1

公开(公告)日：2024-08-01

申请号：US18102323

申请日：2023-01-27

申请人： Hong Kong Applied Science And Technology Research Institute Co., Ltd.

发明人： Zhonghui Zhang , Yuxian Zhang , Yibing Yao

IPC分类号： H04L27/26 , H04L25/02 , H04L27/00

CPC分类号： H04L27/2666 , H04L25/0224 , H04L27/0014 , H04L27/2675 , H04L2027/0026

摘要： Described is a method of performing carrier frequency offset (CFO) estimation of physical channels in a mobile communications system. The method comprises the step of performing channel estimation of a received signal on a physical channel based on multiple orthogonal frequency division multiplex (OFDM) symbols in one or more reference signals (RSs). The method includes determining multiple phase rotation values Φ and corresponding time differences s between different OFDM symbols in the one or more RSs over a base phase rotation range comprising +/−π to obtain a first CFO estimation candidate f0. The base phase rotation range is extended to provide an extended phase rotation range of greater than +/−π to obtain additional CFO estimation candidates f1, f2 . . . fn within the extended phase rotation range.