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1. (WO2010118596) METHOD AND DEVICE FOR CORRECTING FREQUENCY OFFSET

Pub. No.:    WO/2010/118596    International Application No.:    PCT/CN2009/073541
Publication Date: Fri Oct 22 01:59:59 CEST 2010 International Filing Date: Thu Aug 27 01:59:59 CEST 2009
IPC: H04L 27/00
H04W 88/02
H03J 7/00
Applicants: ZTE CORPORATION
中兴通讯股份有限公司
WANG, Man
王曼
HUANG, Xu
黄旭
Inventors: WANG, Man
王曼
HUANG, Xu
黄旭
Title: METHOD AND DEVICE FOR CORRECTING FREQUENCY OFFSET
Abstract:
The present invention discloses a method and device for correcting frequency offset. The device is composed of an Automatic Frequency Control (AFC) circuit and a baseband processing module. The baseband processing module is located behind the AFC circuit and used for performing baseband processing on the frequency output by the AFC circuit, estimating the frequency offset, correcting the frequency output by the AFC circuit according to the frequency offset and feeding back the corrected frequency to the AFC circuit. The AFC circuit is used for performing automatic frequency control, before the baseband processing module, on the signal input into the AFC circuit. The present invention also discloses a method for correcting frequency offset, enables the Doppler frequency offset caused by high speed movement to be effectively corrected in real time, enables the UE to reconstruct the signal sent by the base station correctly and improves the communication quality.