专利名称：DEVICE AND METHOD FOR ESTIMATING
TIME OFFSET IN ORTHOGONAL FREQUENCYDIVISION MULTIPLEXING (OFDM) SYSTEM
发明人：LI, Ping,QIN, Hongfeng,KANG, Fengqi申请号：EP09846090.0申请日：20091228公开号：EP2437450A1公开日：20120404
专利附图：
摘要：The present invention discloses a method for estimating time offset in an OFDMsystem comprising obtaining a pilot bit frequency domain channel estimation value of a
target user; transforming the obtained pilot bit frequency domain channel estimationvalue to time domain through inverse Fourier transform; performing multi-user
separation on time domain pilot channel estimation by calculating a length of an effectivechannel impulse response window of the target user, and performing time domain noisereduction on each antenna for each user; searching for a peak in the effective channelimpulse response window for each target user separately to determine a position of thepeak; and calculating a time offset estimation value of the user based on the position ofthe peak. The present invention can improve accuracy of time offset estimation andincrease the scope of time offset estimation, thereby improving accuracy of uplinksynchronization of a terminal.
申请人：ZTE Corporation
地址：ZTE Plaza Keji Road South Hi-Tech Industrial Park Nanshan District Shenzhen,Guangdong 518057 CN
国籍：CN
代理机构：Manitz, Finsterwald & Partner GbR
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