发明申请
- 专利标题: Fine timing acquisition
- 专利标题(中): 精细定时采集
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申请号: US11372394申请日: 2006-03-08
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公开(公告)号: US20060221810A1公开(公告)日: 2006-10-05
- 发明人: Bojan Vrcelj , Fuyun Ling , Raghuraman Krishnamoorthi , Vinay Murthy
- 申请人: Bojan Vrcelj , Fuyun Ling , Raghuraman Krishnamoorthi , Vinay Murthy
- 主分类号: H04J11/00
- IPC分类号: H04J11/00 ; H04J3/06
摘要:
A method for synchronizing timing of a receiver to a received orthogonal frequency division multiplexing (OFDM) signal is disclosed. A first timing acquisition is performed with a first received time division multiplexed (TDM) pilot to determine a course timing estimate of the received OFDM signal. A second timing acquisition is performed with a second TDM pilot to determine a fine timing estimate for a OFDM symbol of the received OFDM signal. In the second timing acquisition, the accumulated energy of channel taps over a detection window is determined and a trailing edge of the accumulated energy curve is detected. A Fourier transform (FT) collection window location for subsequent OFDM symbols is adjusted according to the trailing edge information.
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