发明申请
US20110170589A1 APPARATUS FOR ESTIMATING AND CORRECTING BASEBAND FREQUENCY ERROR IN A RECEIVER
失效
用于接收器中估计和校正基带频率误差的装置
- 专利标题: APPARATUS FOR ESTIMATING AND CORRECTING BASEBAND FREQUENCY ERROR IN A RECEIVER
- 专利标题(中): 用于接收器中估计和校正基带频率误差的装置
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申请号: US13053856申请日: 2011-03-22
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公开(公告)号: US20110170589A1公开(公告)日: 2011-07-14
- 发明人: Philip J. Pietraski , Rui Yang , Mihaela C. Beluri , Alpaslan Demir
- 申请人: Philip J. Pietraski , Rui Yang , Mihaela C. Beluri , Alpaslan Demir
- 申请人地址: US DE Wilmington
- 专利权人: INTERDIGITAL TECHNOLOGY CORPORATION
- 当前专利权人: INTERDIGITAL TECHNOLOGY CORPORATION
- 当前专利权人地址: US DE Wilmington
- 主分类号: H04L27/01
- IPC分类号: H04L27/01
摘要:
An apparatus for estimating and correcting baseband frequency error in a receiver is disclosed. An equalizer performs equalization on a sample data stream and generates filter tap values based on the equalization. An estimated frequency error signal is generated based on at least one of the filter tap values. A rotating phasor is generated based on the estimated frequency error signal. The rotating phasor signal is multiplied with the sample data stream to correct the frequency of the sample data stream. Alternatively, a channel estimator performs channel estimation and generates Rake receive finger weights based on at least one of the finger weights. An estimated frequency error signal is generated based on at least one of the finger weights.