发明申请
- 专利标题： CALIBRATION APPARATUS AND METHOD FOR QUADRATURE MODULATION SYSTEM
- 专利标题（中）： 校准装置和方法调制系统
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申请号： US12101900申请日： 2008-04-11
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公开(公告)号： US20080285682A1公开(公告)日： 2008-11-20
- 发明人: Lichung Chu , Kiyoyuki Ihara , Kenji Kamitani , Fumitaka Iizuka
- 申请人： Lichung Chu , Kiyoyuki Ihara , Kenji Kamitani , Fumitaka Iizuka
- 申请人地址： US CA San Diego
- 专利权人： TRDA, Inc.
- 当前专利权人： TRDA, Inc.
- 当前专利权人地址： US CA San Diego
- 主分类号： H04L27/36
- IPC分类号： H04L27/36
摘要：
A calibration apparatus for a quadrature modulation system with a quadrature modulation compensator and a logarithmic envelop detector, wherein a parameter update of the quadrature modulation compensator is derived by utilizing a transformed offset value and a transformed gain value of the logarithmic envelop detector as intermediate parameters, and the transformed offset and the transformed gain parameters are used in a training sequence of the quadrature modulation compensator.
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