发明授权
- 专利标题： DC offset compensation method and DC offset compensation device
- 专利标题（中）： 直流偏移补偿方法和直流偏移补偿装置
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申请号： US11819984申请日： 2007-06-29
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公开(公告)号： US08452250B2公开(公告)日： 2013-05-28
- 发明人: Hiroyoshi Ishikawa , Nobukazu Fudaba , Kazuo Nagatani , Hajime Hamada , Tokuro Kubo
- 申请人： Hiroyoshi Ishikawa , Nobukazu Fudaba , Kazuo Nagatani , Hajime Hamada , Tokuro Kubo
- 申请人地址： JP Kawasaki
- 专利权人： Fujitsu Limited
- 当前专利权人： Fujitsu Limited
- 当前专利权人地址： JP Kawasaki
- 代理机构： Smith, Gambrell & Russell, LLP
- 主分类号： H04B1/30
- IPC分类号： H04B1/30
摘要：
A DC offset component that occurs in a quadrature modulation system, and that is contained in a modulated transmit signal, is compensated for with good accuracy. In a DC offset compensation method according to the present invention, a DC offset correction value obtained from the transmit signal is weighted in accordance with the signal level of an input signal which is transmit data input to the quadrature modulation system, and the DC offset component contained in the transmit signal is compensated for by using the thus weighted DC offset correction value.
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