发明授权
US07436915B2 FIR filter of DS-CDMA UWB modem transmitter and control method thereof
有权
DS-CDMA UWB调制解调器发射机的FIR滤波器及其控制方法
- 专利标题： FIR filter of DS-CDMA UWB modem transmitter and control method thereof
- 专利标题（中）： DS-CDMA UWB调制解调器发射机的FIR滤波器及其控制方法
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申请号： US11137468申请日： 2005-05-26
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公开(公告)号： US07436915B2公开(公告)日： 2008-10-14
- 发明人: Kyu Min Kang , Bub Joo Kang , Sangsung Choi , Kwang Roh Park
- 申请人： Kyu Min Kang , Bub Joo Kang , Sangsung Choi , Kwang Roh Park
- 申请人地址： KR Taejon
- 专利权人： Electronics and Telecommunications Research Institute
- 当前专利权人： Electronics and Telecommunications Research Institute
- 当前专利权人地址： KR Taejon
- 代理机构： Lowe Hauptman Ham & Berner, LLP
- 优先权： KR10-2004-0102490 20041207
- 主分类号： H04B1/10
- IPC分类号： H04B1/10
摘要：
An FIR filter of a DS-CDMA UWB modem transmitter and a control method thereof are disclosed. The FIR filter includes an LUT control device for outputting a resultant value of “0” to all adders if data values corresponding to upper three chips H2, M2 and L2 and lower three chips H, M and L are “000000”, and discriminating which group between a first group and a second group the upper/lower data values belong to if the upper/lower data values are not“000000”. The LUT control device provides upper or lower LUT values to the adders using the upper or lower LUT values as they are, or converts the upper or lower LUT values into 2's complements and provides the converted values to the adders according to the discriminated first or second group.