发明申请
US20060093021A1 Code acquisition device and method using two-step search process in DS-CDMA UWB modem
失效
在DS-CDMA UWB调制解调器中使用两步搜索过程的码采集设备和方法
- 专利标题： Code acquisition device and method using two-step search process in DS-CDMA UWB modem
- 专利标题（中）： 在DS-CDMA UWB调制解调器中使用两步搜索过程的码采集设备和方法
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申请号： US11063583申请日： 2005-02-24
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公开(公告)号： US20060093021A1公开(公告)日： 2006-05-04
- 发明人: Bub Kang , Kyu Kang , Sangsung Choi , Kwang Park
- 申请人： Bub Kang , Kyu Kang , Sangsung Choi , Kwang Park
- 专利权人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
- 当前专利权人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
- 优先权： KR2004-88764 20041103
- 主分类号： H04B1/707
- IPC分类号： H04B1/707
摘要：
There is provided a code acquisition device and method using a two-step search process in a DS-CDMA UWB modem. The device includes: an I/Q channel symbol generating unit for, generating a plurality (i) of nth I/Q channel symbols in a first search process and generating a plurality of nth I/Q channel symbols in a second search process; a spread code selecting unit for receiving the plurality of nth I/Q channel symbols in the first search process; an NNC2NS tap I/Q channel symbol matched filter unit for, in the second search process, receiving the plurality (i) of nth I/Q channel symbols; a switching unit for changing to a closed state of the second search process; and a super frame and symbol boundary time deciding unit for deciding a super frame time and a symbol boundary time.