发明授权
US07903717B2 Receiver, receiving method, program and information recording medium
有权
接收机，接收方式，程序和信息记录介质
- 专利标题： Receiver, receiving method, program and information recording medium
- 专利标题（中）： 接收机，接收方式，程序和信息记录介质
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申请号： US11817625申请日： 2005-03-02
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公开(公告)号： US07903717B2公开(公告)日： 2011-03-08
- 发明人: Satoshi Takahashi , Hiroshi Harada , Chang-Jun Ahn
- 申请人： Satoshi Takahashi , Hiroshi Harada , Chang-Jun Ahn
- 申请人地址： JP Tokyo
- 专利权人： National Institute of Information and Communications Technology, Incorporated Administrative Agency
- 当前专利权人： National Institute of Information and Communications Technology, Incorporated Administrative Agency
- 当前专利权人地址： JP Tokyo
- 代理机构： Honigman Miller Schwartz and Cohn LLP
- 国际申请： PCT/JP2005/003534 WO 20050302
- 国际公布： WO2006/092859 WO 20060908
- 主分类号： H04B1/00
- IPC分类号： H04B1/00
摘要：
When a receiver (200) receives a signal transmitted from a transmitter, an A/D converter (204) converts the signal into a digital signal having two or more levels by A/D conversion. A zero-level detector (207) converts the signal into a two-level digital signal of positive and negative levels. The converted signals are subjected to spectrum despreading by correlators (206, 208), respectively. Whichever signal has a higher intensity is selected by absolute value detectors (209, 210), a comparator (211), and a switch (212). A decoder (213) decodes the selected signal. In a receiving state where the zero-level detector (207) is selected, the transmitter transmits the transmission signal after the signal is converted into a two-level signal. In a receiving state where the A/D converter (204) is selected, the transmitter transmits the transmission signal after the signal is converted into a signal having two or more levels.
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