发明申请
- 专利标题: Radio receiver and radio signal receiving method
- 专利标题(中): 无线电接收机和无线电信号接收方法
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申请号: US11452412申请日: 2006-06-14
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公开(公告)号: US20070002728A1公开(公告)日: 2007-01-04
- 发明人: Hiromasa Fujii , Hitoshi Yoshino , Takatoshi Sugiyama
- 申请人: Hiromasa Fujii , Hitoshi Yoshino , Takatoshi Sugiyama
- 申请人地址: JP Chiyoda-ku
- 专利权人: NTT DoCoMo, Inc.
- 当前专利权人: NTT DoCoMo, Inc.
- 当前专利权人地址: JP Chiyoda-ku
- 优先权: JP2005-175781 20050615
- 主分类号: H04J11/00
- IPC分类号: H04J11/00
摘要:
An OFDM receiver includes a timing error detection unit that determines error information based on a difference between receiving timing of a desired signal from a counterpart transmitter and receiving timing of an undesired signal from a non-counterpart transmitter. The timing error detection unit includes a pilot signal detection unit configured to detect a pilot signal of the desired signal and a pilot signal of the undesired signal from an FFT-processed received signal; a first converting unit configured to convert a frequency-domain channel estimate derived from the pilot signal of the desired signal to a first time-domain channel impulse response; a second converting unit configured to convert a frequency-domain channel estimate derived from the pilot signal of the undesired signal to a second time-domain channel impulse response; and an error information determination unit configured to determine the error information based on the first and second channel impulse responses.
公开/授权文献
- US07672221B2 Radio receiver and radio signal receiving method 公开/授权日:2010-03-02
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