发明授权
- 专利标题: Data transmission method and data reception method
- 专利标题(中): 数据传输方法和数据接收方法
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申请号: US10573044申请日: 2005-03-09
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公开(公告)号: US07702027B2公开(公告)日: 2010-04-20
- 发明人: Naganori Shirakata , Yasuo Harada , Koichiro Tanaka , Tomohiro Kimura , Shuya Hosokawa , Yoshio Urabe
- 申请人: Naganori Shirakata , Yasuo Harada , Koichiro Tanaka , Tomohiro Kimura , Shuya Hosokawa , Yoshio Urabe
- 申请人地址: JP Osaksa
- 专利权人: Panasonic Corporation
- 当前专利权人: Panasonic Corporation
- 当前专利权人地址: JP Osaksa
- 代理机构: Wenderoth, Lind & Ponack, L.L.P.
- 优先权: JP2004-069440 20040311; JP2004-225840 20040802
- 国际申请: PCT/JP2005/004110 WO 20050309
- 国际公布: WO2005/088884 WO 20050922
- 主分类号: H04B7/02
- IPC分类号: H04B7/02
摘要:
In a transfer apparatus to which MIMO-OFDM is applied, a data transmission method and a data reception method are provided in which, even when there are frequency errors varying among transfer paths, the precision of estimation of an inverse propagation coefficient function can be improved, thereby making it possible to suppress a degradation in characteristics. Among symbols composed of a plurality of subcarriers orthognal to each other, the transfer apparatus uses, as a synchronization symbol, a symbol in which predetermined amplitudes and phases are assigned to a plurality of subcarriers spaced at predetermined frequency intervals. The synchronization symbol is divided into transmission antennas to generate a plurality of synchronization subsymbols, which are in turn simultaneously transmitted from a plurality of transmission antennas. A reception apparatus estimates a frequency error for each transfer path based on synchronization subsymbols included in signals received by a plurality of reception antennas, and based on the estimated frequency errors, corrects the received signals.
公开/授权文献
- US20070121750A1 Data transmission method and data reception method 公开/授权日:2007-05-31