发明授权
US07649832B2 Wireless communication method using OFDM, OFDM receiving method and apparatus thereof
有权
使用OFDM的无线通信方法,OFDM接收方法及其装置
- 专利标题: Wireless communication method using OFDM, OFDM receiving method and apparatus thereof
- 专利标题(中): 使用OFDM的无线通信方法,OFDM接收方法及其装置
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申请号: US11824028申请日: 2007-06-29
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公开(公告)号: US07649832B2公开(公告)日: 2010-01-19
- 发明人: Yoshimasa Egashira , Yasuhiko Tanabe
- 申请人: Yoshimasa Egashira , Yasuhiko Tanabe
- 申请人地址: JP Minato-ku, Tokyo
- 专利权人: Kabushiki Kaisha Toshiba
- 当前专利权人: Kabushiki Kaisha Toshiba
- 当前专利权人地址: JP Minato-ku, Tokyo
- 代理机构: Ohlandt, Greeley, Ruggiero & Perle, L.L.P.
- 优先权: JP2006-185878 20060705
- 主分类号: H04J11/00
- IPC分类号: H04J11/00
摘要:
A receiving method receiving an OFDM signal including a first OFDM symbol having first and second pilot signals allocated to first and second subcarriers positioned symmetric on the frequency axis, and a second OFDM symbol having third and fourth pilot signals allocated to the first and the second subcarriers, a difference between a product of the first pilot signal and a complex conjugate of the fourth pilot signal and a product of the third pilot signal and a complex conjugate of the second pilot signal being non-zero, estimating a first coefficient representing a change components of an amplitude and a phase, and a second coefficient representing an interference component, using first and second received pilot signals corresponding to the first and third pilot signals, estimating from the first and second coefficients IQ imbalance, and compensating the influence of amplitude and phase errors in accordance with the IQ imbalance.
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