发明授权
- 专利标题: Wireless communication method and wireless communication apparatus
- 专利标题(中): 无线通信方法和无线通信装置
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申请号: US12140613申请日: 2008-06-17
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公开(公告)号: US07957480B2公开(公告)日: 2011-06-07
- 发明人: Yoshimasa Egashira , Yasuhiko Tanabe
- 申请人: Yoshimasa Egashira , Yasuhiko Tanabe
- 申请人地址: JP 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 Tokyo
- 代理机构: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 优先权: JP2007-160422 20070618
- 主分类号: H04K1/10
- IPC分类号: H04K1/10 ; H04L27/28 ; H04L27/00
摘要:
A wireless communication apparatus generates transmission signal including first and second pilot signal sequences allocated to first and second frequencies symmetrically located in relation to a center frequency, and third and fourth pilot signal sequences allocated to third and fourth frequencies symmetrically located in relation to the center frequency, quadrature-modulates the transmission signal, to obtain a quadrature modulation signal, quadrature-demodulates the quadrature modulation signal, to obtain a reception signal, extracts first to fourth pilot signal sequences from the reception signal, estimates a first transfer characteristic concerning first and second frequency by using first and second pilot signal sequences, estimates a second transfer characteristic concerning third and fourth frequencies using third and the fourth pilot signal sequences, generates a third transfer characteristic from which an influence of transmission IQ imbalance is removed by using first and second transfer characteristic, and estimates, from the third transfer characteristic, reception IQ imbalance characteristic.