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    CHANNEL ESTIMATION DEVICE, EQUALIZATION DEVICE, AND EQUALIZATION METHOD IN THE ESTIMATION
    3.
    发明公开
    CHANNEL ESTIMATION DEVICE, EQUALIZATION DEVICE, AND EQUALIZATION METHOD IN THE ESTIMATION 有权
    KANALSCHÄTZUNGSEIRICHTUNG，ENTZERRUNGSEINRICHTUNG UND ENTZERRUNGSVERFAHREN BEI DERSCHÄTZUNG

    公开(公告)号：EP2120359A4

    公开(公告)日：2017-01-18

    申请号：EP08710849

    申请日：2008-02-06

    申请人： NEC CORP

    发明人： KIMATA MASAYUKI

    IPC分类号： H04L25/02 ,  H04L25/03 ,  H04L27/26

    CPC分类号： H04L25/0204 ,  H04L25/0224 ,  H04L25/03006 ,  H04L25/03828 ,  H04L25/03834 ,  H04L27/2647

    摘要： The present invention provides a channel estimation apparatus in which channel estimation may be made higher than heretofore in accuracy and may be used for calculating the weight for an equalization filter to achieve an optimum equalizing performance. A subcarrier copying unit 20 copies K items of end-side subcarriers, using the channel estimation obtained by a correlation processing unit 14 and K which is a subcarrier copy number. An IDFT unit 15 transforms the channel estimation obtained at the subcarrier copying unit 20 into the time domain channel response. A noise path removing unit 16 removes noise paths from the channel response output from the IDFT unit 15. A DFT unit 17 performs DFT of the channel response, from which the noise paths are removed by the noise path removing unit 16, to output a noise-suppressed frequency domain channel estimation value. A weight calculation unit 5 inputs the frequency domain channel estimation value output from the DFT unit 17 to calculate an equalizing weight.

    摘要翻译： 本发明提供了一种信道估计装置，其中信道估计可以比以前更精确，并且可以用于计算均衡滤波器的权重以实现最佳均衡性能。 副载波复制单元20使用由相关处理单元14获得的信道估计和作为副载波复制数的K来复制K个端侧子载波。 IDFT单元15将在子载波复制单元20处获得的信道估计转换为时域信道响应。 噪声路径去除单元16从IDFT单元15输出的信道响应中去除噪声路径.DFT单元17执行信道响应的DFT，噪声路径被噪声路径去除单元16除去，以输出噪声 抑制频域信道估计值。 权重计算单元5输入从DFT单元17输出的频域信道估计值，以计算均衡权重。

    RECEIVER AND RECEIVING METHOD
    4.
    发明公开
    RECEIVER AND RECEIVING METHOD 审中-公开
    接收装置与方法

    公开(公告)号：EP2254270A4

    公开(公告)日：2016-01-20

    申请号：EP09711522

    申请日：2009-03-12

    申请人： NEC CORP

    发明人： KIMATA MASAYUKI

    IPC分类号： H04J99/00 ,  H04B7/005 ,  H04B7/04 ,  H04B7/08 ,  H04J11/00 ,  H04L25/03 ,  H04L25/06

    CPC分类号： H04B7/0854 ,  H04B7/0413 ,  H04L25/03159 ,  H04L25/03891 ,  H04L25/067 ,  H04L2025/03426

    摘要： The present invention provides a MIMO receiving apparatus and a receiving method in which a signal carrier signal is transformed into a frequency domain signal to perform equalization by signal processing in the frequency domain, and in which an equalization performance is to be improved. A residual interference calculation unit 17 inputs noise-suppressed frequency domain channel estimation values, output from FFT units 12-1-1 to 12-M-N, equalizing weights calculated by a weight calculating unit 13, equalized signals from equalization processing by an equalization filter 14 and reference signals generated by reference signal generating units 16-1 to 16-M to calculate a residual interference. The likelihood correction units 18-1 to 18-M receive time domain equalized signal from the IDFT units 15-1 to 15-M and the residual interference calculated by the residual interference calculation unit 17 to correct the likelihood of the equalized signal ( Fig.1 ).