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    Device and method for vector equalization of an OFDM signal
    1.
    发明公开
    Device and method for vector equalization of an OFDM signal 失效
    Vorrichtung und Verfahren zur Vektorentzerrung eines OFDM-Signals

    公开(公告)号：EP0833484A1

    公开(公告)日：1998-04-01

    申请号：EP97402192.5

    申请日：1997-09-19

    申请人： THOMSON multimedia

    发明人： Pecot, Michel ,  Demoulin, Vincent

    IPC分类号： H04L27/26

    CPC分类号： H04L25/03159 ,  H04L25/03012 ,  H04L2025/03414 ,  H04L2025/03522 ,  H04L2025/03605

    摘要： The present invention belongs to the field of transmission of a signal, using OFDM modulation (Orthogonal Frequency Division Multiplexing), from a transmitter to at least one receiver, via a transmission channel. The invention relates in particular to a device and a method for equalization of the received OFDM signal. Said equalization device is fitted into the reception system between a synchronization module and a module for binary decoding of the received signal, in which the receiver includes a recursive vector equalizer (10) capable of correcting the received signal in the time domain.
    According to the invention, the recursive vector equalizer (10) includes computation means (16;22;24;40;44;46;56) capable of estimating each transmitted symbol as a function of an estimate of the transmitted symbol which precedes the said transmitted symbol.
    The receiver includes at least two estimators (12;14) capable of dynamically computing the coefficients of at least two triangular matrices representing the impulse response of the transmission channel.

    摘要翻译： 本发明通过传输信道属于从发射机到至少一个接收机的使用OFDM调制（正交频分复用）的信号传输领域。 本发明特别涉及用于均衡接收的OFDM信号的装置和方法。 所述均衡装置在同步模块和用于接收信号的二进制解码的模块之间的接收系统中装配，其中接收机包括能够在时域中校正接收信号的递归矢量均衡器（10）。 根据本发明，递归向量均衡器（10）包括计算装置（16; 22; 24; 40; 44; 46; 56），其能够估计作为所述发送符号之前的发送符号的估计的每个发送符号 传输符号。 该接收机包括能够动态地计算表示传输信道的脉冲响应的至少两个三角矩阵的系数的至少两个估计器（12; 14）。