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    • 2. 发明申请
    • DIGITAL DEMODULATOR IN A MULTI-CARRIER SYSTEM
    • 数字解调器在多载波系统中的应用
    • WO9962215A3
    • 2000-03-02
    • PCT/IB9900954
    • 1999-05-26
    • NERA ASAVAHLIN ANDERS
    • VAHLIN ANDERS
    • H04L27/26H04L5/06
    • H04L27/2649H04L27/2633H04L27/264H04L27/2698
    • Method and arrangement (100) for creating two samples of output data per symbol interval in each carrier in demodulation in a system for serial transmission of digital information in the form of complex symbols by means of multi-carrier Offset Quadrature Amplitude Modulation on a maximum of N carriers. A device according to the invention comprises means for converting data from serial to parallel form (110), a filter bank (120), means for phase rotation (130), which arrangement outputs two samples per symbol received, and also at least one means (140, 150) for inverse Fourier transform (IFFT). The invention also comprises separation (120, 300) of the output signals which correspond to those of the maximum of N carriers in the input signal which have even numbers from those of the maximum of N carriers which have odd numbers.
    • 用于在用于以复数符号形式的数字信息的串行传输的系统中的解调中的每个载波中的每个符号间隔的每个符号间隔的两个输出数据样本的方法和装置(100),通过多载波偏移正交幅度调制 N个运营商。 根据本发明的装置包括用于将数据从串行转换成并行形式(110)的装置,滤波器组(120),用于相位旋转的装置(130),该装置输出每个符号接收的两个样本,以及至少一个装置 (140,150),用于逆傅里叶变换(IFFT)。 本发明还包括与输入信号中最大N个载波的输出信号相对应的输出信号的分离(120,300),其具有与具有奇数的N个载波的最大值的偶数的偶数。