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    • 4. 发明授权
    • OFDM receiving system
    • OFDM接收系统
    • US6151295A
    • 2000-11-21
    • US030865
    • 1998-02-26
    • Steve MaDonovan YoungJiang Lei Ma
    • Steve MaDonovan YoungJiang Lei Ma
    • H04J11/00H04L1/00H04L7/00H04L25/03H04L27/26
    • H04L27/2678H04L25/03159H04L27/2607H04L27/2656H04L1/0071H04L2025/03414H04L2025/03522
    • A method of frame synchronization for OFDM point-to-multipoint channels is provided according to a first aspect of the invention, wherein sequences of reference frames are inserted at prescribed intervals between sequences of information frames. Each frame comprises a cyclic prefix, composed of two identical segments of data, which is used for locating a frame synchronization starting point by applying a subtraction function on the two segments of data for locating the starting point at the location of the minimum of the function. A method of channel equalization for OFDM channels is also provided according to a second aspect of the invention, wherein the reference frames and data known to a receiver are used for creating an equalization vector for correcting broadcast errors of the information frames received at the receiver side.
    • 根据本发明的第一方面,提供了一种用于OFDM点对多点信道的帧同步的方法,其中参考帧序列以规定的间隔在信息帧序列之间插入。 每个帧包括由两个相同的数据段组成的循环前缀,其用于通过在两个数据段上应用减法函数来定位帧同步起始点,以便在功能的最小值的位置定位起始点 。 根据本发明的第二方面,还提供了一种用于OFDM信道的信道均衡的方法,其中参考帧和接收机已知的数据用于创建用于校正在接收机侧接收的信息帧的广播误差的均衡矢量 。