QAM SYMBOL SLICING METHOD AND APPARATUS
    1.
    发明申请
    QAM SYMBOL SLICING METHOD AND APPARATUS 失效
    QAM符号切片方法和装置

    公开(公告)号:US20090232255A1

    公开(公告)日:2009-09-17

    申请号:US12473051

    申请日:2009-05-27

    IPC分类号: H04L27/34

    CPC分类号: H04L27/3881

    摘要: A method for slicing a symbol in a QAM digital demodulator, includes acquiring a digital integer value by sampling a symbol signal in an in-phase coordinate or a quadrature-phase coordinate; and extracting a symbol bit sequence in the in-phase coordinate or the quadrature-phase coordinate from a whole bit sequence of the digital integer value by using an LSB thereof. Further, a symbol slicer for detecting a QAM symbol, includes digital sampling units, each of which acquires a digital integer value by sampling a symbol signal in an in-phase coordinate or a quadrature-phase coordinate; and a symbol bit sequence extracting unit that extracts a symbol bit sequence in the in-phase coordinate or the quadrature-phase coordinate from a whole bit sequence of the digital integer value by using an LSB thereof.

    摘要翻译: 一种用于在QAM数字解调器中对符号进行分片的方法,包括通过对同相坐标或正交相位坐标中的符号信号进行采样来获取数字整数值; 以及通过使用其LSB来从数字整数值的整个比特序列中提取同相坐标或正交相位坐标中的符号比特序列。 此外,用于检测QAM符号的符号限幅器包括数字采样单元,每个采样单元通过对同相坐标或正交相位坐标中的符号信号进行采样来获取数字整数值; 以及符号比特序列提取单元,通过使用其LSB,从数字整数值的整个比特序列中提取同相坐标或正交相位坐标中的符号比特序列。

    RESIDUAL FREQUENCY OFFSET COMPENSATION APPARATUS USING PHASE SHIFT COMPENSATION SCHEME
    2.
    发明申请
    RESIDUAL FREQUENCY OFFSET COMPENSATION APPARATUS USING PHASE SHIFT COMPENSATION SCHEME 审中-公开
    使用相位移位补偿方案的残差偏移补偿装置

    公开(公告)号:US20090154616A1

    公开(公告)日:2009-06-18

    申请号:US12333712

    申请日:2008-12-12

    IPC分类号: H04L27/06

    摘要: A residual frequency offset compensation apparatus is provided. The residual frequency offset compensation apparatus includes: a basic phase offset compensation unit compensating input symbols using a previously stored basic phase offset and generating first symbols; a phase shift calculation unit calculating a phase shift value of each of a predetermined number of the first symbols using first detection symbols and the first symbols, the first detection symbols being generated by detecting the first symbols; a phase shift compensation unit compensating the first symbols based on an average of the phase shift values; and a basic phase offset update unit updating the basic phase offset based on the phase shift values.

    摘要翻译: 提供了一种残余频率偏移补偿装置。 所述残余频率偏移补偿装置包括:基本相位偏移补偿单元,其使用先前存储的基本相位偏移补偿输入符号并产生第一符号; 相移计算单元,使用第一检测符号和第一符号来计算预定数量的第一符号中的每一个的相移值,通过检测第一符号来生成第一检测符号; 相移补偿单元,基于相移值的平均值补偿第一符号; 以及基本相位偏移更新单元,其基于相移值来更新基本相位偏移。