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    • 96. 发明公开
    • DIVERSITY RECEPTION DEVICE, DIVERSITY RECEPTION METHOD, AND DIGITAL TELEVISION RECEPTION DEVICE
    • DIVERSITÄTSEMPFANGSVORRICHTUNG,DIVERSITÄTSEMPFANGSVERFAHRENUND DIGITALERFERNSEHEMPFÄNGER
    • EP2200201A1
    • 2010-06-23
    • EP08828735.4
    • 2008-09-01
    • Fujitsu Ten Limited
    • CHINDA, TakeshiTAKAYAMA, KazuoGOHHARA, HidenoriNISHIWAKI, KohzohYOSHIMOTO, Takumi
    • H04J11/00H04B7/08
    • H04B7/08H04B7/0857H04L1/20H04L27/2647
    • The diversity receiving device (10a) has four branches that include first to fourth branches (100a to 400a) to diversity-receive OFDM modulated signals. For example, in the first branch (100a), a complex baseband signal that is detected by an orthogonal demodulating unit (103) is input to both a phase-difference correcting unit (104) and an SN-ratio calculating unit (105); the SN-ratio calculating unit (105) calculates SN ratios using a first-order equation of an output of a symbol in the complex baseband signal; and a combining unit (500) creates an input signal depending on the SN ratios in such a manner that a demodulating unit 700 demodulates the input signal. With this configuration, in diversity receiving of OFDM modulated signals, preferable SN ratios (or CN ratios) are calculated, which enhances the quality of the receiving result.
    • 分集接收装置(10a)具有包括第一至第四分支(100a至400a)的四个分支,以分集接收OFDM调制信号。 例如,在第一分支(100a)中,由正交解调部(103)检测的复基带信号输入到相位差校正部(104)和SN比计算部(105)。 SN比计算单元(105)使用复基带信号中的符号的输出的一阶等式来计算SN比; 并且组合单元(500)以解调单元700解调输入信号的方式根据SN比创建输入信号。 利用这种配置,在OFDM调制信号的分集接收中,计算优选的SN比(或CN比),这提高了接收结果的质量。