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    • 7. 发明授权
    • Data receiving system for receiving data signal faded and delayed
    • 用于接收数据信号的数据接收系统褪色和延迟
    • US5659584A
    • 1997-08-19
    • US593956
    • 1996-01-30
    • Mitsuru UesugiSadaki FutagiKoichi Homma
    • Mitsuru UesugiSadaki FutagiKoichi Homma
    • H03H21/00H04B1/12H04B3/04H04B7/005H04B7/08H04L1/06H04L25/03H04B7/10
    • H04L25/03057H04B1/126H04B7/0845H04L1/06H04L2025/0349
    • A data signal composed of a desired signal faded and delayed and an interference signal faded and delayed is received by a pair of antennas. A direct component of the interference signal and a delay component of the desired signal are removed from the data signals received by the antennas in a decision-feedback type of desired signal equalizing unit, and the direct component of the desired signal and the delay component of the interference signal are removed from the data signals in a decision-feedback type of interference signal equalizing unit. Also, a delay component of the interference signal is removed in the desired signal equalizing unit by subtracting a replica of the delay component of the interference signal produced in a backward tap from a demodulated interference signal produced in the interference signal equalizing unit in a previous operation, and a delay component of the desired signal is removed in the interference signal equalizing unit by subtracting a replica of the delay component of the desired signal produced in another backward tap from a demodulated desired signal produced in the desired signal equalizing unit in the previous operation. Therefore, the demodulated desired signal agreeing with the desired signal is output from the desired signal equalizing unit, and the demodulated interference signal agreeing with the interference signal is output from the interference signal equalizing unit.
    • 由一对天线接收由期望信号褪色和延迟组成的数据信号和衰落和延迟的干扰信号。 干扰信号的直接分量和期望信号的延迟分量从期望信号均衡单元的判决反馈类型中的天线接收的数据信号中去除,并且期望信号和延迟分量的直接分量 干扰信号在干扰信号均衡单元的判决反馈型中从数据信号中去除。 此外,通过从先前的操作中在干扰信号均衡单元中产生的解调干扰信号中减去在后向抽头中产生的干扰信号的延迟分量的副本,在期望的信号均衡单元中去除干扰信号的延迟分量 并且在干扰信号均衡单元中通过从先前操作中在所需信号均衡单元中产生的解调的期望信号中减去在另一个反向抽头中产生的期望信号的延迟分量的副本来去除所需信号的延迟分量 。 因此,从期望信号均衡单元输出与期望信号一致的解调的期望信号,并且从干扰信号均衡单元输出与干扰信号一致的解调干扰信号。