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    • 3. 发明公开
    • 송신기 신호를 식별하기 위한 저간섭 확산 코드용 부분상관정합필터 및 필터링 방법
    • 使用干扰消除扩展码进行TXID的部分匹配滤波
    • KR1020080018078A
    • 2008-02-27
    • KR1020060125156
    • 2006-12-08
    • 한국전자통신연구원서울과학기술대학교 산학협력단
    • 박성익이재영음호민서재현김흥묵이용태김승원임종수이수인경문건차재상김성권
    • H04B1/7093
    • H04B1/7093H04B1/7097
    • A partial correlation matched filter for TxID(Transmitter Identification) using an interference cancelled spreading code and a filtering method thereof are provided to deduce correlation characteristics within a short time by minimizing chip correlation operations of a correlation calculation part of a ZCD(Zero Correlation Duration) code having a long period used for watermarking in a receiving terminal, and reduce hardware volume and power consumption. A first shift register(22) shifts a transmitted spreading code. A ZCD code controller(21) outputs a switch signal in order to remove zero components among the spreading codes outputted from the first shift register. A component removing unit removes the zero components from the output of the first shift register through the switch signal of the ZCD code controller. A partial correlator(23) calculates a correlation value with a reference code after receiving the spreading code where the zero components are removed by the zero component removing unit.
    • 提供使用干扰抵消的扩展码的TxID(发射机识别)的部分相关匹配滤波器及其滤波方法,以通过使ZCD的相关计算部分(零相关持续时间)最小化码片相关运算来在短时间内推断相关特性, 具有用于在接收终端中进行水印处理的长周期的代码,并且减少硬件体积和功耗。 第一移位寄存器(22)移位发送的扩展码。 ZCD码控制器(21)输出开关信号,以便从第一移位寄存器输出的扩展码中去除零分量。 元件去除单元通过ZCD代码控制器的开关信号从第一移位寄存器的输出中除去零分量。 部分相关器(23)在接收到由零分量去除单元去除零分量的扩展码之后,用参考码计算相关值。