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元鉴

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  1. 本文根据直接序列扩频码分多址(DS-CDMA)系统上行链路伪随机码跟踪的特点,给出并分析一种全数字非相干延迟锁相环(DLL),该DLL采用了二元鉴相和数字序贯滤波的实现结构。

    A kind of full-digital non-coherent delay-locked loop ( DLL ) for up-link Pseudo Noise ( PN ) code tracking in DS-CDMA systems is proposed and analyzed . With a binary digital phase detector and a digital sequential filter this DLL achieves good tracking performance with low implementation complexity .

  2. 《四元玉鉴》卷首三图的代数意义

    A study on significance of algebra in " three graphics " of the head for precious mirror of Si-Yuan Yu-Jian