基于四阶累积量二维切片的直接扩频序列周期检测
he Duration Estimation of PN Sequence of DS-SS Signal Based on Fourth-Cumulant 2-D Slice
基于四阶累积量二维切片的直扩信号二次谱检测法理论上能够完全抑制高斯白噪声的影响，降低了伪码周期检测的信噪比的门限。理论推导和仿真结果表明，该方法能在极低信噪比的条件下检测多个用户的直扩信号的扩频周期。本文还充分利用了二次谱峰值的位置信息，采用近似最大公约数的方法，有效地检测扩频序列的周期。
new spectrum reprocessing method based on fourth-order cumulant 2-D is presented to estimate the duration of the pseudo noise(PN) sequence of direct spread spectrum sequence(DS-SS) signal without any prior knowledge in much lower signal noise ratio(SNR). A theoretical analysis will show that detection is also applicable for multiusers. With the positions of peak values, the duration of PN can be detected using approximate greatest common divisor.
赵晓艳、石明军、张新发、孟令彬、王海婴
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直扩信号，扩频周期，四阶累积量，二维切片
S-SS duration estimation，fourth-order cumulant，2-D slice
赵晓艳,石明军,张新发,孟令彬,王海婴.基于四阶累积量二维切片的直接扩频序列周期检测[EB/OL].(2008-01-07)[2025-08-17].http://www.paper.edu.cn/releasepaper/content/200801-165.点此复制
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