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电子学报  2013 

一类非线性扩频序列的构造及其性能分析

DOI: 10.3969/j.issn.0372-2112.2013.10.010, PP. 1939-1943

Keywords: 扩频序列,非线性,本原三项式,反馈函数,镜像,误码率

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Abstract:

基于本原三项式线性函数,构造了一类非线性序列.首先根据非线性序列生成规律,借助逻辑代数理论,推导并提取了非线性序列特征函数,利用特征函数筛分作用,合成了非线性反馈函数,据此实现了非线性序列生成.最后,对该类非线性序列特性进行了分析和计算,并将其应用于直接序列码分多址通信系统(DS-CDMA)仿真实验中,结果表明该类非线性序列不仅具有理想的伪随机特性、良好的线性复杂度,还具有优于m序列、gold序列的误码率.

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