【摘要】 从Logistic -Map映射的表达式出发 ,经过一些数学推导得到了一个混沌序列 ,通过对其统计特性的数学表达式的分析 ,发现其与白噪声的统计特性一致 ,非常适合在扩频通信中用作扩频码 .但由于存在截取的问题 ,这种类随机序列的平衡性较差 .为了解决这一问题 ,本文提出了一种新的复合混沌扩频序列———mH序列 ,并采用了交织的方式较好地解决了这个问题 .仿真实验结果表明 ,复合混沌扩频序列具有良好的相关性和平衡性 ,并且具有很强的抗破译能力 .更多还原

【Abstract】 Establishes the mathematical expression of statistical properties of chaotic sequences generated by Logistic_Map and analyses its mathematical properties,points out that the statistical properties are identical with those of white noise, and they can suitably be used as spread spectrum sequences in CDMA; and only because of the random intersection, the balance property of this sequence is not so good,presents mH sequence, a novel complex chaotic spread spectrum sequence,to solve this problem, and concludes from experimental results that the mH sequence followed by a intertexture was a good balance property,and the complex chaotic spread spectrum sequence has good properties and excellent anti_decipher ability.更多还原