一類混沌映射擴頻序列的研究
Research on Spreading Sequences with Chaotic Maps
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摘要: Logistic混沌映射可產(chǎn)生用于擴頻系統(tǒng)的跳頻序列。該文用Logistic映射構(gòu)造了一個二維混沌映射,證明了該二維混沌映射軌道點的概率密度分布,提出了一種混沌跳頻序列的產(chǎn)生方法,并通過數(shù)值仿真分析了此類擴頻序列的奇、偶相關(guān)特性和序列碼的平衡特性.結(jié)果表明:該混沌跳頻序列具有良好的性能。
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關(guān)鍵詞:
- 混沌; Logistic映射; 擴頻序列; 奇偶相關(guān)特性
Abstract: Spreading sequence for Frequency Hopping(FH) sequence can be generated with logistic map. This paper constructs a second-order chaotic map based on logistic map, proves its probability density distribution, and proposes a method to generate chaotic frequency-hopping sequence. It also analyzes character of even and odd correlations by numerical simulation. The results shows the sequence has excellent properties. -
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