混沌擴(kuò)頻序列產(chǎn)生器
A CHAOTIC SPREADING SEQUENCES GENERATOR
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摘要: 本文給出了基于一類(lèi)混沌映射的擴(kuò)頻序列產(chǎn)生方法,運(yùn)用混沌的遍歷理論分析了周期趨于無(wú)窮時(shí)混沌擴(kuò)頻序列的性能,并對(duì)實(shí)際性能作了計(jì)算機(jī)模擬。結(jié)果顯示,混沌擴(kuò)頻序列具有良好的平衡特性、相關(guān)特性和理想的線性復(fù)雜度,且數(shù)量極多,是直接序列擴(kuò)頻通信的優(yōu)選序列。
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關(guān)鍵詞:
- 混沌; 擴(kuò)頻序列; 相關(guān)函數(shù); 線性復(fù)雜度
Abstract: A new spreading sequences generator based on a class of chaotic maps is proposed. The theoretical performances of such sequences are shown to be good using the ergodic theory of chaos. The practical performances are then found by computer simulation. Results show that the balance property, the correlation property and the linear complexity of chaotic spreading sequences are quite good. Therefore chaotic spreading sequences are good candidates for direct-sequence spread-spectrum communications. -
郝柏林.從拋物線談起--混沌動(dòng)力學(xué)引論.上海:上?？萍冀逃霭嫔?1993,第一,五章.[2]朱近康.擴(kuò)展頻譜通信及其應(yīng)用.合肥:中國(guó)科技大學(xué)出版社,1993.第四章.[3]Heidari-Bateni G, McGillem C D. A chaotic direct-sequence spread-spectrum communication system. IEEE Trans. on Commun., 1994, COM-42(2/3/4): 1524-1527.[4]Kohda T, Tsuneda A. Pseudonoise sequences by chaotic nonlinear maps and their correlation prop-[5]erties. IEICE Trans. on Commun., 1993, E76-B(8): 855-862.[6]Sakai H, Tokumaru H. Autocorrelations of a certain chaos. IEEE Trans. on ASSP, 1980, ASSP-28(5): 588-590.[7]Eckmann J P, Ruelle D. Ergodic theory of chaos and strange attractors[J].Rev. Mod. Phys.1985, 57(3):617-656[8]楊義先,林須端.編碼密碼學(xué).北京:人民郵電出版社,1992.第十五,十六章. -
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