廣義映射混沌擴(kuò)頻序列及其特性分析
The Chaotic Spreading Sequences Generated by the Extended Chaotic Map and Its Performance Analysis
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摘要: 該文從擴(kuò)頻通信對(duì)擴(kuò)頻碼序列的要求出發(fā)，提出采用廣義映射產(chǎn)生混沌數(shù)字序列的思路。通過對(duì)廣義映射混沌數(shù)字序列相關(guān)性和平衡性的分析，給出一種改進(jìn)的廣義映射混沌數(shù)字序列生成方法。計(jì)算機(jī)模擬分析表明，使用該文方法生成的混沌序列具有良好的平衡性和保密性，更適合在碼分多址通信中應(yīng)用。
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關(guān)鍵詞:
- 擴(kuò)頻通信;廣義映射; 擴(kuò)頻序列; 相關(guān)性;平衡性
Abstract: In view of the performance of the spreading sequences for spread-spectrum communication system, a novel method of obtaining chaotic digital sequences based on the extended chaotic map is given in this paper. The correlation and balance performances of the new sequences are analysed, furthermore, an advanced method of generating the digital sequences is proposed, in order to get excellent balance performance. The simulation results show that the chaotic spreading sequences generated by the advanced method possess excellent performance and security, specially for CDMA communication system. -
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