| 基于混沌扩频序列的超宽带通信系统多址性能 |
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| 引用本文： | 薛龙,万冬东,蒋国平.基于混沌扩频序列的超宽带通信系统多址性能[J].东南大学学报(自然科学版),2005(Z2). |
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| 作者姓名： | 薛龙 万冬东 蒋国平 |
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| 作者单位： | 南京邮电大学电子工程系 南京210003 |
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| 基金项目： | 江苏省高等学校青蓝工程计划资助项目(JS200407)，江苏省高等学校自然科学基金重点资助项目(04KJA517092) |
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| 摘 要： | 依据混沌序列的白噪声统计特性,较理想的自相关和互相关特性,且产生简单、码元丰富、抗干扰能力强等特性,极其适合作为扩频序列,提出了基于混沌扩频序列的UWB通信系统方案,对多址干扰和白噪声干扰进行了分析,得出了它的误码率公式.采用了改进型Logistic映射迭代形成的数字混沌序列作为扩频序列,在系统内用户数不同的条件下,分别进行了4组仿真实验,误码率的仿真结果和理论值一致,证明了理论分析的正确性,表明了系统强抗干扰能力.
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| 关 键 词： | 超宽带 直扩 混沌 |
Performance of UWB multiple-access communication system based on chaotic spread spectrum sequences |
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| Xue Long Wan Dongdong Jiang Guoping.Performance of UWB multiple-access communication system based on chaotic spread spectrum sequences[J].Journal of Southeast University(Natural Science Edition),2005(Z2). |
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| Authors: | Xue Long Wan Dongdong Jiang Guoping |
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| Abstract: | Because chaotic sequences have the properties of good correlation,simple generation and rich code elements and they meet the demand of spread-spectrum sequence,good capability of anti-jamming,multiple-access communications system based on chaotic spread spectrum sequences is presented.The performance of multiple-access interference and white noise interference is analyzed and a novel analytic formula for calculating bit-error-rate is obtained.We do four experiments in the system with different users on the basis that the chaotic sequences are created by iteration methods based on advanced Logistic-map.The results verified by measurements through simulation system are similar to the theoretical analysis is prove that the theory results are precise,indicating that the capability of anti-jamming is good. |
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| Keywords: | ultra-wideband direct sequence spread spectrum chaos |
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