| 相干DCSK混沌通信系统的多用户噪声性能 |
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| 引用本文： | 王光义,丘水生,马在光. 相干DCSK混沌通信系统的多用户噪声性能[J]. 华南理工大学学报(自然科学版), 2003, 31(12): 1-4 |
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| 作者姓名： | 王光义 丘水生 马在光 |
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| 作者单位： | 华南理工大学,电子与信息学院,广东,广州,510640;华南理工大学,电子与信息学院,广东,广州,510640;华南理工大学,电子与信息学院,广东,广州,510640 |
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| 基金项目： | 国家自然科学基金资助项目 (6 96 72 0 2 2 ),教育部高校博士点学科基金资助项目 (0 0 0 5 6 1 0 7),广州市科技发展项目资助 |
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| 摘 要： | 为了定量描述混沌数字通信系统的多用户噪声性能,基于离散时间混沌序列,提出了相干DCSK(Differential Chaos Snift Keying)系统在多用户噪声环境下误码性能的一种近似分析方法,获得了多用户、单用户误码性能及其理论上界的表达式,理论计算与计算机仿真结果一致．结果表明,随着用户的增加其误码率显著下降,且存在一个较大的性能下界．提高多用户误码性能的途径是产生正交的混沌信号集．
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| 关 键 词： | 相干DCSK 通信系统 多用户 误码性能 |
| 文章编号： | 1000-565X(2003)12-0001-04 |
| 修稿时间： | 2003-06-25 |
Noisy Multiuser Performance of Coherent DCSK Chaos Communication Systems |
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| Wang Guang yi Qiu Shui sheng Ma Zai guang. Noisy Multiuser Performance of Coherent DCSK Chaos Communication Systems[J]. Journal of South China University of Technology(Natural Science Edition), 2003, 31(12): 1-4 |
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| Authors: | Wang Guang yi Qiu Shui sheng Ma Zai guang |
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| Abstract: | In order to give a quantitative description of the noisy multiuser performance of digital communications using chaos, a new approach is proposed to analyze the noisy multiuser performance of a coherent DCSK system in this paper, based on discrete time chaotic sequences. The expressions of error performance and its upper bound for multiuser and single user are given theoretically and verified by the simulation results. Theoretical and simulation results show that the noise performance is reduced rapidly by increasing the number of the multi user, and that there is a bound for noisy multiuser performance of coherent DCSK. The approach to increasing the performance is to produce a set of orthogonal chaotic signals. |
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| Keywords: | coherent DCSK communication system multiuser error performance |
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