多址差分混沌移位键控系统的改进方案

2008 4th IEEE International Conference on Circuits and Systems for Communications Pub Date : 2008-05-26 DOI:10.1109/ICCSC.2008.83

Ying Shi, Yiping Chen, Yigang Zhou, Y. Liu

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引用次数: 3

摘要

本文在基于时延的差分混沌移位键控(DCSK)多址技术的基础上，提出并分析了一种改进的多址方案。采用不同初始值的零均值Logistic混沌映射生成所有用户的混沌信号，且用户的平均数据速率相同。在AGWN信道模型和多径瑞利衰落信道模型下，对不同用户数、扩频因子和比特能噪功率谱密度比下的误码率进行了数值推导。最后，通过计算机仿真对结果进行了验证。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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An Improved Scheme for Multiple Access Differential Chaos-Shift Keying System

In this paper, a modified multiple-access scheme is proposed and analyzed on the base of the time-delay-based multiple-access technique using differential chaos shift keying (DCSK). Zero-mean Logistic chaos map with different initial values is used to generate the chaotic signals for all users and the average data rates for the users are identical. Bit error rates are derived numerically for different number of users, spreading factor, and the bit-energy-to -noise-power-spectral-density ratio under AGWN channel model or multipath Rayleigh fading channel model. Finally, computer simulations are performed to verify the results.

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2008 4th IEEE International Conference on Circuits and Systems for Communications

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