一种减小DCSK估计方差的新方法

ITSC 2001. 2001 IEEE Intelligent Transportation Systems. Proceedings (Cat. No.01TH8585) Pub Date : 2001-08-25 DOI:10.1109/ITSC.2001.948823

Liu Hu, Z. Jing, L. Bo, Wu Ri Chun, Zhang Li Ping

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引用次数: 0

摘要

本文分析了采用降噪模块实现的DCSK(差分混沌移位键控)通信系统中产生估计方差的因素。该系统有三个主要因素:DCSK信号本身、加性信道噪声和降噪模块。为了避免DCSK信号的方差和加性信道噪声引起的信号衰减，提出了一种新的混沌多相序列(CPS) DCSK方案。仿真结果表明，对于降噪方案的估计方差，该降噪方案的噪声性能比调频(FM)降噪方案略有下降。然而，这种设计可以很容易地实现。

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Novel method to reduce the estimation variance of DCSK

In this paper, we analyze the factors which cause the estimation variance in a DCSK (differential chaos shift keying) telecommunication system implemented with a noise reduction module. There are three main factors in this system: the DCSK signal itself, the additive channel noise and the noise reduction module. To avoid the variance in the DCSK signal and the signal reduction that is caused by additive channel noise, a novel DCSK scheme with a chaotic polyphase sequence (CPS) is presented. Simulation results show that the noise performance of this novel DCSK slightly degrades in contrast with frequency-modulated (FM) DCSK for the estimation variance of the noise reduction scheme. However, this design can be implemented easily.

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来源期刊

ITSC 2001. 2001 IEEE Intelligent Transportation Systems. Proceedings (Cat. No.01TH8585)

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