多通道混沌调制模拟-信息转换

发布时间：2019-03-10 17:50

【摘要】：为了降低混沌调制中采样通道的采样速率,该文提出一种多通道混沌调制模拟-信息转换结构。该结构通过采样参数调制混沌系统的多个状态输出作为压缩测量,可实现在总采样速率不变的情况下降低每个采样通道的采样速率。与混沌调制相比,多通道混沌调制增加了低速采样单元的个数,但显著提高了高稀疏度信号的重构性能。基于混沌脉冲同步理论,该文给出了多通道混沌调制结构的信号可重构条件与被采样状态变量选择方法。以Lorenz系统为例,仿真验证了多通道混沌调制结构的有效性。
[Abstract]:In order to reduce the sampling rate of sampling channels in chaotic modulation, a multi-channel chaotic modulation analog-information conversion structure is proposed in this paper. By modulating several state outputs of chaotic system with sampling parameters as compression measurements, the sampling rate of each sampling channel can be reduced without changing the total sampling rate. Compared with chaotic modulation, multi-channel chaotic modulation increases the number of low-speed sampling cells, but significantly improves the reconstruction performance of high sparse signal. Based on the theory of chaotic pulse synchronization, the condition of signal reconfiguration and the selection method of sampled state variables for multi-channel chaotic modulation structure are presented in this paper. Taking the Lorenz system as an example, the effectiveness of the multi-channel chaotic modulation structure is verified by simulation.
【作者单位】：南京理工大学电子工程系;
【基金】：国家自然科学基金(60971090,61101193)资助课题
【分类号】：TN911.3

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