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伪混沌跳时超宽带信号的功率谱密度分析

Power spectrum analysis for PCTH UWB signals
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摘要 依据PCTH-UWB信号的功率谱密度问题和在多址技术中的扩展性问题,提出了基于不同调制方式下新颖的PCTH UWB发射机模型。该模型在混沌脉冲位置调制方式下,引入脉冲幅度调制原理,得到了脉冲幅度调制方案及联合调制方案。并且给出了不同方式下的PCTH信号功率谱密度理论分析结果和仿真结果。结果表明,联合调制方案能够具有更好的平坦频谱,在一定程度上解决了与其他无线系统共存性问题。 According to the problems of power spectral density and multiple access expansibility in PCTH UWB signals, the scheme for PCTH-UWB transmitters by utilizing different modulation methods is proposed. Considering the conventional CPPM modulation, the PAM-PCTH and PAM-PPM-PCTH are given out by introducing the principle of PAM. The theoretical and simulation results of the power spectral density（PSD） analysis based on the different modulations are presented. The simulation results show that the PAM-PPM scheme can provide with smoother power spectrum, and resolve the coexistence problem with other wireless systems on a certain extent.
作者 李鸿儒 何迪
机构地区 北京华龙通科技有限公司 上海交通大学电信学院信息技术与电气工程研究院
出处 《信息技术》 2014年第12期20-24,共5页 Information Technology
基金 国家高技术研究发展计划(863计划)课题项目资助(2013AA013602)
关键词 超宽带 混沌映射 伪混沌跳时 功率谱 UWB chaotic map PCTH power spectral
分类号 TN911.3 [电子电信—通信与信息系统]
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参考文献9

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二级参考文献5

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信息技术
2014年 第12期

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