| 摘要: |
| 针对二进制相移健控(Binary Phase Shift Keying,BPSK)/正交相移键控(Quadrature Phase Shift Keying,QPSK)相位编码信号的调制识别问题，提出了一种基于广义帕雷托(General Pareto,GP)分布拟合优度检验的识别算法。基于极值分布理论，利用观测信号的平方幅度谱构建其超阈值序列，通过检验超阈值序列的分布是否近似服从GP-I分布来实现对BPSK/QPSK调制方式的分类识别。在不同条件下，大量仿真结果证明了所提算法的有效性，并且和已有的调制信号识别算法相比，所提算法具有更好的识别性能。 |
| 关键词: BPSK/QPSK信号 调制识别 极值理论 GP分布 修正频谱 |
| DOI： |
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| 基金项目:江苏省基础研究计划（自然科学基金）（BK20161104） |
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| Modulation identification of BPSK/QPSK signals based on goodness of fit-test of GP distribution |
| YANG Li,HU Guobing,HU Xuelong |
| (School of Electronic Information Engineering,Jinling Institute of Technology,Nanjing 211169,China;School of Information Engineering,Yangzhou University,Yangzhou 225127，China) |
| Abstract: |
| For the modulation recognition of binary phase shift keying(BPSK)/quadrature phase shift keying(QPSK) phase code signal,an identification algorithm based on the goodness of fit-test of general Pareto(GP) distribution is proposed.By using extreme value theory,an exceedance sequence is constructed from the spectrum obtained by squaring the observed signal,and the identification issue is solved by testing whether the distribution of the exceedance sequence approximately follows the GP-I distribution or not.Extensive simulations verify the effectiveness of the proposed algorithm under different conditions,and show that the performance of it is superior to that of existing algorithms. |
| Key words: BPSK/QPSK signal modulation identification extreme value theory GP distribution modified spectrum |
《电讯技术》编辑部 