首页期刊简介编委会投稿启事审稿流程读者订阅广告服务联系我们English
引用本文
  •    [点击复制]
  •    [点击复制]
【打印本页】 【下载PDF全文】 查看/发表评论下载PDF阅读器关闭

←前一篇|后一篇→

过刊浏览    高级检索

本文已被:浏览 43次   下载 0 本文二维码信息
码上扫一扫!
基于GP分布拟合检验的BPSK/QPSK信号调制识别
杨莉,胡国兵,胡学龙
0
(金陵科技学院 电子信息工程学院,南京 211169;扬州大学 信息工程学院,江苏 扬州 225127)
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:
基金项目:江苏省基础研究计划(自然科学基金)(BK20161104)
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
安全联盟站长平台