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基于记忆因子的连续相位调制信号最大似然调制识别

吴斌 袁亚博 汪勃

吴斌, 袁亚博, 汪勃. 基于记忆因子的连续相位调制信号最大似然调制识别[J]. 电子与信息学报, 2016, 38(10): 2546-2552. doi: 10.11999/JEIT151445
引用本文: 吴斌, 袁亚博, 汪勃. 基于记忆因子的连续相位调制信号最大似然调制识别[J]. 电子与信息学报, 2016, 38(10): 2546-2552. doi: 10.11999/JEIT151445
WU Bin, YUAN Yabo, WANG Bo. Maximum Likelihood Modulation Recognition for Continuous Phase Modulation Signals Using Memory Factor[J]. Journal of Electronics and Information Technology, 2016, 38(10): 2546-2552. doi: 10.11999/JEIT151445
Citation: WU Bin, YUAN Yabo, WANG Bo. Maximum Likelihood Modulation Recognition for Continuous Phase Modulation Signals Using Memory Factor[J]. Journal of Electronics and Information Technology, 2016, 38(10): 2546-2552. doi: 10.11999/JEIT151445

基于记忆因子的连续相位调制信号最大似然调制识别

doi: 10.11999/JEIT151445

Maximum Likelihood Modulation Recognition for Continuous Phase Modulation Signals Using Memory Factor

  • 摘要: 为解决有记忆非线性的连续相位调制(CPM)信号调制方式识别精度低的问题,该文提出一种基于记忆因子的CPM信号最大似然调制识别新方法。该方法定义具有时齐马尔科夫性的映射符号,通过计算其后验概率构造记忆因子,进一步结合CPM分解和EM算法,推导出时间可分离,信道参数可估计的CPM信号似然函数。该调制识别方法所需符号数目少,适用信噪比范围广,识别CPM信号种类多且精度高,对相位误差鲁棒性强。仿真结果证明,当符号数目为200,信噪比为0 dB,相位误差任意时,该方法对8种CPM信号的识别率可达95%以上。
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出版历程
  • 收稿日期:  2015-12-17
  • 修回日期:  2016-05-10
  • 刊出日期:  2016-10-19

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