吉林大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (3): 973-978.doi: 10.13229/j.cnki.jdxbgxb201503042

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非数据辅助的多指数连续相位调制信号的载波频率估计算法

杨春1, 钟声1, 谢滔2, 谢顺钦1, 张健1, 郄志鹏2   

  1. 1.中国工程物理研究院 电子工程研究所,四川 绵阳 621900;
    2.国防科学技术大学 电子科学与工程学院,长沙 410073
  • 收稿日期:2013-10-10 出版日期:2015-05-01 发布日期:2015-05-01
  • 通讯作者: 钟声(1981-),男,博士,助理研究员.研究方向:Multi-h CPM技术等.E-mail:zhongsheng0621@163.com
  • 作者简介:杨春(1972-),男,研究员,硕士生导师.研究方向:遥测遥控及软件无线电技术.
  • 基金资助:
    国家自然科学基金项目(10876103)

Non-data aided carrier frequency estimation algorithm for multi-h CPM

YANG Chun1, ZHONG Sheng1, XIE Tao2, XIE Shun-qin1, ZHANG Jian1, QIE Zhi-peng2   

  1. 1.Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang 621900,China;
    2.College of Electronic Science and Engineering,National University of Defense Technology, Changsha 410073,China
  • Received:2013-10-10 Online:2015-05-01 Published:2015-05-01

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摘要： 针对多指数连续相位调制(Multi-h CPM)信号的载波频率估计困难且算法复杂的问题,将仅仅适用于单指数CPM信号的载波频率估计算法进行改进,提出了一种适用于Multi-h CPM信号的非数据辅助的载波频率估计算法。基于最大似然准则获得Multi-h CPM信号载波频率的估计,为了有效地界定文中算法性能,最后推导了Multi-h CPM信号的载波频率估计算法的修正Cramer-Rao限。仿真结果表明:该算法适用于全响应和部分响应的Multi-h CPM信号,其载波频率估计的性能良好且对符号定时偏差和调制指数同步偏差不敏感。

关键词: 通信技术, 多指数连续相位调制, 非数据辅助, 载波频率恢复, 最大似然准则, 修正Cramer-Rao限

Abstract: To solve the difficulty and complexity of carrier frequency estimation of multi-h Continuous Phase Modulation (CPM), a non-data aided carrier frequency estimation algorithm for multi-h CPM was proposed. This algorithm is based on existing carrier frequency estimation algorithm only for single-h CPM. The carrier frequency estimation was obtained using the maximum likelihood principles. Then, a modified Cramer-Rao bound for multi-h CPM was deduced for evaluating the performance. Simulation results show that the proposed algorithm is suitable for full response and partial response multi-h CPM; it has good performance in carrier frequency estimation and is not sensitive to the timing offset and modulation index offset.

Key words: communication, multi-h CPM, non-data aided, carrier frequency recovery, maximum likelihood principles, modified Cramer-Rao bound

中图分类号: 

  • TN927
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