太赫兹科学与电子信息学报, 2018, 16 (3): 400, 网络出版: 2018-07-24  

一种 CPFSK信号调制指数估计方法

An algorithm of CPFSK modulation index estimation
作者单位
国网江西省电力有限公司经济技术研究院, 江西南昌 330043
摘要
随着通信技术与通信方式的快速发展, 通信信号调制方式与通信系统越来越复杂。复杂通信信号连续相位频移键控 (CPFSK)由于其频谱利用率高, 大量用于卫星通信等领域。针对复杂信号 CPFSK的参数估计问题, 提出一种基于李雅普诺夫指数的 CPFSK信号调制指数估计方法。通过 CPFSK信号李雅普诺夫指数与调制指数的数学关系模型, 提取李雅普诺夫指数估计信号调制指数。仿真验证了算法性能, 得到 CPFSK调制指数估计均方根误差随信噪比的变化曲线。此方法计算复杂度低且实现简单, 适用于 CPFSK信号与常规频移键控 (FSK)信号的调制指数估计。
Abstract
With rapid development of communication technology and the way of communication, the modulation type of communication signal and communication system become more and more complex. Due to the high spectrum utilization rate, Continuous-Phase Frequency Shift Keying(CPFSK) is widely used in satellite communication. Considering parameters estimation of CPFSK, an algorithm of CPFSK modulation index estimation is studied based on Lyapunov exponent. With the mathematical relationship between Lyapunov exponent and modulation index, modulation index is estimated by extracting Lyapunov exponent, and the performance is simulated by modulation index Root Mean Square Error(RMSE) vs. Signal-to-Noise Ratio(SNR) curves. With low complexity, this algorithm can be applied to CPFSK and common Frequency Shift Keying(FSK) signal.
参考文献

[1] FONOLLOSA J R,FONOLLOSA J A R. Estimation of the modulation index of CPM signals using higher-order statistics[C]// IEEE International Conference on Acoustics,Speech,and Signal Processing. Minneapolis,USA:IEEE, 1993:268-271.

[2] PAWAR S U,DOHERTY J F. Modulation recognition in continuous phase modulation using approximate entropy[J]. IEEE Transactions on Information Forensics & Security, 2011,6(3):843-852.

[3] REN C H,WEI P,XIAO X C. Symbol-rate estimation based on template matching rules[J]. Journal of Electronics, 2006, 23(5):769-772.

[4] LIU Y. A fast and accurate single frequency estimator synthetic approach[J]. Acta Electronica Sinica, 1999(27):126-128.

[5] PAWAR S U,DOHERTY J F. Modulation recognition in continuous phase modulation using approximate entropy[J]. IEEE Transactions on Information Forensics & Security, 2011,6(3):843-852.

[6] PAWAR S U,DOHERTY J F. Modulation recognition in continuous phase modulation using approximate entropy[J]. IEEE Transactions on Information Forensics & Security, 2011,6(3):843-852.

[7] 杨琳.数字通信信号调制方式自动识别技术研究[D].合肥:中国科学技术大学, 2008. (YANG Lin. Research on automatic modulation recognition technology of digital communication signal[D]. Hefei,Anhui,China:University of Science and Technology of China, 2008.)

[8] BOUTTE D,SANTHANAM B. ISI effects in a hybrid ICA-SVM modulation recognition algorithm[C]// 42nd Asilomar Conference on Signals,Systems & Computers. Pacific Grove,CA,USA:IEEE, 2008:457-460.

[9] TSU C P,CHANG D C. Modulation classification for M-ary CPM signals:based on PAM decomposition and phase detection methods[C]// 2011 Proceedings of 20th International Conference on Computer Communications and Networks. Maui,HI, USA:IEEE, 2011:1-5.

[10] MAMMONE R J,ROTHAKER R J,PODILCHUK C I. Estimation of carrier frequency modulation type and bit rate of an unknown modulated signal[C]// IEEE International Conference on Communications'87:Communications-Sound to Light Proceedings. NewYork:IEEE, 1987:1006-1012.

[11] 张辉,曹丽娜.现代通信原理与技术[M]. 3版.西安:西安电子科技大学出版社, 2013. (ZHANG Hui,CAO lina. Modern communication principle and technology[M]. 3rd ed. Xi’an,China:Xidian University, 2013.)

[12] PROAKIS J G.数字通信[M]. 北京:电子工业出版社, 2011. (PROAKIS J G. Digital communication[M]. Beijing:Electronic Industry Press, 2011.)

杜继萍, 吴组应, 黄桂林, 杨为群, 王敏, 郑检, 杨玎. 一种 CPFSK信号调制指数估计方法[J]. 太赫兹科学与电子信息学报, 2018, 16(3): 400. DU Jiping, WU Zuying, HUANG Guilin, YANG Weiqun, WANG Min, ZHENG Jian, YANG Ding. An algorithm of CPFSK modulation index estimation[J]. Journal of terahertz science and electronic information technology, 2018, 16(3): 400.

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