基于数据辅助的CPM信号调制参数估计

石明军; 邓名桂; 周世东; 雷俊; 姚彦

doi:10.3724/SP.J.1146.2009.00523

基于数据辅助的CPM信号调制参数估计

doi: 10.3724/SP.J.1146.2009.00523

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出版历程
- 收稿日期: 2009-04-10
- 修回日期: 2009-06-18
- 刊出日期: 2010-05-19

On the Data-Aided Estimation of Modulation Parameters of CPM

摘要

摘要: 针对非合作条件下实现CPM信号相干解调，首先要准确估计CPM信号调制参数这一关键问题，该文提出了一种基于数据辅助的CPM信号调制指数与成型脉冲联合估计的新方法，使用符号间的相位差分消除CPM信号相位的记忆特性，采用最小二乘法获得调制指数和成型脉冲的联合估计。理论分析与数值仿真表明该方法是无偏的，当数据观测长度为N 时，其估计误差以1/N的速率收敛到0。算法适用于全响应和部分响应CPM信号，具有良好的抗噪声性能。
- 连续相位调制(CPM); 参数估计; 调制指数; 成型脉冲
Abstract: In non-cooperative communication scenarios, coherent demodulation of Continuous Phase Modulation (CPM) signals requires precise estimation of CPM modulation parameters. A new data-aided modulation index and shaping pulse joint estimation algorithm is proposed for CPM signals. The differential phase between symbols is used to eliminate signal phase memories, and Least-Square method is used for parameters estimations. Theoretical analysis and numerical simulations show that it is unbiased. The estimating error is converged to zero at 1/N where N is the length of observation data. The algorithm is applicable to both full and partial response CPM modulations and presents good anti-noise performance.

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Brown C and Vigneron P J. Coarse and fine timing sychronisation for partial response CPM in a frequency hopped tactical network[C]. IEEEMILCOM, Orlando, FL, United States, 2007: 1-7.[2]Riba J and Vasquez G. Parameter estimation of binary CPM signals[C]. IEEEICASSP, Salt-Lake City, UT, 2001: 2561-2564.[3]Bianchi P, Loubaton P, and Sirven F. Non data-aided estimation of the modulation index of continuous phase modulations[J].IEEE Transactions on Signal Processing.2004, 52(10 Part1):2847-2861[4]Fonollosa J R and Fonollosd J A R. Estimation of the Modulation Index of CPM signals using higher-order statistics[C]. IEEEICASSP, Minneapolis, MN, USA, 1993, Vol.4: 268-271.[5]Proakis J G. Digital Communications[M]. 4th Edition, McGraw-Hill Companies, 2001: 185-192.[6]Liebetreu J. Joint carrier phase estimation and data detection algorithms for multi-h CPM data transmission[J].IEEE Transactions on Communications.1986, 34(9):873-881[7]乔植, 周春晖, 肖立民. 基于多符号差分相关的CPM 非相干解调算法[J]. 清华大学学报: (自然科学版), 2007, 47(4): 507-510.Qiao Zhi, Zhou Chun-hui, and Xiao Li-min. Non-coherent demodulation of continuous phase modulation signals based on multi-symbol differential correlation[J]. Journal of Tsinghua University (Science and Technology), 2007, 47(4): 507-510.[8]方继承, 贾哲, 于全. 指数函数分解法的 CPM 非相干序列估计[J]. 电子科技大学学报, 2008, 37(3): 358-360.Fang Ji-cheng, Jia Zhe, and Yu Quan. A NSE algorithm for CPM based on exponential functions decomposition[J]. Journal of University of Electronic Science and Technology of China, 2008, 37(3): 358-360.[9]孙锦华, 李建东, 金力军. 连续相位调制的非相干减少状态差分序列检测算法[J].电子与信息学报.2005, 27(8):1338-1341浏览Sun Jin-hua, Li Jian-dong, and Jin Li-jun. Noncoherent reduced states differential sequence detection of continous phase modulation[J].Journal of Electronics Information Technology.2005, 27(8):1338-1341[10]张旭东, 陆明泉. 离散随机信号处理[M]. 第1版, 北京: 清华大学出版社, 2005: 143-148.[11]Zhang Xu-dong and Lu Ming-quan. Discrete Random Signal Processing [M]. 1st Edition, Beijing, Tsinghua University Press, 2005: 143-148.

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