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| On the Data-Aided Estimation of Modulation Parameters of CPM |
| Shi Ming-jun; Deng Ming-gui; Zhou Shi-dong; Lei Jun; Yao Yan |
| Department of Electronic Engineering, Tsinghua University, Beijing 100084, China |
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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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Received: 10 April 2009
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Corresponding Authors:
Shi Ming-jun
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2010, Vol. 32 
