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Innovative Robust Modulation Classification Using Graph-Based Cyclic-Spectrum Analysis
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DOI：10.1109/LCOMM.2016.2618868.png)
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摘要
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A novel automatic modulation classification method based on the graph presentation of the cyclic spectrum is proposed. In our proposed scheme, the periodicity and the symmetry of the cyclic spectrum will be exploited to establish a concise feature representation of multiple graphs. The modulated signal is first transformed from the cycle-frequency domain into the graph domain. Consequently, the concise graph-presentation, namely, a set of weighted directed rings, will be formulated as the robust features of the original signal. Those features can be easily expressed by the corresponding adjacency matrices. It can be verified that the adjacency matrices are sparse and the non-zero entries therein can be registered as the efficient feature parameters. Through the Hamming distance measure to enumerate the difference between the feature parameters resulting from the training data and the test data, one can perform the modulation classification. Monte Carlo simulation results demonstrate that our proposed method can achieve much better classification accuracy than the existing technique when the cyclic spectrum is used.
Keyword:
Modulation classification
cyclic spectrum
graph presentation for signal waveforms
adjacency matrix
Hamming distance
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期刊
IF:
4.4
论文数:
1.3W
被引数:
2.2W
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