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This paper faces the problem of the automatic classification of the stresses affecting the quadrature amplitude modulation. This problem arises when a continuous monitoring system is needed for improving the quality of service in communication networks based on such a modulation scheme. In particular, a measurement method based on image processing is proposed. It automatically analyzes the constellation diagram and selects the stress actually present through a template matching technique. The results of the first simulations, carried out on signals affected by different stresses and SNRs, are presented and discussed. Some experimental results are also shown.
Instrumentation and Measurement, IEEE Transactions on (Volume:52 , Issue: 4 )
Date of Publication: Aug. 2003