Pairwise Recognition of Digital Modulation Modes Using Optimized Circular Harmonic Functions

Conference: European Wireless 2015 - 21th European Wireless Conference
05/20/2015 - 05/22/2015 at Budapest, Hungary

Proceedings: European Wireless 2015

Pages: 6Language: englishTyp: PDF

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Osipov, Andrey V. (Research Institute of Radio Engineering and Telecommunications, Saint-Petersburg Electrotechnical University “LETI”, Saint Petersburg, Russia)
Sergienko, Alexander B. (Department of Theoretical Fundamentals of Radio Engineering, Saint-Petersburg Electrotechnical University “LETI”, Saint Petersburg, Russia)

New computationally efficient algorithm is proposed for pairwise recognition of linear digital modulation constellations. Decision rule is based on circular harmonic function with only two terms: angle-independent term and one circular harmonic, the number of harmonic being defined by rotational symmetry of both constellations. Optimization procedure for calculation of weighting functions is presented. Computer simulations confirmed applicability of the proposed method for distinguishing between pairs of QAM constellations. It is also shown that the proposed method can be used to recognize a modulation format from a set of more than two constellations through a series of pairwise decisions.