A Generalization of the Enhanced Decision Adjusted Modulus Algorithm for Blind Equalization of Constellations with Closely Positioned Circles

2020 IEEE Microwave Theory and Techniques in Wireless Communications (MTTW 2020) 2020
Deniss Kolosovs

The work is devoted to the problems of blind equalization in quadrature amplitude modulation systems. The disadvantages of typically used algorithms, such as the constant modulus algorithm (CMA) or decision-directed algorithms, are reviewed. A new approach to blind equalization is proposed in the paper. It is based on a combination of the CMA and enhanced decision adjusted modulus algorithm elements and mitigates the drawbacks of both algorithms. The algorithm uses optimally calculated detection thresholds to make a decision. The optimization criterion is the minimum probability of the equalizer weights misadjustment. The algorithm has shown high efficiency for modulations with closely positioned circles in the constellation.

Atslēgas vārdi
blind equalizers | cost function | data communication | estimation | modulation | probability density function
DOI
10.1109/MTTW51045.2020.9244924
Hipersaite
https://ieeexplore.ieee.org/document/9244924

Kolosovs, D. A Generalization of the Enhanced Decision Adjusted Modulus Algorithm for Blind Equalization of Constellations with Closely Positioned Circles. No: 2020 IEEE Microwave Theory and Techniques in Wireless Communications (MTTW 2020), Latvija, Riga, 1.-1. oktobris, 2020. Piscataway: IEEE, 2020, 195.-200.lpp. ISBN 978-1-7281-9399-1. e-ISBN 978-1-7281-9398-4. Pieejams: doi:10.1109/MTTW51045.2020.9244924

Publikācijas valoda
English (en)