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Adaptive Solution for Blind Equalization and Carrier-Phase Recovery of Square-QAM

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2 Author(s)
Shafayat Abrar ; Department of Electrical Engineering and Electronics, University of Liverpool, Liverpool, UK ; Asoke Kumar Nandi

In this letter, we adaptively optimize the equalizer output energy to obtain a joint blind equalization and carrier-phase recovery solution. The resulting (multimodulus) update algorithm possesses a particular zero-memory Bussgang-type nonlinearity. We provide evidence of good performance, in comparison to existing adaptive methods, like RCA, MMA and CMA, through computer simulations for higher-order quadrature amplitude modulation signalling on symbol- and fractionally-spaced channels.

Published in:

IEEE Signal Processing Letters  (Volume:17 ,  Issue: 9 )