Abstract
Abstract Combined blind decision feedback equalization and blind carrier phase tracking for digital communication links with nonminimum phase channels is examined. An algorithm that employs decision feedback prediction to equalize the amplitude information of the channel and adaptive fourth-order cumulant methods to equalize the phase information of the channel is proposed. It is shown that the proposed method opens the eye pattern of 64-QAM and 256-QAM signal constellations faster than existing decision feedback equalization algorithms that employ explicitly fourth-order cumulants and exhibit similar computational complexity.
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