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Kalman Filter Equalization for QPSK Communications

By: Lee, T.; Cunningham, D.;

1976 / IEEE


This item was taken from the IEEE Periodical ' Kalman Filter Equalization for QPSK Communications ' The discrete complex Kalman filter is considered as an equalizer for quadrature phase-shift keyed (QPSK) systems in the presence of additive noise and intersymbol interference (ISI). When the channel is unknown, an adaptive Kalman equalizer is used in which the channel complex tap gains are estimated by decision feedback.