Fully convergent joint blind equalization/phase recovery scheme for data communication systems

Abstract

Presents a new adaptive algorithm for joint blind equalization and phase recovery in data communication systems. This algorithm is mainly based on the standard decision directed algorithm (DDA) but the incorporation of both a linear constraint in the filter coefficients and an adjustable complex parameter in the decision device, provide an unimodal error surface. This attractive performance is analyzed theoretically when faced with minimum phase channels. For the more realistic situation of non minimum phase channels exhaustive simulations show that a similar behavior can be expected.