Equaliser with weighted decision return includes direct and recursive filters providing reliability function to reduce errors

摘要

The filtering and calculation of weighted coefficients enables error transmission to be minimised by transmitting a reliability function. The equaliser with return of decisions comprises a direct filter (FF, 11) and a recursive filter (FB, 12) whose filtering coefficients are determined (13) in such a way as to optimise a predetermined quality factor. The equaliser receives the input data (x), supplying the direct filter (FF) and providing the equalised data (y') corresponding to the sum of the outputs of the direct filter (FF) and the recursive filter (FB). The recursive filter (FB) is supplied by the weighted data (y-recursif), whose value takes account of the equalised data (y) and corresponding reliability information.