In advanced TDMA mobile communications systems,

reduced-state equalization algorithms have to be employed

because high-level modulation is used in order

to improve spectral efficiency. Such equalizers have

only high performance, if the overall discrete-time

system to be equalized is minimum-phase. Therefore,

in general, a discrete-time prefilter has to be

inserted in front of equalization. In literature, several

approaches have been proposed for computation

of a suitable FIR or IIR prefilter. In this paper,

we present an approach for FIR prefilter computation,

which is quite robust and requires an only moderate

computational complexity. The prefilter consists

of the cascade of a channel-matched filter and

a prediction-error filter, which can be calculated via

the Levinson-Durbin algorithm. Simulation results

are given, which demonstrate that the performance

of the proposed approach is essentially equivalent to

the case of reduced-state equalization combined with

ideal allpass prefiltering.