1. A method comprising: acquiring an approximation of a feedforward filter in a Tomlinson-Harashima precoder scheme, the feedforward filter being approximated using autoregressive moving average modeling; and constructing a feedback filter to match the approximated feedforward filter, wherein constructing the feedback filter includes generating a target feedback filter from the approximation of the feedforward filter and conducting autoregressive moving average modeling of the target feedback filter to construct the feedback filter.