Initial solution for the optimum design delay equalizers

A novel methodology for allocating the poles of a group delay equalizer is introduced, in order to be applied as the initial solution of an optimization procedure that searches for the optimum result. Any chosen cost function related to equalizer designs has several local minima, because of the large number of parameters and the high function complexity. The goal of the present paper is to avoid those local minima, and consequently improve the robustness and convergence rate of equalizer designs. The method is based on the allocation presented in Quelhas et al. (2004), introducing a new consistent approach to allocate the radii of the poles, and implementing a change in the choice for the phase of the poles, and also, a new decision criterion for both strategies presented in Quelhas. Simulation results are also presented.