Self-organizing maps for rapidly fading nonlinear channel equalization

Proposes a self-organizing map (SOM) approach to equalize time-varying nonlinear channels. The approach is applied to a satellite mobile communication (S-UMTS) channel composed of time invariant linear filters, a nonlinear memoryless amplifier and a time-varying multipath propagation channel. Multipath fading is represented by a periodic time-varying linear filter. The paper gives several simulation results in order to show the performance and convergence behavior of the SOM. The paper illustrates also the capability of the SOM to track the channel changes.