Combining linear equalization and self-organizing adaptation in dynamic discrete-signal detection
Teuvo Kohonen, Kimmo Raivio, Olli Simula, O. Venta, Jan Henriksson · 1990
An adaptive algorithm combining traditional linear equalization techniques and a self-organizing neural learning algorithm is presented. The results show that the performance of the neural equalizer is insensitive to nonlinear learning distortions in dynamic discrete-signal detection. Stabilization of the self-organizing map during undistorted transmission has to be further considered to decrease the absolute mean-square error (MSE) rate of the neural equalizer. The error is due to oscillations in the self-organizing map, mainly caused by the neighborhood learning. The oscillations can be decreased by taking more samples to the map before adapting themivalues and by decreasing the neighborhood learning parameter β