An interference channel equalizer for receiving and processing at least two distinct RF data signals transmitted over the same frequency to a single receiving station that has at least one receiver for each distinct transmitted RF data signal. The main semiconductor region is configured to provide the desired semiconductor devices. They have a height perpendicular to the surface of less than 50 \u03bcm and a surface profile along the reference direction which includes a central section, two transition sections adjacent the central section and two end sections adjacent the transition sections. Where the position of suspected failed symbols 206 is known from this erasure information, the ability of a decoder 22 to perform ECC decoding is substantially enhanced.