Layers of padding materials or cushions formed from an elastic foam matrix structurally supporting and encapsulated gel elements are disclosed. The proposed structure achieves better bit error rate performance than the conventional matched receiver when operating in multiple access interference. Granularity of protection and check incheck out on family, spread, presentation layer and presentation object. The secondary signal path produces distortion of a magnitude corresponding to the magnitude of, but at an opposite phase to, the distortion generated by the non-linear amplifier.