Stochino Feed Forward Amplifier – Wireless World 1994

This article decribes a feed forward amplifier concept from Giovanni Stochino.  The design, while novel, is very complicated and delivers about 30 dB in distortion reduction. Stochino Feed Forward.pdf 

For an altogether simpler alternative that acheives about 20 dB distortion reduction, take a look at AFEC (‘augmented feedback error correction’) elswhere on this site.