Non-coherently demodulated signals are efficiently decoded using a non-complex system that is independent of the fading statistics of the channel. A symbol metric calculator (406) receives a signal-to-noise ratio (404) and symbols from a non-coherently demodulated signal (402) to efficiently produce...http://www.google.de/patents/US5450453?utm_source=gb-gplus-sharePatent US5450453 - Method, apparatus and system for decoding a non-coherently demodulated signal