Adaptive canceler-equalizer for digital communication channels

As mobile computing increases in popularity, intersymbol interference caused by Doppler spread or multipath propagation becomes more significant as one of the fundamental performance limitations of wireless communications. To mitigate ISI problems, many algorithms and structures have been suggested over the last three decades. In this paper, we analyze a new method called the adaptive canceler-equalizer. The ACE performs cancellation first to reduce noise enhancement, and then equalizes the residue signal. The performance of the ACE is shown to be better than either linear equalizers or decision-feedback equalizers in severe channel environments