Adaptive decision feedback equalization for communication systems

摘要

A digital communication system and corresponding feedback equalization method are described for use in reducing multi-path distortions, such distortions being diminished by employment of an adaptive conjugate gradient algorithm wherein weight coefficients of feed-forward and feedback filter taps are updated recursively during transmission of each data symbol. Weight coefficients are updated based on converging transmission error values, the weight coefficients being updated until either a predetermined number of updates are made, or until the current transmission error value is less than or equal to a predetermined percentage of the initial transmission error value for the given symbol. <IMAGE>