DIGITAL EQUALIZER IN WHICH TAP ADJUSTING SIGNALS ARE DERIVED BY MODIFYING THE SIGNAL CODE FORMAT

摘要

An all digital multitap transversal filter equalizer system is disclosed in which a received data signal is sampled at a predetermined rate. Each sample of the data signal is converted into a 10-bit serial digital word. The 10-bit word is multiplied by a second digital word successively at each tap to provide data for composite output data words. It has been found that by converting the composite output data word into one's complement format, error magnitude and error polarity signals can be derived for adaptive adjustment without additional equipment.