Patent ID: 6487261
Filing Date: 2002-11-26
Classification: H04L

Abstract:
A distortion compensating device provided in a receiver for compensating distortion added to a signal in a transmission path, said signal being generated in a multi-level modulator of a transmitter in which a digital signal is mapped to one of a plurality of specified signal points in a signal space diagram, said distortion compensation device comprising:distortion-compensated signal calculating means for producing a distortion-compensated signal S based on an equation S=Vâˆ’&agr;1Vâˆ’&agr;2V2 âˆ’&agr;3V3. . ., where V denotes a received signal, and &agr;n is a given factor; anddiscrimination means for discriminating the distortion-compensated signal S based on a threshold.