METHOD AND DEVICE FOR TRAINING AN ADAPTIVE EQUALIZER BY MEANS OF AN UNKNOWN DATA SIGNAL IN A TRANSMISSION SYSTEM USING DOUBLE SIDEBAND-QUADRATURE CARRIER MODULATION

摘要

METHOD AND DEVICE FOR TRAINING AN ADAPTIVEEQUALIZER BY MEANS OF AN UNKNOWN DATA SIGNALIN A TRANSMISSION SYSTEM USING DOUBLESIDEBAND-QUADRATURE CARRIER MODULATIONAbstractIn the receiver of a system using double sideband-quadrature carrier (DSB-QC) modulation, the equalizeris trained by adjusting its tap gains so as to minimizethe dispersion of order p,,where E is the mathematical expectation, zn is the equalizedsignal, and R is a positive real constant. To minimizethe dispersion D(1), the tap gains are adjusted as a func-tion of the distance between the point Zn representativeof Zn and a circle of radius R.