Patent ID: 6519282
Filing Date: 2003-02-11
Classification: H04L

Abstract:
A method for digital data transmission of information, having the steps of preceding digital signals on a transmitter side with a fixed precoder and recovering precoded digital signals on a receiver side by blind equalization, characterized in thatthe method comprises the step of subdividing the blind equalization into an equalization of the amplitude and a subsequent equalization of the phase, the equalization of the magnitude being performed with a prediction error filter configured as a finite impulse response (FIR) filter having a transfer function 1âˆ’F(z) to produce an approximately white signal, and the equalization of the phase being performed with a phase equalizing filter configured as a finite impulse response (FIR) filter, where the function F(z) represents a prediction filter; and the equalization of the magnitude is performed with a series connection of said prediction error filter and a coloring filter, said coloring filter being configured as an FIR filter and having a transfer function 1/(1âˆ’W(z)) and having fixed coefficient values, where the function 1/(1âˆ’W(z)) is the inverse of an ideal prediction error filter.