Patent ID: 7616714
Filing Date: 2009-11-10
Classification: H04L

Abstract:
1. A device for predicting noise in a received signal, comprising: an autocorrelation function determination device that determines an autocorrelation function of the received signal; a noise predictor device that determines noise estimated values for the noise contained in the received signal from the autocorrelation function of the received signal by computing the noise estimated values from an autocorrelation function of the noise contained in the received signal, the autocorrelation function of the noise being determined by subtracting an autocorrelation function of a received wanted signal from the autocorrelation function of the received signal, the autocorrelation function of the received wanted signal being derived from received signal power of the received wanted signal; and an adaptive filter receiving the received signal and producing a prediction value for the received signal based on the received signal, wherein the adaptive filter has filter coefficients and adaptively adjusts the filter coefficients as a function of a prediction error of the adaptive filter, and the autocorrelation determination device derives the autocorrelation function of the received signal from the filter coefficients of the adaptive filter when the adaptive filter is in a stable state, wherein the autocorrelation function of the received wanted signal is determined as follows: where r wherein the received signal is a pulse amplitude-modulated signal and to determine the autocorrelation function of the received wanted signal, the received signal power P where M designates the number of stages of the pulse amplitude modulation.