Patent ID: 7003029
Filing Date: 2006-02-21
Classification: H04L

Abstract:
1. A method for equalizing and decoding data signals, which comprises the steps of: receiving a radio signal containing an error-protection-coded data signal transmitted over a radio channel, the data signal being error-protection coded at a transmitter end; sampling the radio signal received to generate a digital input data signal; feeding the digital input data signal to an adaptive equalizer having a first channel estimator which repeatedly determines first channel parameters of the radio channel, the adaptive equalizer uses the first channel parameters to calculate and output an equalized data signal; feeding the equalized data signal to a second channel estimator which repeatedly calculates, according to a method of moments, second channel parameters including a variance of radio channel noise and a damping factor of the radio channel, with both the variance of radio channel noise and the damping factor of the radio channel being calculated in dependence on statistical moments of the equalized data signal; feeding the second channel parameters to a decoder to be used as computing parameters in the decoding for calculating a decoded output signal; and decoding the equalized data signal in the decoder to determine the decoded output signal which is a reconstruction of an initial input signal on which the error-protection-coded data signal is based.