Patent ID: 6393075
Filing Date: 2002-05-21
Classification: H03M

Abstract:
A method of processing data received by a receiver, which comprises:receiving data transmitted in successive frames, each containing a predefined number of bit positions, via a transmission link; processing the received data with a maximum a posteriori probability algorithm using one of metric increments and a maximum likelihood algorithm; calculating the metric increments for at least one bit position, whose value and/or whose reliability value is correlated from frame to frame, in dependence from a current reliability value determined for the frame being currently processed, whereby the current reliability value is a measure of a probability that the value of the bit position has a predefined value; determining the current reliability value by using at least one observed reliability value determined for the bit position from a previously processed frame or from the frame being currently processed; and determining the current reliability value such that a sum formed over several frames of the deviations of an error-free reliability value for the respective frame and of the reliability value determined for the same frame assumes a minimum.