Patent ID: 6381727
Filing Date: 2002-04-30
Classification: H04L

Abstract:
A data receiver for receiving data including a series of multi-component signals representing symbols selected from a set of possible multi-component, multi-value symbols, each signal denoting values for more than two bits, said data receiver comprising:bit metric calculation means for calculating a bit metric for a particular bit i, the bit metric is calculated based on &Sgr;P(Sjâˆ©R), wherein P(Sjâˆ©R) represents the probability of transmission of symbol Sj and reception of received signal R, and &Sgr;P(Sjâˆ©R) represents the sum of the probabilities P(Sjâˆ©R) of all symbols Sj in which the particular bit has a given value, the given value being 0 or 1.