Patent ID: 6085351
Filing Date: 2000-07-04
Classification: H04L

Abstract:
A method of synchronizing a receiver in a coded data transmission by means of an M-stage channel symbol alphabet, said method comprising the steps of:a) dividing the channel symbol alphabet into a number of K not necessarily equal-sized groups (I,II) with K greater than one, so that at least one of said groups contains less than M channel symbols; andb) either making preliminary or final data decisions in a data decoder, then making group membership decisions based on said preliminary or final data decisions and continuously using the group membership decisions for selecting a parameter detector (1, 2, . . . , K) or a parameter detector characteristic curve corresponding to an applicable one of said groups according to said group membership decisions; ormaking a group membership decision based on redundancies of received channel symbols present in said coded data transmission and then using the group membership decision for continuously selecting the parameter detector or the parameter detector characteristic curve according to the group membership decision; ordetermining a probability for group membership in at least one of said groups based on the redundancies of the received channel symbols present in the coded data transmission and then using said probability for selecting weighting factors for output signals of the parameter detector corresponding to the concerned one of the groups.