Patent ID: 6311306
Filing Date: 2001-10-30
Classification: H03M,H04L

Abstract:
A method of interleaving information units in order to provide improved error control, the method comprising the steps of:receiving a plurality of information units;subdividing the plurality of information units into a plurality of subsets, wherein the information units subdivided into at least one of the plurality of subsets require a lower probability of bit-error than the information units subdivided into another of the plurality of subsets;reordering information units within each subset to produce a plurality of reordered subsets, wherein the plurality of reordered subsets comprises a first reordered subset and a second reordered subset;interlacing at least one information unit contained in the first reordered subset with at least one information unit contained in the second reordered subset to produce interleaved coded information units;wherein the step of subdividing comprises the steps of:coding the information units to produce a set of coded information units; andsubdividing the set of coded information units into a plurality of subsets;wherein the step of coding the information units comprises the steps of:coding the information units to produce an unpunctured set of coded information units; andpuncturing the unpunctured set of coded information units to produce a set of coded information units, wherein the at least one of the plurality of subsets that requires a lower probability of bit-error than the other of the plurality of subsets is punctured less than the other of the plurality of subsets.