Patent ID: 7667628
Filing Date: 2010-02-23
Classification: H03M

Abstract:
1. An interleaver for scrambling an information word, the information word comprising a multitude of digits, in order to achieve a permuted information word, comprising: a first interleaver stage for a row-by-row arranging of the digits of the information word in a plurality of first rows and first columns, the first rows comprising at least one first row comprising a gap and the first columns comprising at least one first column comprising a gap; and a second interleaver stage for scrambling the digits of the one first row comprising the gap by interchanging at least two digits of the one first row such that a position of the gap remains unchanged in order to achieve a first scrambled row, and for replacing the one of the first rows by the first scrambled row; wherein the first interleaver stage is configured for reading the first columns in a column-by-column manner and lining the digits of the first columns up without gaps in order to achieve the permuted information word.