Apparatus and method for generating interleaver index
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United States of America Patent
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May 17, 2016
Grant Date -
Jan 22, 2015
app pub date -
Feb 24, 2012
filing date -
Feb 2, 2012
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Abstract
An apparatus for generating indexes of an interleaver for input data comprises: a main processor for calculating an index for a predetermined bit of the input data; and an index operator for receiving the index calculated by the main processor, calculating in parallel indexes for bits after the predetermined bit, and deriving a plurality of indexes. The main processor calculates the index for ith to (i+15)th bits of the input data where i is an integer equal to or larger than 0, and transfers a result of (128*f2)modK to the index operator. The index operator calculates an index for an (i+j+16)th bit where j is an integer which satisfies 0≦j≦7 by using an equation of Π(i+j+16)=(2*Π(i+j+8)−Π(i+j)+128*f2)modK where K is a size of the input data and f2 is a coefficient calculated from K.
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