Xilinx Blocks
Block Parameters Dialog Box
The Xilinx depuncture block can be configured using its Block Parameters dialog box.
Figure
Parameters specific to the Xilinx Puncture block are:
∙Depuncture Code: specifies the depuncture pattern for inserting the string to the input.
∙Insert Symbol: specifies the binary word to be inserted in the depuncture code.
Other parameters used by this block are described in the Common Parameters section of the previous chapter.
The Depuncture block does not use a Xilinx LogiCORE.
Interleaver Deinterleaver
The Xilinx Interleaver/Deinterleaver block implements an interleaver or a deinterleaver. An interleaver is a device that rearranges the ordering of a sequence of symbols in a
When the block is in interleaver mode, the input data sampled on the din port shall be multiplexed into and out of B shift registers onto the dout port using two (synchronized) commutator arms,
as illustrated in the figure below. B is the number of branches as entered in the block’s parameters dialog. Branch 0 shall have a shift register of zero length. Branch 1 shall have a shift register of length L. Branch 2 shall have a shift register of length 2L. Branch
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