<?xml version="1.0"?>
<!--
###################################################
# FEC LDPC MATRIX OBJECT
###################################################
 -->

<block>
  <name>LDPC Generator Matrix</name>
  <key>variable_ldpc_G_matrix_def</key>
  <import>from gnuradio import fec</import>
  <var_make>self.$(id) = $(id) = fec.ldpc_G_matrix($filename)</var_make>

  <make></make>

  <param>
    <name>Ignore Me</name>
    <key>value</key>
    <value>"ok"</value>
    <type>raw</type>
    <hide>all</hide>
  </param>

  <param>
    <name>File</name>
    <key>filename</key>
    <value></value>
    <type>file_open</type>
  </param>

  <doc>
This block creates a LDPC Generator Matrix variable.

This variable can be used by:
  1) LDPC Encoder Definition (via Generator) block
  2) LDPC Bit Flip Decoder Definition block

Provide an alist file, which contains a Generator matrix, G, in the standard format G = [I P], where I is an identity matrix and P is the parity submatrix.

The format of alist files is described at:
http://www.inference.phy.cam.ac.uk/mackay/codes/alist.html
  </doc>
</block>
