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Diffstat (limited to 'gr-fec/grc/variable_ldpc_H_matrix_object.xml')
| -rw-r--r-- | gr-fec/grc/variable_ldpc_H_matrix_object.xml | 55 |
1 files changed, 0 insertions, 55 deletions
diff --git a/gr-fec/grc/variable_ldpc_H_matrix_object.xml b/gr-fec/grc/variable_ldpc_H_matrix_object.xml deleted file mode 100644 index 1bfb6be060..0000000000 --- a/gr-fec/grc/variable_ldpc_H_matrix_object.xml +++ /dev/null @@ -1,55 +0,0 @@ -<?xml version="1.0"?> -<!-- -################################################### -# FEC LDPC PARITY CHECK MATRIX OBJECT -################################################### - --> -<block> - <name>LDPC Parity Check Matrix</name> - <key>variable_ldpc_H_matrix_def</key> - <import>from gnuradio import fec</import> - <var_make>self.$(id) = $(id) = fec.ldpc_H_matrix($filename, $gap)</var_make> - - <make></make> - - <param> - <name>Ignore Me</name> - <key>value</key> - <value>"ok"</value> - <type>raw</type> - <hide>all</hide> - </param> - - <param> - <name>File</name> - <key>filename</key> - <value></value> - <type>file_open</type> - </param> - - <param> - <name>Gap</name> - <key>gap</key> - <value></value> - <type>int</type> - </param> - - <doc> -This block creates a FEC LDPC Parity Check Matrix variable. - -This variable can be used by: - 1) LDPC Encoder Definition (via Parity Check) block - 2) LDPC Bit Flip Decoder Definition block - -The format of alist files is described at: -http://www.inference.phy.cam.ac.uk/mackay/codes/alist.html - -The specific format of this parity check matrix is described by Richardson and Urbanke in Appendix A of their book: Modern Coding Theory (ISBN 978-0-521-85229-6). - -As an example, see the file {$target}/share/gnuradio/fec/ldpc/n_1800_k_0902_gap_28.alist, which is used by the FEC example flowgraph ber_curve_gen_ldpc.grc. - -There is a small library of encoding-ready alist files at {$target}/share/gnuradio/fec/ldpc. - -To convert a parity check matrix to the appropriate format required for this encoder, use the python functions in {$target}/lib/python2.7/dist-packages/gnuradio/fec/LDPC/Generate_LDPC_matrix.py. - </doc> -</block> |