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    <derivedcompoundref refid="classgr_1_1fec_1_1code_1_1ldpc__H__matrix" prot="public" virt="virtual">gr::fec::code::ldpc_H_matrix</derivedcompoundref>
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        <type></type>
        <definition>gr::fec::code::fec_mtrx::fec_mtrx</definition>
        <argsstring>(void)</argsstring>
        <name>fec_mtrx</name>
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        <type></type>
        <definition>virtual gr::fec::code::fec_mtrx::~fec_mtrx</definition>
        <argsstring>()</argsstring>
        <name>~fec_mtrx</name>
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        <type>void</type>
        <definition>virtual void gr::fec::code::fec_mtrx::encode</definition>
        <argsstring>(unsigned char *outbuffer, const unsigned char *inbuffer) const =0</argsstring>
        <name>encode</name>
        <qualifiedname>gr::fec::code::fec_mtrx::encode</qualifiedname>
        <reimplementedby refid="classgr_1_1fec_1_1code_1_1ldpc__G__matrix_1a1294f27355ff89a809af34c684d97965">encode</reimplementedby>
        <reimplementedby refid="classgr_1_1fec_1_1code_1_1ldpc__H__matrix_1a92464566cde518e6dc1f079951460b08">encode</reimplementedby>
        <param>
          <type>unsigned char *</type>
          <declname>outbuffer</declname>
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        <param>
          <type>const unsigned char *</type>
          <declname>inbuffer</declname>
        </param>
        <briefdescription>
<para>Encode <computeroutput>inbuffer</computeroutput> with LDPC H matrix into <computeroutput>outbuffer</computeroutput>. </para>
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        <definition>virtual void gr::fec::code::fec_mtrx::decode</definition>
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        <name>decode</name>
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          <type>unsigned char *</type>
          <declname>outbuffer</declname>
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        <param>
          <type>const float *</type>
          <declname>inbuffer</declname>
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        <param>
          <type>unsigned int</type>
          <declname>frame_size</declname>
        </param>
        <param>
          <type>unsigned int</type>
          <declname>max_iterations</declname>
        </param>
        <briefdescription>
<para>Decode <computeroutput>inbuffer</computeroutput> with LDPC H matrix into <computeroutput>outbuffer</computeroutput>. </para>
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        <type>unsigned int</type>
        <definition>virtual unsigned int gr::fec::code::fec_mtrx::n</definition>
        <argsstring>() const =0</argsstring>
        <name>n</name>
        <qualifiedname>gr::fec::code::fec_mtrx::n</qualifiedname>
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<para>Get the codeword length n. </para>
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        <type>unsigned int</type>
        <definition>virtual unsigned int gr::fec::code::fec_mtrx::k</definition>
        <argsstring>() const =0</argsstring>
        <name>k</name>
        <qualifiedname>gr::fec::code::fec_mtrx::k</qualifiedname>
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<para>Get the information word length k. </para>
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        <detaileddescription>
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<para>Base class for FEC matrix objects. </para>
    </briefdescription>
    <detaileddescription>
<para>Base class of <ref refid="classgr_1_1fec_1_1code_1_1ldpc__H__matrix" kindref="compound">ldpc_H_matrix</ref> and <ref refid="classgr_1_1fec_1_1code_1_1ldpc__G__matrix" kindref="compound">ldpc_G_matrix</ref> classes. The child objects can be either generator matrices or parity check matrices. This base class can be provided to the decoder <ref refid="classgr_1_1fec_1_1code_1_1ldpc__bit__flip__decoder" kindref="compound">ldpc_bit_flip_decoder</ref>, whereas the encoder classes <ref refid="classgr_1_1fec_1_1code_1_1ldpc__gen__mtrx__encoder" kindref="compound">ldpc_gen_mtrx_encoder</ref> and <ref refid="classgr_1_1fec_1_1ldpc__encoder" kindref="compound">ldpc_encoder</ref> will not accept this base class; they require one of the child classes. </para>
    </detaileddescription>
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