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<?xml version="1.0"?>
<!--
Copyright 2011 Free Software Foundation, Inc.
This file is part of GNU Radio
GNU Radio is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
GNU Radio is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Radio; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street,
Boston, MA 02110-1301, USA.
-->
<!--
###################################################
##OFDM Cyclic Prefixer
###################################################
-->
<block>
<name>OFDM Cyclic Prefixer</name>
<key>digital_ofdm_cyclic_prefixer</key>
<import>from gnuradio import digital</import>
<make>digital.ofdm_cyclic_prefixer($input_size, $input_size+$cp_len, $rolloff, $tagname)</make>
<param>
<name>FFT Length</name>
<key>input_size</key>
<value>fft_len</value>
<type>int</type>
</param>
<param>
<name>CP Length</name>
<key>cp_len</key>
<value>fft_len/4</value>
<type>int</type>
</param>
<param>
<name>Rolloff</name>
<key>rolloff</key>
<value>0</value>
<type>int</type>
<hide>#if $rolloff then 'none' else 'part'#</hide>
</param>
<param>
<name>Length Tag Key</name>
<key>tagname</key>
<value>"frame_len"</value>
<type>string</type>
</param>
<sink>
<name>in</name>
<type>complex</type>
<vlen>$input_size</vlen>
</sink>
<source>
<name>out</name>
<type>complex</type>
</source>
</block>
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