<?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>
