--- /dev/null
+<?xml version="1.0"?>
+<!--
+###################################################
+##Simple Correlator
+###################################################
+ -->
+<block>
+ <name>Simple Correlator</name>
+ <key>gr_simple_correlator</key>
+ <import>from gnuradio import gr</import>
+ <make>gr.simple_correlator($payload_bytesize)</make>
+ <param>
+ <name>Payload Byte Size</name>
+ <key>payload_bytesize</key>
+ <type>int</type>
+ </param>
+ <sink>
+ <name>in</name>
+ <type>float</type>
+ </sink>
+ <source>
+ <name>out</name>
+ <type>byte</type>
+ </source>
+</block>