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piotr6b78abc2014-07-08 23:29:13 +02001<?xml version="1.0"?>
2<block>
piotr14d942c2014-07-20 23:50:59 +02003 <name>FCCH bursts detector</name>
piotr6b78abc2014-07-08 23:29:13 +02004 <key>gsm_fcch_detector</key>
piotr6b78abc2014-07-08 23:29:13 +02005 <import>import gsm</import>
6 <make>gsm.fcch_detector($OSR)</make>
7<callback>set_OSR($OSR)</callback>
8 <param>
9 <name>OverSamplingRatio</name>
10 <key>OSR</key>
11 <value>4</value>
piotr29221782014-07-20 23:51:55 +020012 <type>int</type>
piotr6b78abc2014-07-08 23:29:13 +020013 </param>
14 <sink>
15 <name>in</name>
16 <type>complex</type>
17 <vlen>1</vlen>
18 </sink>
19 <source>
20 <name>out</name>
21 <type>complex</type>
22 <vlen>1</vlen>
23 </source>
24 <doc>Piotr Krysik
25Detects positions of FCCH bursts. At the end of each detected FCCH burst adds to the stream a tag with key "fcch" and value which is a frequency offset estimate. The input sampling frequency should be integer multiply of GSM GMKS symbol rate - 1625000/6 Hz.</doc>
26 <grc_source>/home/piotr/Odbiornik_gsm/gr-gsm/examples/gsm_fcch_detector.grc</grc_source>
27</block>