Added new blocks written in python for new experimental gsm receiver.
FCCH burst tagger is element of hierarchical block - FCCH detector that adds tags after every detected FCCH burst. The value of each tag is a frequency offset estimate.
SCH detector waits for tags from FCCH detector which are used to find SCH burst position. It is unfinished.
diff --git a/grc/gsm_fcch_burst_tagger.xml b/grc/gsm_fcch_burst_tagger.xml
new file mode 100644
index 0000000..90f5688
--- /dev/null
+++ b/grc/gsm_fcch_burst_tagger.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0"?>
+<block>
+ <name>fcch_burst_tagger</name>
+ <key>gsm_fcch_burst_tagger</key>
+ <category>GSM</category>
+ <import>import gsm</import>
+ <make>gsm.fcch_burst_tagger($OSR)</make>
+ <param>
+ <name>OSR</name>
+ <key>OSR</key>
+ <type>int</type>
+ </param>
+
+ <sink>
+ <name>in</name>
+ <type>complex</type>
+ </sink>
+
+ <sink>
+ <name>threshold</name>
+ <type>float</type>
+ </sink>
+
+ <source>
+ <name>out</name>
+ <type>complex</type>
+ </source>
+</block>