[PATCH] osmo-trx[master]: sigProcLib: Fix number of tail bits in random Normal Bursts ...

[Alexander Chemeris]

Review at  https://gerrit.osmocom.org/2762

sigProcLib: Fix number of tail bits in random Normal Bursts and zero Stealing Bits.

Each Normal Burst has 3 tail bits, not 4.
Also it's better to set stealing bits to 0 for maximum compatibility. We may want to
introduce a selector for each bit whether to set it to 0, to 1 or to a random number.

Change-Id: I0377029556c8b681b3ba3b635bf19572b34546ea
---
M Transceiver52M/sigProcLib.cpp
1 file changed, 9 insertions(+), 3 deletions(-)


  git pull ssh://gerrit.osmocom.org:29418/osmo-trx refs/changes/62/2762/1

diff --git a/Transceiver52M/sigProcLib.cpp b/Transceiver52M/sigProcLib.cpp
index c51d094..9a8c824 100644
--- a/Transceiver52M/sigProcLib.cpp
+++ b/Transceiver52M/sigProcLib.cpp
@@ -927,19 +927,25 @@
   signalVector *burst;
 
   /* Tail bits */
-  for (; i < 4; i++)
+  for (; i < 3; i++)
     (*bits)[i] = 0;
 
   /* Random bits */
-  for (; i < 61; i++)
+  for (; i < 60; i++)
     (*bits)[i] = rand() % 2;
+
+  /* Stealing bit */
+  (*bits)[i++] = 0;
 
   /* Training sequence */
   for (int n = 0; i < 87; i++, n++)
     (*bits)[i] = gTrainingSequence[tsc][n];
 
+  /* Stealing bit */
+  (*bits)[i++] = 0;
+
   /* Random bits */
-  for (; i < 144; i++)
+  for (; i < 145; i++)
     (*bits)[i] = rand() % 2;
 
   /* Tail bits */

-- 
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Gerrit-MessageType: newchange
Gerrit-Change-Id: I0377029556c8b681b3ba3b635bf19572b34546ea
Gerrit-PatchSet: 1
Gerrit-Project: osmo-trx
Gerrit-Branch: master
Gerrit-Owner: Alexander Chemeris <Alexander.Chemeris at gmail.com>