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authorAlexander Chemeris <Alexander.Chemeris@gmail.com>2015-06-04 15:39:41 -0400
committerTom Tsou <tom.tsou@ettus.com>2015-07-30 14:17:59 -0700
commit954b118bfad44c6a156ec8e06c5fc8f53718a686 (patch)
tree3a1523aa5b40fcb4518f7439ccb8d84c1eaa63a5 /Transceiver52M/Transceiver.h
parentdbe26abcb9e095ce712802d3a64d337a88cae8df (diff)
Transceiver: Fix clipping detection.
There are two primary changes in this commit: 1) Return values of detect functions changed form bool to int to actually pass the return value from the inner function and notify higher levels about clipping. Previously the information was lost due to conversion to bool. 2) Clipping level is not the final verdict now. We still try to demod a burst and mark it as clipped only if the level is above the clipping level AND we can't demod it. The reasoning for this is that in real life we want to do as much as possible to demod the burst, because we want to get as much from our dynamic range as possible. So a little bit of clipping is fine and is expected. We just don't want too much of it to break our demod. Signed-off-by: Tom Tsou <tom.tsou@ettus.com>
Diffstat (limited to 'Transceiver52M/Transceiver.h')
-rw-r--r--Transceiver52M/Transceiver.h12
1 files changed, 6 insertions, 6 deletions
diff --git a/Transceiver52M/Transceiver.h b/Transceiver52M/Transceiver.h
index 1639d0d..a7b04ed 100644
--- a/Transceiver52M/Transceiver.h
+++ b/Transceiver52M/Transceiver.h
@@ -209,14 +209,14 @@ private:
void writeClockInterface(void);
/** Detect RACH bursts */
- bool detectRACH(TransceiverState *state,
- signalVector &burst,
- complex &amp, float &toa);
+ int detectRACH(TransceiverState *state,
+ signalVector &burst,
+ complex &amp, float &toa);
/** Detect normal bursts */
- bool detectTSC(TransceiverState *state,
- signalVector &burst,
- complex &amp, float &toa, GSM::Time &time);
+ int detectTSC(TransceiverState *state,
+ signalVector &burst,
+ complex &amp, float &toa, GSM::Time &time);
/** Demodulat burst and output soft bits */
SoftVector *demodulate(TransceiverState *state,