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authorPiotr Krysik <ptrkrysik@gmail.com>2018-09-12 00:35:05 +0700
committerPiotr Krysik <ptrkrysik@gmail.com>2018-09-13 15:35:44 +0200
commit58659a4dee885141b442100f1b395fd0856ec275 (patch)
treeb28a17cfe65f2966a43aae776a5362310c7da24b
parent562125270bff1bc6181989607426b803523c420a (diff)
trx/radio_if.py: clarify magic numbers in sample rate calculation
-rw-r--r--python/trx/radio_if.py4
1 files changed, 2 insertions, 2 deletions
diff --git a/python/trx/radio_if.py b/python/trx/radio_if.py
index 2aeb49a..f7f124f 100644
--- a/python/trx/radio_if.py
+++ b/python/trx/radio_if.py
@@ -75,8 +75,8 @@ class radio_if(gr.top_block):
GSM_TS_PERIOD_uS = GSM_SYM_PERIOD_uS * 156.25
GSM_UL_DL_SHIFT_uS = -(GSM_TS_PERIOD_uS * 3)
- # TODO: explain where do these values come from?
- SAMPLE_RATE = 4.0 * 1625000.0 / 6.0
+ GSM_SYM_RATE = (1.0 / GSM_SYM_PERIOD_uS) * 1e6
+ SAMPLE_RATE = GSM_SYM_RATE * osr
# FIXME: shall be measured (automatically?) for
# particular device and particular clock rate.