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trx/radio_if.py: clarify magic numbers in sample rate calculation 

Change-Id: I55f283113d0324a0236b7bbf13bce5718003b857
This commit is contained in:
Piotr Krysik 2018-09-12 00:35:05 +07:00
parent 562125270b
commit 58659a4dee
1 changed files with 2 additions and 2 deletions
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4
python/trx/radio_if.py
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@ -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.