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Added carrier frequency offset correction to radio_if

This commit is contained in:
Piotr Krysik 2017-12-01 12:02:55 +01:00
parent 3dd981c779
commit c362245023
4 changed files with 113 additions and 74 deletions
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1
python/trx/CMakeLists.txt
View File

@ -26,5 +26,6 @@ GR_PYTHON_INSTALL(
fake_pm.py
radio_if.py
radio_if_grc.py
change_sign_of_dict_elements.py
DESTINATION ${GR_PYTHON_DIR}/grgsm/trx
)

1
python/trx/__init__.py
View File

@ -26,3 +26,4 @@ from ctrl_if_bb import ctrl_if_bb
from fake_pm import fake_pm
from radio_if_grc import radio_if_grc
from radio_if import radio_if
from change_sign_of_dict_elements import change_sign_of_dict_elements

30
python/trx/change_sign_of_dict_elements.py Normal file
View File

@ -0,0 +1,30 @@
"""
Embedded Python Blocks:
Each this file is saved, GRC will instantiate the first class it finds to get
ports and parameters of your block. The arguments to __init__ will be the
parameters. All of them are required to have default values!
"""
from gnuradio import gr
from pmt import *
class change_sign_of_dict_elements(gr.basic_block):
def __init__(self): # only default arguments here
gr.basic_block.__init__(
self,
name='Change sign of elts in dict',
in_sig=[],
out_sig=[]
)
self.message_port_register_in(intern("dict_in"))
self.message_port_register_out(intern("dict_out"))
self.set_msg_handler(intern("dict_in"), self.change_sign)
def change_sign(self, msg):
if is_dict(msg):
d = to_python(msg)
#print d
for key, value in d.items():
d[key] *= -1
self.message_port_pub(intern("dict_out"), to_pmt(d))

155
python/trx/radio_if_grc.py
View File

@ -5,9 +5,10 @@
# Title: Trx radio interface
# Author: (C) Piotr Krysik 2017
# Description: Alpha version of trx radio interface
# Generated: Thu Nov 30 13:41:21 2017
# Generated: Fri Dec 1 10:49:25 2017
##################################################
from change_sign_of_dict_elements import change_sign_of_dict_elements
from gnuradio import blocks
from gnuradio import digital
from gnuradio import eng_notation
@ -25,24 +26,24 @@ import time
class radio_if_grc(gr.top_block):
def __init__(self, samp_rate=13e6/12.0, tx_gain=30, tx_freq=938900000, rx_freq=938600000, rx_gain=40, osr=4, ppm=-1, trx_base_port="5700", trx_remote_addr="127.0.0.1", delay_correction=285.616e-6, uplink_shift=-(6.0/1625000*(156.25)*3), timing_advance=0):
def __init__(self, delay_correction=285.616e-6, osr=4, ppm=-0.799427, rx_freq=935e6+36*0.2e6, rx_gain=40, samp_rate=13e6/12.0, timing_advance=0, trx_base_port="5710", trx_remote_addr="127.0.0.1", tx_freq=935e6+36*0.2e6-45e6, tx_gain=40, uplink_shift=-(6.0/1625000*(156.25)*3)):
gr.top_block.__init__(self, "Trx radio interface")
##################################################
# Parameters
##################################################
self.samp_rate = samp_rate
self.tx_gain = tx_gain
self.tx_freq = tx_freq
self.rx_freq = rx_freq
self.rx_gain = rx_gain
self.delay_correction = delay_correction
self.osr = osr
self.ppm = ppm
self.rx_freq = rx_freq
self.rx_gain = rx_gain
self.samp_rate = samp_rate
self.timing_advance = timing_advance
self.trx_base_port = trx_base_port
self.trx_remote_addr = trx_remote_addr
self.delay_correction = delay_correction
self.tx_freq = tx_freq
self.tx_gain = tx_gain
self.uplink_shift = uplink_shift
self.timing_advance = timing_advance
##################################################
# Blocks
@ -89,18 +90,24 @@ class radio_if_grc(gr.top_block):
)
self.gsm_controlled_rotator_cc_0_0 = grgsm.controlled_rotator_cc(-ppm/1.0e6*2*math.pi*tx_freq/samp_rate)
self.gsm_controlled_rotator_cc_0 = grgsm.controlled_rotator_cc(ppm/1.0e6*2*math.pi*rx_freq/samp_rate)
self.gsm_clock_offset_control_0 = grgsm.clock_offset_control(rx_freq, samp_rate, osr)
self.gsm_burst_type_filter_0 = grgsm.burst_type_filter(([3]))
self.gsm_burst_to_fn_time_0 = grgsm.burst_to_fn_time()
self.digital_burst_shaper_xx_0 = digital.burst_shaper_cc((firdes.window(firdes.WIN_HANN, 16, 0)), 0, 20, False, "packet_len")
self.change_sign_of_dict_elements = change_sign_of_dict_elements()
self.blocks_pdu_to_tagged_stream_0_0 = blocks.pdu_to_tagged_stream(blocks.byte_t, "packet_len")
##################################################
# Connections
##################################################
self.msg_connect((self.change_sign_of_dict_elements, 'dict_out'), (self.gsm_msg_to_tag_0_0, 'msg'))
self.msg_connect((self.gsm_burst_to_fn_time_0, 'fn_time_out'), (self.gsm_txtime_setter_0, 'fn_time'))
self.msg_connect((self.gsm_burst_type_filter_0, 'bursts_out'), (self.gsm_burst_to_fn_time_0, 'bursts_in'))
self.msg_connect((self.gsm_clock_offset_control_0, 'ctrl'), (self.change_sign_of_dict_elements, 'dict_in'))
self.msg_connect((self.gsm_clock_offset_control_0, 'ctrl'), (self.gsm_msg_to_tag_0, 'msg'))
self.msg_connect((self.gsm_preprocess_tx_burst_0, 'bursts_out'), (self.blocks_pdu_to_tagged_stream_0_0, 'pdus'))
self.msg_connect((self.gsm_receiver_0, 'C0'), (self.gsm_burst_type_filter_0, 'bursts_in'))
self.msg_connect((self.gsm_receiver_0, 'measurements'), (self.gsm_clock_offset_control_0, 'measurements'))
self.msg_connect((self.gsm_receiver_0, 'C0'), (self.ts_filter, 'in'))
self.msg_connect((self.gsm_trx_burst_if_0, 'bursts'), (self.gsm_txtime_setter_0, 'bursts_in'))
self.msg_connect((self.gsm_txtime_setter_0, 'bursts_out'), (self.gsm_preprocess_tx_burst_0, 'bursts_in'))
@ -115,32 +122,27 @@ class radio_if_grc(gr.top_block):
self.connect((self.low_pass_filter_0_0, 0), (self.gsm_receiver_0, 0))
self.connect((self.uhd_usrp_source_0, 0), (self.gsm_msg_to_tag_0, 0))
def get_samp_rate(self):
return self.samp_rate
def get_delay_correction(self):
return self.delay_correction
def set_samp_rate(self, samp_rate):
self.samp_rate = samp_rate
self.low_pass_filter_0_0.set_taps(firdes.low_pass(1, self.samp_rate, 125e3, 5e3, firdes.WIN_HAMMING, 6.76))
def set_delay_correction(self, delay_correction):
self.delay_correction = delay_correction
self.gsm_txtime_setter_0.set_delay_correction(self.delay_correction+self.uplink_shift)
def get_osr(self):
return self.osr
def set_osr(self, osr):
self.osr = osr
self.gsm_gmsk_mod_0.set_sps(self.osr)
def get_ppm(self):
return self.ppm
def set_ppm(self, ppm):
self.ppm = ppm
self.gsm_controlled_rotator_cc_0.set_phase_inc(self.ppm/1.0e6*2*math.pi*self.rx_freq/self.samp_rate)
self.gsm_controlled_rotator_cc_0_0.set_phase_inc(-self.ppm/1.0e6*2*math.pi*self.tx_freq/self.samp_rate)
self.uhd_usrp_sink_0.set_samp_rate(self.samp_rate)
self.uhd_usrp_source_0.set_samp_rate(self.samp_rate)
def get_tx_gain(self):
return self.tx_gain
def set_tx_gain(self, tx_gain):
self.tx_gain = tx_gain
self.uhd_usrp_sink_0.set_gain(self.tx_gain, 0)
def get_tx_freq(self):
return self.tx_freq
def set_tx_freq(self, tx_freq):
self.tx_freq = tx_freq
self.gsm_controlled_rotator_cc_0_0.set_phase_inc(-self.ppm/1.0e6*2*math.pi*self.tx_freq/self.samp_rate)
self.uhd_usrp_sink_0.set_center_freq(self.tx_freq, 0)
def get_rx_freq(self):
return self.rx_freq
@ -158,20 +160,23 @@ class radio_if_grc(gr.top_block):
self.uhd_usrp_source_0.set_gain(self.rx_gain, 0)
def get_osr(self):
return self.osr
def get_samp_rate(self):
return self.samp_rate
def set_osr(self, osr):
self.osr = osr
self.gsm_gmsk_mod_0.set_sps(self.osr)
def get_ppm(self):
return self.ppm
def set_ppm(self, ppm):
self.ppm = ppm
def set_samp_rate(self, samp_rate):
self.samp_rate = samp_rate
self.gsm_controlled_rotator_cc_0.set_phase_inc(self.ppm/1.0e6*2*math.pi*self.rx_freq/self.samp_rate)
self.gsm_controlled_rotator_cc_0_0.set_phase_inc(-self.ppm/1.0e6*2*math.pi*self.tx_freq/self.samp_rate)
self.low_pass_filter_0_0.set_taps(firdes.low_pass(1, self.samp_rate, 125e3, 5e3, firdes.WIN_HAMMING, 6.76))
self.uhd_usrp_sink_0.set_samp_rate(self.samp_rate)
self.uhd_usrp_source_0.set_samp_rate(self.samp_rate)
def get_timing_advance(self):
return self.timing_advance
def set_timing_advance(self, timing_advance):
self.timing_advance = timing_advance
self.gsm_txtime_setter_0.set_timing_advance(self.timing_advance)
def get_trx_base_port(self):
return self.trx_base_port
@ -185,12 +190,21 @@ class radio_if_grc(gr.top_block):
def set_trx_remote_addr(self, trx_remote_addr):
self.trx_remote_addr = trx_remote_addr
def get_delay_correction(self):
return self.delay_correction
def get_tx_freq(self):
return self.tx_freq
def set_delay_correction(self, delay_correction):
self.delay_correction = delay_correction
self.gsm_txtime_setter_0.set_delay_correction(self.delay_correction+self.uplink_shift)
def set_tx_freq(self, tx_freq):
self.tx_freq = tx_freq
self.gsm_controlled_rotator_cc_0_0.set_phase_inc(-self.ppm/1.0e6*2*math.pi*self.tx_freq/self.samp_rate)
self.uhd_usrp_sink_0.set_center_freq(self.tx_freq, 0)
def get_tx_gain(self):
return self.tx_gain
def set_tx_gain(self, tx_gain):
self.tx_gain = tx_gain
self.uhd_usrp_sink_0.set_gain(self.tx_gain, 0)
def get_uplink_shift(self):
return self.uplink_shift
@ -199,52 +213,45 @@ class radio_if_grc(gr.top_block):
self.uplink_shift = uplink_shift
self.gsm_txtime_setter_0.set_delay_correction(self.delay_correction+self.uplink_shift)
def get_timing_advance(self):
return self.timing_advance
def set_timing_advance(self, timing_advance):
self.timing_advance = timing_advance
self.gsm_txtime_setter_0.set_timing_advance(self.timing_advance)
def argument_parser():
parser = OptionParser(option_class=eng_option, usage="%prog: [options]")
parser.add_option(
"", "--samp-rate", dest="samp_rate", type="eng_float", default=eng_notation.num_to_str(13e6/12.0),
help="Set samp_rate [default=%default]")
"", "--delay-correction", dest="delay_correction", type="eng_float", default=eng_notation.num_to_str(285.616e-6),
help="Set delay_correction [default=%default]")
parser.add_option(
"-r", "--tx-gain", dest="tx_gain", type="eng_float", default=eng_notation.num_to_str(30),
help="Set tx_gain [default=%default]")
"", "--osr", dest="osr", type="intx", default=4,
help="Set OSR [default=%default]")
parser.add_option(
"-u", "--tx-freq", dest="tx_freq", type="eng_float", default=eng_notation.num_to_str(938900000),
help="Set tx_freq [default=%default]")
"", "--ppm", dest="ppm", type="eng_float", default=eng_notation.num_to_str(-0.799427),
help="Set Clock offset correction [default=%default]")
parser.add_option(
"-d", "--rx-freq", dest="rx_freq", type="eng_float", default=eng_notation.num_to_str(938600000),
"-d", "--rx-freq", dest="rx_freq", type="eng_float", default=eng_notation.num_to_str(935e6+36*0.2e6),
help="Set rx_freq [default=%default]")
parser.add_option(
"-g", "--rx-gain", dest="rx_gain", type="eng_float", default=eng_notation.num_to_str(40),
help="Set rx_gain [default=%default]")
parser.add_option(
"", "--osr", dest="osr", type="intx", default=4,
help="Set OSR [default=%default]")
"", "--samp-rate", dest="samp_rate", type="eng_float", default=eng_notation.num_to_str(13e6/12.0),
help="Set samp_rate [default=%default]")
parser.add_option(
"", "--ppm", dest="ppm", type="eng_float", default=eng_notation.num_to_str(-1),
help="Set Clock offset correction [default=%default]")
"", "--timing-advance", dest="timing_advance", type="eng_float", default=eng_notation.num_to_str(0),
help="Set timing_advance [default=%default]")
parser.add_option(
"", "--trx-base-port", dest="trx_base_port", type="string", default="5700",
help="Set 5700 [default=%default]")
"", "--trx-base-port", dest="trx_base_port", type="string", default="5710",
help="Set 5710 [default=%default]")
parser.add_option(
"", "--trx-remote-addr", dest="trx_remote_addr", type="string", default="127.0.0.1",
help="Set 127.0.0.1 [default=%default]")
parser.add_option(
"", "--delay-correction", dest="delay_correction", type="eng_float", default=eng_notation.num_to_str(285.616e-6),
help="Set delay_correction [default=%default]")
"-u", "--tx-freq", dest="tx_freq", type="eng_float", default=eng_notation.num_to_str(935e6+36*0.2e6-45e6),
help="Set tx_freq [default=%default]")
parser.add_option(
"-r", "--tx-gain", dest="tx_gain", type="eng_float", default=eng_notation.num_to_str(40),
help="Set tx_gain [default=%default]")
parser.add_option(
"", "--uplink-shift", dest="uplink_shift", type="eng_float", default=eng_notation.num_to_str(-(6.0/1625000*(156.25)*3)),
help="Set uplink_shift [default=%default]")
parser.add_option(
"", "--timing-advance", dest="timing_advance", type="eng_float", default=eng_notation.num_to_str(0),
help="Set timing_advance [default=%default]")
return parser
@ -252,7 +259,7 @@ def main(top_block_cls=radio_if_grc, options=None):
if options is None:
options, _ = argument_parser().parse_args()
tb = top_block_cls(samp_rate=options.samp_rate, tx_gain=options.tx_gain, tx_freq=options.tx_freq, rx_freq=options.rx_freq, rx_gain=options.rx_gain, osr=options.osr, ppm=options.ppm, trx_base_port=options.trx_base_port, trx_remote_addr=options.trx_remote_addr, delay_correction=options.delay_correction, uplink_shift=options.uplink_shift, timing_advance=options.timing_advance)
tb = top_block_cls(delay_correction=options.delay_correction, osr=options.osr, ppm=options.ppm, rx_freq=options.rx_freq, rx_gain=options.rx_gain, samp_rate=options.samp_rate, timing_advance=options.timing_advance, trx_base_port=options.trx_base_port, trx_remote_addr=options.trx_remote_addr, tx_freq=options.tx_freq, tx_gain=options.tx_gain, uplink_shift=options.uplink_shift)
tb.start()
tb.wait()