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#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# DPD Calculation Engine main file.
#
# http://www.opendigitalradio.org
# Licence: The MIT License, see notice at the end of this file
"""This Python script is the main file for ODR-DabMod's DPD Computation Engine.
This engine calculates and updates the parameter of the digital
predistortion module of ODR-DabMod."""
import datetime
import os
import time
import matplotlib
matplotlib.use('GTKAgg')
import logging
dt = datetime.datetime.now().isoformat()
logging_path = "/tmp/dpd_{}".format(dt).replace(".", "_").replace(":", "-")
os.makedirs(logging_path)
logging.basicConfig(format='%(asctime)s - %(module)s - %(levelname)s - %(message)s',
datefmt='%Y-%m-%d %H:%M:%S',
filename='{}/dpd.log'.format(logging_path),
filemode='w',
level=logging.DEBUG)
# also log up to INFO to console
console = logging.StreamHandler()
console.setLevel(logging.INFO)
# set a format which is simpler for console use
formatter = logging.Formatter('%(asctime)s - %(module)s - %(levelname)s - %(message)s')
# tell the handler to use this format
console.setFormatter(formatter)
# add the handler to the root logger
logging.getLogger('').addHandler(console)
import numpy as np
import traceback
import src.Measure as Measure
import src.Model as Model
import src.ExtractStatistic as ExtractStatistic
import src.Model_Poly
import src.Adapt as Adapt
import src.Agc as Agc
import src.TX_Agc as TX_Agc
import src.Symbol_align
import src.const
import src.MER
import argparse
parser = argparse.ArgumentParser(
description="DPD Computation Engine for ODR-DabMod")
parser.add_argument('--port', default=50055, type=int,
help='port of DPD server to connect to (default: 50055)',
required=False)
parser.add_argument('--rc-port', default=9400, type=int,
help='port of ODR-DabMod ZMQ Remote Control to connect to (default: 9400)',
required=False)
parser.add_argument('--samplerate', default=8192000, type=int,
help='Sample rate',
required=False)
parser.add_argument('--coefs', default='poly.coef',
help='File with DPD coefficients, which will be read by ODR-DabMod',
required=False)
parser.add_argument('--txgain', default=73,
help='TX Gain',
required=False,
type=int)
parser.add_argument('--rxgain', default=30,
help='TX Gain',
required=False,
type=int)
parser.add_argument('--digital_gain', default=1,
help='Digital Gain',
required=False,
type=float)
parser.add_argument('--samps', default='81920', type=int,
help='Number of samples to request from ODR-DabMod',
required=False)
parser.add_argument('-i', '--iterations', default=1, type=int,
help='Number of iterations to run',
required=False)
parser.add_argument('-l', '--load-poly',
help='Load existing polynomial',
action="store_true")
cli_args = parser.parse_args()
port = cli_args.port
port_rc = cli_args.rc_port
coef_path = cli_args.coefs
digital_gain = cli_args.digital_gain
txgain = cli_args.txgain
rxgain = cli_args.rxgain
num_req = cli_args.samps
samplerate = cli_args.samplerate
num_iter = cli_args.iterations
SA = src.Symbol_align.Symbol_align(samplerate)
MER = src.MER.MER(samplerate)
c = src.const.const(samplerate)
meas = Measure.Measure(samplerate, port, num_req)
extStat = ExtractStatistic.ExtractStatistic(c, plot=True)
adapt = Adapt.Adapt(port_rc, coef_path)
coefs_am, coefs_pm = adapt.get_coefs()
model_poly = src.Model_Poly.Model_Poly(c, coefs_am, coefs_pm, plot=True)
if not cli_args.load_poly:
coefs_am, coefs_pm = model_poly.get_default_coefs()
adapt.set_coefs(model_poly.coefs_am, model_poly.coefs_pm)
adapt.set_digital_gain(digital_gain)
adapt.set_txgain(txgain)
adapt.set_rxgain(rxgain)
tx_gain = adapt.get_txgain()
rx_gain = adapt.get_rxgain()
digital_gain = adapt.get_digital_gain()
dpd_coefs_am, dpd_coefs_pm = adapt.get_coefs()
logging.info(
"TX gain {}, RX gain {}, dpd_coefs_am {},"
" dpd_coefs_pm {}, digital_gain {}".format(
tx_gain, rx_gain, dpd_coefs_am, dpd_coefs_pm, digital_gain
)
)
tx_agc = TX_Agc.TX_Agc(adapt)
# Automatic Gain Control
agc = Agc.Agc(meas, adapt)
agc.run()
state = "measure"
i = 0
while i < num_iter:
try:
# Measure
if state == "measure":
txframe_aligned, tx_ts, rxframe_aligned, rx_ts, rx_median = meas.get_samples()
tx, rx, phase_diff, n_per_bin = extStat.extract(txframe_aligned, rxframe_aligned)
n_use = int(len(n_per_bin) * 0.6)
tx = tx[:n_use]
rx = rx[:n_use]
phase_diff = phase_diff[:n_use]
if all(c.ES_n_per_bin == np.array(n_per_bin)[0:n_use]):
state = "model"
else:
state = "measure"
# Model
elif state == "model":
coefs_am, coefs_pm = model_poly.get_next_coefs(tx, rx, phase_diff)
del extStat
extStat = ExtractStatistic.ExtractStatistic(c, plot=True)
state = "adapt"
# Adapt
elif state == "adapt":
adapt.set_coefs(coefs_am, coefs_pm)
state = "report"
i += 1
# Report
elif state == "report":
try:
off = SA.calc_offset(txframe_aligned)
tx_mer = MER.calc_mer(txframe_aligned[off:off+c.T_U], debug=True)
rx_mer = MER.calc_mer(rxframe_aligned[off:off+c.T_U], debug=True)
mse = np.mean(np.abs((txframe_aligned - rxframe_aligned)**2))
logging.info("It {}: TX_MER {}, RX_MER {}," \
" MSE {}, coefs_am {}, coefs_pm {}".
format(i, tx_mer, rx_mer, mse, coefs_am, coefs_pm))
state = "measure"
except:
logging.warning("Iteration {}: Report failed.".format(i))
logging.warning(traceback.format_exc())
state = "measure"
except Exception as e:
logging.warning("Iteration {} failed.".format(i))
logging.warning(traceback.format_exc())
# The MIT License (MIT)
#
# Copyright (c) 2017 Andreas Steger, Matthias P. Braendli
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
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