diff options
Diffstat (limited to 'gr-msdd6000/src/python-examples/ofdm/gr_plot_ofdm.py')
| -rwxr-xr-x | gr-msdd6000/src/python-examples/ofdm/gr_plot_ofdm.py | 268 |
1 files changed, 0 insertions, 268 deletions
diff --git a/gr-msdd6000/src/python-examples/ofdm/gr_plot_ofdm.py b/gr-msdd6000/src/python-examples/ofdm/gr_plot_ofdm.py deleted file mode 100755 index 0bca41037..000000000 --- a/gr-msdd6000/src/python-examples/ofdm/gr_plot_ofdm.py +++ /dev/null @@ -1,268 +0,0 @@ -#!/usr/bin/env python -# -# Copyright 2007 Free Software Foundation, Inc. -# -# This file is part of GNU Radio -# -# GNU Radio is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 3, or (at your option) -# any later version. -# -# GNU Radio is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with GNU Radio; see the file COPYING. If not, write to -# the Free Software Foundation, Inc., 51 Franklin Street, -# Boston, MA 02110-1301, USA. -# - -import scipy, pylab, math -import struct, sys -from pylab import * -from matplotlib.font_manager import fontManager, FontProperties -from optparse import OptionParser -from scipy import fftpack -from math import log10 - -matplotlib.interactive(True) -matplotlib.use('TkAgg') - -class draw_constellation: - def __init__(self, options): - derot_file = "ofdm_frame_sink_c.dat" - acq_file = "ofdm_frame_acq_c.dat" - fft_file = "fft_out_c.dat" - - self.h_derot_file = open(derot_file, "r") - self.h_acq_file = open(acq_file, "r") - self.h_fft_file = open(fft_file, "r") - - self.occ_tones = options.occ_tones - self.fft_size = options.fft_size - self.symbol = options.start - self.sample_rate = options.sample_rate - - self.axis_font_size = 16 - self.label_font_size = 18 - self.title_font_size = 20 - self.text_size = 22 - - # Setup PLOT - self.fig = figure(1, figsize=(14, 9), facecolor='w') - rcParams['xtick.labelsize'] = self.axis_font_size - rcParams['ytick.labelsize'] = self.axis_font_size - - self.text_sym = figtext(0.05, 0.95, ("Symbol: %s" % self.symbol), weight="heavy", size=self.text_size) - - self.make_plots() - - self.button_left_axes = self.fig.add_axes([0.45, 0.01, 0.05, 0.05], frameon=True) - self.button_left = Button(self.button_left_axes, "<") - self.button_left_callback = self.button_left.on_clicked(self.button_left_click) - - self.button_right_axes = self.fig.add_axes([0.50, 0.01, 0.05, 0.05], frameon=True) - self.button_right = Button(self.button_right_axes, ">") - self.button_right_callback = self.button_right.on_clicked(self.button_right_click) - - self.xlim = self.sp_eq.get_xlim() - - self.manager = get_current_fig_manager() - #connect('draw_event', self.zoom) - connect('key_press_event', self.click) - show() - - def get_data(self): - self.text_sym.set_text("Symbol: %d" % (self.symbol)) - - derot_data = scipy.fromfile(self.h_derot_file, dtype=scipy.complex64, count=self.occ_tones) - acq_data = scipy.fromfile(self.h_acq_file, dtype=scipy.complex64, count=self.occ_tones) - fft_data = scipy.fromfile(self.h_fft_file, dtype=scipy.complex64, count=self.fft_size) - if(len(acq_data) == 0): - print "End of File" - else: - self.acq_data_reals = [r.real for r in acq_data] - self.acq_data_imags = [i.imag for i in acq_data] - self.derot_data_reals = [r.real for r in derot_data] - self.derot_data_imags = [i.imag for i in derot_data] - - self.unequalized_angle = [math.atan2(x.imag, x.real) for x in fft_data] - self.equalized_angle = [math.atan2(x.imag, x.real) for x in acq_data] - self.derot_equalized_angle = [math.atan2(x.imag, x.real) for x in derot_data] - - self.time = [i*(1/self.sample_rate) for i in range(len(acq_data))] - ffttime = [i*(1/self.sample_rate) for i in range(len(fft_data))] - - self.freq = self.get_freq(ffttime, self.sample_rate) - - for i in range(len(fft_data)): - if(abs(fft_data[i]) == 0.0): - fft_data[i] = complex(1e-6,1e-6) - self.fft_data = [20*log10(abs(f)) for f in fft_data] - - def get_freq(self, time, sample_rate, T=1): - N = len(time) - Fs = 1.0 / (max(time) - min(time)) - Fn = 0.5 * sample_rate - freq = [-Fn + i*Fs for i in range(N)] - return freq - - def make_plots(self): - self.h_acq_file.seek(8*self.symbol*self.occ_tones, 0) - self.h_fft_file.seek(8*self.symbol*self.fft_size, 0) - self.h_derot_file.seek(8*self.symbol*self.occ_tones, 0) - - self.get_data() - - # Subplot: constellation of rotated symbols - self.sp_const = self.fig.add_subplot(4,1,1, position=[0.15, 0.55, 0.3, 0.35]) - self.sp_const.set_title(("Constellation"), fontsize=self.title_font_size, fontweight="bold") - self.sp_const.set_xlabel("Inphase", fontsize=self.label_font_size, fontweight="bold") - self.sp_const.set_ylabel("Qaudrature", fontsize=self.label_font_size, fontweight="bold") - self.plot_const = plot(self.acq_data_reals, self.acq_data_imags, 'bo') - self.plot_const += plot(self.derot_data_reals, self.derot_data_imags, 'ro') - self.sp_const.axis([-2, 2, -2, 2]) - - # Subplot: unequalized angle - self.sp_uneq = self.fig.add_subplot(4,2,1, position=[0.575, 0.55, 0.3, 0.35]) - self.sp_uneq.set_title(("Unequalized Angle"), fontsize=self.title_font_size, fontweight="bold") - self.sp_uneq.set_xlabel("Time (s)", fontsize=self.label_font_size, fontweight="bold") - self.sp_uneq.set_ylabel("Angle", fontsize=self.label_font_size, fontweight="bold") - uneqscale = range(len(self.unequalized_angle)) - self.plot_uneq = plot(uneqscale, self.unequalized_angle, 'bo') - - # Subplot: equalized angle - self.sp_eq = self.fig.add_subplot(4,1,2, position=[0.15, 0.1, 0.3, 0.35]) - self.sp_eq.set_title(("Equalized Angle"), fontsize=self.title_font_size, fontweight="bold") - self.sp_eq.set_xlabel("Time (s)", fontsize=self.label_font_size, fontweight="bold") - self.sp_eq.set_ylabel("Angle", fontsize=self.label_font_size, fontweight="bold") - eqscale = range(len(self.equalized_angle)) - self.plot_eq = plot(eqscale, self.equalized_angle, 'bo') - self.plot_eq += plot(eqscale, self.derot_equalized_angle, 'ro', markersize=4) - - # Subplot: FFT - self.sp_fft = self.fig.add_subplot(4,2,2, position=[0.575, 0.1, 0.3, 0.35]) - self.sp_fft.set_title(("FFT"), fontsize=self.title_font_size, fontweight="bold") - self.sp_fft.set_xlabel("Frequency (MHz)", fontsize=self.label_font_size, fontweight="bold") - self.sp_fft.set_ylabel("Power (dBm)", fontsize=self.label_font_size, fontweight="bold") - self.plot_fft = plot(self.freq, self.fft_data, '-bo') - - draw() - - def update_plots(self): - eqscale = range(len(self.equalized_angle)) - uneqscale = range(len(self.unequalized_angle)) - self.plot_eq[0].set_data([eqscale, self.equalized_angle]) - self.plot_eq[1].set_data([eqscale, self.derot_equalized_angle]) - self.plot_uneq[0].set_data([uneqscale, self.unequalized_angle]) - self.sp_eq.set_ylim([-4, 4]) - self.sp_uneq.set_ylim([-4, 4]) - - #self.sp_iq.axis([min(self.time), max(self.time), - # 1.5*min([min(self.acq_data_reals), min(self.acq_data_imags)]), - # 1.5*max([max(self.acq_data_reals), max(self.acq_data_imags)])]) - - self.plot_const[0].set_data([self.acq_data_reals, self.acq_data_imags]) - self.plot_const[1].set_data([self.derot_data_reals, self.derot_data_imags]) - self.sp_const.axis([-2, 2, -2, 2]) - - self.plot_fft[0].set_data([self.freq, self.fft_data]) - - draw() - - def zoom(self, event): - newxlim = self.sp_eq.get_xlim() - if(newxlim != self.xlim): - self.xlim = newxlim - r = self.reals[int(ceil(self.xlim[0])) : int(ceil(self.xlim[1]))] - i = self.imags[int(ceil(self.xlim[0])) : int(ceil(self.xlim[1]))] - - self.plot_const[0].set_data(r, i) - self.sp_const.axis([-2, 2, -2, 2]) - self.manager.canvas.draw() - draw() - - def click(self, event): - forward_valid_keys = [" ", "down", "right"] - backward_valid_keys = ["up", "left"] - - if(find(event.key, forward_valid_keys)): - self.step_forward() - - elif(find(event.key, backward_valid_keys)): - self.step_backward() - - def button_left_click(self, event): - self.step_backward() - - def button_right_click(self, event): - self.step_forward() - - def step_forward(self): - self.symbol += 1 - self.get_data() - self.update_plots() - - def step_backward(self): - # Step back in file position - self.symbol -= 1 - if(self.h_acq_file.tell() >= 16*self.occ_tones): - self.h_acq_file.seek(-16*self.occ_tones, 1) - else: - self.symbol = 0 - self.h_acq_file.seek(-self.h_acq_file.tell(),1) - - - if(self.h_derot_file.tell() >= 16*self.occ_tones): - self.h_derot_file.seek(-16*self.occ_tones, 1) - else: - self.symbol = 0 - self.h_derot_file.seek(-self.h_derot_file.tell(),1) - - - if(self.h_fft_file.tell() >= 16*self.fft_size): - self.h_fft_file.seek(-16*self.fft_size, 1) - else: - self.symbol = 0 - self.h_fft_file.seek(-self.h_fft_file.tell(),1) - - self.get_data() - self.update_plots() - - - -#FIXME: there must be a way to do this with a Python builtin -def find(item_in, list_search): - for l in list_search: - if item_in == l: - return True - return False - -def main(): - usage="%prog: [options]" - - parser = OptionParser(conflict_handler="resolve", usage=usage) - parser.add_option("", "--fft-size", type="int", default=512, - help="Specify the size of the FFT [default=%default]") - parser.add_option("", "--occ-tones", type="int", default=200, - help="Specify the number of occupied tones [default=%default]") - parser.add_option("-s", "--start", type="int", default=0, - help="Specify the starting symbol to plot [default=%default]") - parser.add_option("-R", "--sample-rate", type="float", default=1.0, - help="Set the sampler rate of the data [default=%default]") - - (options, args) = parser.parse_args () - - dc = draw_constellation(options) - -if __name__ == "__main__": - try: - main() - except KeyboardInterrupt: - pass - - - |