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#!/usr/bin/env python
##################################################
# Gnuradio Python Flow Graph
# Title: Phase Noise Generator
# Author: mettus
# Generated: Thu Aug 1 11:59:39 2013
##################################################
from __future__ import unicode_literals
from gnuradio import analog
from gnuradio import blocks
from gnuradio import filter
from gnuradio import gr
from gnuradio.filter import firdes
class phase_noise_gen(gr.hier_block2):
def __init__(self, noise_mag=0, alpha=0.1):
gr.hier_block2.__init__(
self, "Phase Noise Generator",
gr.io_signature(1, 1, gr.sizeof_gr_complex*1),
gr.io_signature(1, 1, gr.sizeof_gr_complex*1),
)
##################################################
# Parameters
##################################################
self.noise_mag = noise_mag
self.alpha = alpha
##################################################
# Blocks
##################################################
self.filter_single_pole_iir_filter_xx_0 = filter.single_pole_iir_filter_ff(alpha, 1)
self.blocks_transcendental_0_0 = blocks.transcendental("sin", "float")
self.blocks_transcendental_0 = blocks.transcendental("cos", "float")
self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
self.blocks_float_to_complex_0 = blocks.float_to_complex(1)
self.analog_noise_source_x_0 = analog.noise_source_f(analog.GR_GAUSSIAN, noise_mag, 42)
##################################################
# Connections
##################################################
self.connect((self.blocks_float_to_complex_0, 0), (self.blocks_multiply_xx_0, 1))
self.connect((self.analog_noise_source_x_0, 0), (self.filter_single_pole_iir_filter_xx_0, 0))
self.connect((self.blocks_multiply_xx_0, 0), (self, 0))
self.connect((self, 0), (self.blocks_multiply_xx_0, 0))
self.connect((self.filter_single_pole_iir_filter_xx_0, 0), (self.blocks_transcendental_0, 0))
self.connect((self.filter_single_pole_iir_filter_xx_0, 0), (self.blocks_transcendental_0_0, 0))
self.connect((self.blocks_transcendental_0, 0), (self.blocks_float_to_complex_0, 0))
self.connect((self.blocks_transcendental_0_0, 0), (self.blocks_float_to_complex_0, 1))
# QT sink close method reimplementation
def get_noise_mag(self):
return self.noise_mag
def set_noise_mag(self, noise_mag):
self.noise_mag = noise_mag
self.analog_noise_source_x_0.set_amplitude(self.noise_mag)
def get_alpha(self):
return self.alpha
def set_alpha(self, alpha):
self.alpha = alpha
self.filter_single_pole_iir_filter_xx_0.set_taps(self.alpha)
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