[Discuss-gnuradio] Spectrum sensing Simulation Only

[Bogale, Tadilo Endeshaw]

Hello Everyone

I am a new to gnuradio. I would like to do simulation of spectrum sensing 
(Simple energy detector with single band only).

Normally I have seen "usrp_spectrum_sense.py". However, that is written for 
USRP (and not easy to understand and modify it). Actually I have a difficulty 
in computing average and display it continuously in a graphical user interface. 

See also my grc and corresponding python code (The vector sinc block is not 
correct).

Any help is appreciated.

Thanks,
---
Tadilo Endeshaw, PhD
 Postdoctoral Researcher
 Institut National de recherche Scientifique
 Centre Energie Matriaux Telecommunications
 Place Bonaventure,
 800 de la Gauchetiere Ouest, Suite 6900
 H5A 1K6
 Montreal, QC
 Canada
 E-mail : tadilo.bog...@emt.inrs.ca
          tadilo...@yahoo.com (private) 
Personal home page: https://sites.google.com/site/tadilomypage/

SimpleEnergyDetector5.grc
Description: SimpleEnergyDetector5.grc

#!/usr/bin/env python
##################################################
# Gnuradio Python Flow Graph
# Title: Top Block
# Generated: Tue Jul 29 15:34:05 2014
##################################################

from gnuradio import blocks
from gnuradio import eng_notation
from gnuradio import fft
from gnuradio import gr
from gnuradio import window
from gnuradio.eng_option import eng_option
from gnuradio.gr import firdes
from grc_gnuradio import wxgui as grc_wxgui
from optparse import OptionParser
import wx

class top_block(grc_wxgui.top_block_gui):

	def __init__(self):
		grc_wxgui.top_block_gui.__init__(self, title="Top Block")

		##################################################
		# Variables
		##################################################
		self.samp_rate = samp_rate = 10000

		##################################################
		# Blocks
		##################################################
		self.gr_vector_source_x_1 = gr.vector_source_c((0, 0, 0), True, 1024)
		self.gr_vector_source_x_0 = gr.vector_source_c((0, 0, 0), True, 1024)
		self.gr_vector_sink_x_0 = gr.vector_sink_f(1024)
		self.gr_add_xx_0 = gr.add_vcc(1024)
		self.fft_vxx_1 = fft.fft_vcc(1024, True, (window.blackmanharris(1024)), True, 1)
		self.blocks_throttle_0 = blocks.throttle(gr.sizeof_gr_complex*1024, samp_rate)
		self.blocks_complex_to_mag_squared_0 = blocks.complex_to_mag_squared(1024)

		##################################################
		# Connections
		##################################################
		self.connect((self.gr_vector_source_x_0, 0), (self.gr_add_xx_0, 1))
		self.connect((self.gr_vector_source_x_1, 0), (self.gr_add_xx_0, 0))
		self.connect((self.gr_add_xx_0, 0), (self.blocks_throttle_0, 0))
		self.connect((self.blocks_complex_to_mag_squared_0, 0), (self.gr_vector_sink_x_0, 0))
		self.connect((self.blocks_throttle_0, 0), (self.fft_vxx_1, 0))
		self.connect((self.fft_vxx_1, 0), (self.blocks_complex_to_mag_squared_0, 0))


	def get_samp_rate(self):
		return self.samp_rate

	def set_samp_rate(self, samp_rate):
		self.samp_rate = samp_rate
		self.blocks_throttle_0.set_sample_rate(self.samp_rate)

if __name__ == '__main__':
	parser = OptionParser(option_class=eng_option, usage="%prog: [options]")
	(options, args) = parser.parse_args()
	tb = top_block()
	tb.Run(True)


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