Hi all,
I'm building a new block by python to do sequential energy detector. In my
python block file, I want to divide my input into different part with same
length(number). And add the samples in each part.The python file is attached.
But when I use my block, it always print as follows:
pn[i] += d
IndexError: list index out of range
Evey suggestion will be appreciated. Thanks in advance.
Yan
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Copyright 2016 <+YOU OR YOUR COMPANY+>.
#
# This 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.
#
# This software 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 this software; see the file COPYING. If not, write to
# the Free Software Foundation, Inc., 51 Franklin Street,
# Boston, MA 02110-1301, USA.
#
import numpy
from gnuradio import gr
class seq_ed(gr.sync_block):
"""
docstring for block seq_ed
"""
def __init__(self,number,slots,beta,alpha,noise):
self.number=number
self.slots=slots
self.beta=beta
self.alpha=alpha
self.noise=noise
gr.sync_block.__init__(self,
name="seq_ed",
in_sig=[numpy.float32],
out_sig=[numpy.float32])
#def get_sequential_energy(self, sample):
def work(self, input_items, output_items):
in0 = input_items[0]
out = output_items[0]
for i in range(0,len(in0)/self.number):
pn = []
m = i*self.number
for d in in0[m: m + self.number]:
pn[i] += d
if pn[i] >= self.alpha:
out[i] = 1
elif pn[i] <= self.beta:
out[i] = 0
else:
if pn[i] >= self.noise:
out[i] = 1
else:
out[i] = 0
return len(output_items[0])
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