/Python/Pseudo-random input signal python

Pseudo-random input signal python

import numpy as np
import matplotlib.pyplot as plt

nstep = 300

# random signal generation

a_range = [0,2]
a = np.random.rand(nstep) * (a_range[1]-a_range[0]) + a_range[0] # range for amplitude

b_range = [2, 10]
b = np.random.rand(nstep) *(b_range[1]-b_range[0]) + b_range[0] # range for frequency
b = np.round(b)
b = b.astype(int)

b[0] = 0

for i in range(1,np.size(b)):
    b[i] = b[i-1]+b[i]

# Random Signal
i=0
random_signal = np.zeros(nstep)
while b[i]<np.size(random_signal):
    k = b[i]
    random_signal[k:] = a[i]
    i=i+1

# PRBS
a = np.zeros(nstep)
j = 0
while j < nstep:
    a[j] = 5
    a[j+1] = -5
    j = j+2

i=0
prbs = np.zeros(nstep)
while b[i]<np.size(prbs):
    k = b[i]
    prbs[k:] = a[i]
    i=i+1

plt.figure(0) 
plt.subplot(2,1,1)
plt.plot(random_signal, drawstyle='steps',label='Random Signal')
plt.legend()
plt.subplot(2,1,2)
plt.plot(prbs, drawstyle='steps', label='PRBS')
plt.legend()
plt.show()

Source: stackoverflow.com

Similar codes

-1 vote140 views2 answers
Template strings in python
Python
1 vote153 views1 answer
New working version of linkchecker
Python
1 vote159 views2 answers
Python rgb colors
Python
33 votes153 views6 answers
Python create requirements.txt
Python
1 vote143 views2 answers
Pyqt5 messagebox settext
Python
0 vote145 views1 answer
How to decode recv data in python
Python
0 vote152 views2 answers
How to decode hexadecimal in python
Python
0 vote143 views5 answers
Append in dictionary with matrix values
Python
22 votes148 views4 answers
Python get date next week
Python
0 vote143 views1 answer
Traceback (most recent call last): File "c:\Users\asus\OneDrive\Documents\anak sekolah\pip\string formating\no8.py", line 1, in <module> f = open("demofile.txt","r") FileNotFoundError: [Errno 2] No such file or dir
Python