File:Fading corraza vatalaro.png
Summary
| Description |
English: Developed according to [1] |
| Date | |
| Source | Own work |
| Author | Kirlf |
| PNG development | |
| Source code | Python codeimport numpy as np
import matplotlib.pyplot as plt
def K_alfa(alfa):
K0 = 2.731
K1 = -1.074e-1
K2 = 2.2774e-3
K = K0 + K1*alfa + K2*(alfa**2)
return K
def mu_alfa(alfa):
mu0 = -2.331
mu1 = 1.142e-1
mu2 = -1.939e-3
mu3 = 1.094e-5
mu = mu0 + mu1*alfa + mu2*(alfa**2) + mu3*(alfa**3)
return mu
def sigma_alfa(alfa):
sigma0 = 4.5
sigma1 = -0.05
sigma = sigma0 + sigma1*alfa
return sigma
alfa = np.arange(20, 80) # elevation angles
K = K_alfa(alfa) # Rician factor
mu = mu_alfa(alfa) # lognormal mean
sigma = sigma_alfa(alfa) # lognormal variance
fig, axs = plt.subplots(nrows=1, ncols=2,\
constrained_layout=True, figsize=(10, 5), dpi=150)
axs[0].plot(alfa, K, label='K')
axs[0].plot(alfa, sigma, label='$\sigma$')
axs[0].set_xlabel('elevation angles (degrees)')
axs[0].grid()
axs[0].legend()
axs[1].plot(alfa, mu, label='$\mu$', color='r')
axs[1].set_xlabel('elevation angles (degrees)')
axs[1].grid()
axs[1].legend()
plt.show()
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![[1]](./File:Fading_corraza_vatalaro.png#cite_note-1){kind=link}
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
- ↑ Corazza, G. E., & Vatalaro, F. (1994). A statistical model for land mobile satellite channels and its application to nongeostationary orbit systems. IEEE Transactions on vehicular technology, 43(3), 738-742.
