26 lines
875 B
Python
Executable File
26 lines
875 B
Python
Executable File
#!/usr/bin/env python3
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import numpy as np
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import matplotlib.pyplot as pp
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import rrc
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pre = np.array([ -1, 1, 1, 1, -1, 1, 1, 1, -1, 1, -1, 1, 1, 1, -1, 1, -1, -1, 1, -1, 1, 1, 1, 1, -1, 1, 1, 1, -1, -1, 1, 1, -1, 1, 1, -1, -1, -1, 1, -1, -1, 1, -1, -1, 1, -1, -1, 1, -1, 1, 1, 1, 1, 1, -1, 1, -1, -1, -1, -1, -1, -1, 1, 1, 1, -1, -1, -1, -1, -1, 1, -1, 1, -1, -1, 1, -1, 1, 1, 1, 1, 1, 1, -1, 1, 1, 1, 1, 1, 1, 1, -1, -1, -1, 1, -1, 1, 1, -1, -1, -1, 1, -1, 1, -1, -1, -1, 1, 1, -1, -1, 1, -1, -1, -1, -1, -1, 1, 1, -1, -1, -1, -1, 1, 1, -1, -1, -1]) * (1+1j)
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pre_up = np.zeros(2 * len(pre) + 1, dtype=complex)
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pre_up[1::2] = pre
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rrc_coef = rrc.rrc_design(150, 2)
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pre_flt = np.convolve(pre_up, rrc_coef, mode='same')
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print("===== Preamble =====")
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print(list(pre))
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print("===== Filtered Preamble =====")
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print(list(pre_flt))
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pp.plot(pre_up)
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pp.plot(pre_flt)
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pp.show()
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