def test_001_single_payload(self):
print("test_001_single_payload")
S = 42
x = lora.gen_sym(SF, S)
win_tags = {
0: ('new_window', {
'power1': 1.0,
'power2': 0.0,
'win_len': N,
'tau': 0.0,
'delta_cfo': 0.0,
'Tu': SYNC_TYPE_PAYLOAD,
'Ti1': SYNC_TYPE_VOID,
'Ti2': SYNC_TYPE_VOID
})
}
y, tags = self._feed_demod(x, win_tags)
self.assertEqual(len(y), 1)
self.assertEqual(len(tags), 1)
demod = tags[0].value
self.assertEqual(demod['Su'], S)
self.assertAlmostEqual(demod['Mu'], 1)
self.assertAlmostEqual(y, i0(1), places=5)
def test_004_half_payloads_sto(self):
print("test_004_half_payloads_sto")
Su, Si1, Si2 = 21, 20, 110
Pu, Pi = 1.0, 0.5
lambda_sto = 0.5
l_sto = N / 2
ctau = np.ceil(l_sto + lambda_sto)
x_u = np.sqrt(Pu) * lora.gen_sym(SF, Su)
x_i = np.sqrt(Pi) * np.concatenate([
lora.gen_sym(SF, Si1, sto_frac=lambda_sto)[l_sto:N],
lora.gen_sym(SF, Si2, sto_frac=lambda_sto)[0:l_sto]
])
x = x_u + x_i
win_tags = {
0: ('new_window', {
'power1': Pu,
'power2': Pi,
'win_len': N,
'tau': (N - l_sto + lambda_sto),
'delta_cfo': 0.0,
'Tu': SYNC_TYPE_PAYLOAD,
'Ti1': SYNC_TYPE_PAYLOAD,
'Ti2': SYNC_TYPE_PAYLOAD
})
}
y, tags = self._feed_demod(x, win_tags, id=0)
self.assertEqual(len(y), 1)
self.assertEqual(len(tags), 1)
demod = tags[0].value
self.assertEqual(demod['Su'], Su)
self.assertAlmostEqual(demod['Mu'], np.sqrt(Pu), places=1)
self.assertEqual(demod['Si1'], Si1)
self.assertAlmostEqual(demod['Mi1'],
np.sqrt(Pi) * (N - ctau) / N,
places=1)
self.assertEqual(demod['Si2'], Si2)
self.assertAlmostEqual(demod['Mi2'], np.sqrt(Pi) * ctau / N, places=1)
def test_003_half_payloads_cfo(self):
print("test_003_half_payloads_cfo")
Su, Si1, Si2 = 21, 0, 10
Pu, Pi = 1.0, 0.5
delta_cfo = -3.5
x_u = np.sqrt(Pu) * lora.gen_sym(SF, Su)
x_i = np.sqrt(Pi) * np.concatenate(
[lora.gen_sym(SF, Si1)[N / 2:N],
lora.gen_sym(SF, Si2)[0:N / 2]])
x = x_u + lora.add_cfo(SF, x_i, delta_cfo)
win_tags = {
0: ('new_window', {
'power1': Pu,
'power2': Pi,
'win_len': N,
'tau': N / 2.0,
'delta_cfo': delta_cfo,
'Tu': SYNC_TYPE_PAYLOAD,
'Ti1': SYNC_TYPE_PAYLOAD,
'Ti2': SYNC_TYPE_PAYLOAD
})
}
y, tags = self._feed_demod(x, win_tags, id=0)
self.assertEqual(len(y), 1)
self.assertEqual(len(tags), 1)
demod = tags[0].value
self.assertEqual(demod['Su'], Su)
self.assertAlmostEqual(demod['Mu'], np.sqrt(Pu), places=2)
self.assertEqual(demod['Si1'], Si1)
self.assertAlmostEqual(demod['Mi1'], np.sqrt(Pi) / 2, places=2)
self.assertEqual(demod['Si2'], Si2)
self.assertAlmostEqual(demod['Mi2'], np.sqrt(Pi) / 2, places=2)
self.assertAlmostEqual(y, i0(Pu) * i0(Pi / 2) * i0(Pi / 2), places=2)