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Add Support for Multiple Antennas #64

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18 changes: 10 additions & 8 deletions CSIKit/reader/readers/read_feitcsi.py
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Original file line number Diff line number Diff line change
Expand Up @@ -169,14 +169,16 @@ def interpolate(self, csi):
amplitude = abs(csi["csi_matrix"])
phase = np.angle(csi["csi_matrix"])
# phase = np.unwrap(phase)
for i in indices:
for j in range(csi["csi_matrix"].shape[1]):
amplitude[i, j] = self.cubicInterpolate(amplitude[i - 2, j], amplitude[i - 1, j], \
amplitude[i + 1, j], amplitude[i + 2, j], 0.5)
phase[i, j] = self.linearInterpolate(phase[i - 1, j], phase[i + 1, j], 0.5)
if phase[i - 1, j] > 2 and phase[i + 1, j] < -2:
phase[i, j] = self.linearInterpolate(phase[i + 1, j], phase[i + 2, j], -1)
csi["csi_matrix"][i, j] = amplitude[i, j] * np.exp(1j * phase[i, j])
for i in indices: # subcarrier_index
for j in range(csi["csi_matrix"].shape[1]): # rx index
for k in range(csi["csi_matrix"].shape[2]): # tx index
amplitude[i, j, k] = self.cubicInterpolate(amplitude[i - 2, j, k], amplitude[i - 1, j, k], \
amplitude[i + 1, j, k], amplitude[i + 2, j, k], 0.5)
phase[i, j, k] = self.linearInterpolate(phase[i - 1, j, k], phase[i + 1, j, k], 0.5)
if phase[i - 1, j, k] > 2 and phase[i + 1, j, k] < -2:
phase[i, j, k] = self.linearInterpolate(phase[i + 1, j, k], phase[i + 2, j, k], -1)

csi["csi_matrix"][i, j, k] = amplitude[i, j, k] * np.exp(1j * phase[i, j, k])
return csi


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