actually I think it's working but making impulse responses by hand is finnicky

channel.py

@@ -3,7 +3,10 @@ import scipy.interpolate
 
 import matplotlib.pyplot as plt
 
-channel_response = np.array([-1 - 1j, 0, 0, 1, 0, 0, -1 - 1j])
+# Dirac delta function response, no change
+#channel_response = np.array([0, 0, 0, 1, 0, 0, 0])
+channel_response = np.array([0, 0, 1, 0.5, 0.25, 0.125])
+
 
 # How do I sync this across two files?
 # figure it out later

main.py

@@ -59,11 +59,11 @@ if __name__ == '__main__':
 
     ofdm_time = np.fft.ifft(modulated)
 
-    tx = cp_add(ofdm_time, 4)
+    tx = cp_add(ofdm_time, 16)
 
     rx = channel.sim(tx)
 
-    ofdm_cp_removed = cp_remove(rx, 4)
+    ofdm_cp_removed = cp_remove(rx, 16)
 
     to_equalize = np.fft.fft(ofdm_cp_removed)