diff --git a/sw/utility/encoders.py b/sw/utility/encoders.py
index 06cd1af..f90b387 100644
--- a/sw/utility/encoders.py
+++ b/sw/utility/encoders.py
@@ -22,4 +22,5 @@ class Encoder:
         :param d: Dataword (element of [0, 1]^n)
         :return: Codeword (already element of [-1, 1]^n)
         """
+        # TODO: (0 -> 1), (1 -> -1); Not (0 -> -1), (-1 -> 1)
         return np.dot(d, self._G) * 2 - 1
diff --git a/sw/utility/noise.py b/sw/utility/noise.py
index f7831cd..992b4e8 100644
--- a/sw/utility/noise.py
+++ b/sw/utility/noise.py
@@ -14,6 +14,9 @@ def get_noise_amp_from_SNR(SNR: float, signal_amp: float = 1) -> float:
     SNR_linear = 10 ** (SNR / 10)
     noise_amp = (1 / np.sqrt(SNR_linear)) * signal_amp
 
+    # TODO: Fix noise amp calculation
+    # sigma**2 = 1 / (2 * (k/n) * (E_b/N_0))
+
     return noise_amp
 
 
diff --git a/sw/utility/simulations.py b/sw/utility/simulations.py
index 938cfed..95e210b 100644
--- a/sw/utility/simulations.py
+++ b/sw/utility/simulations.py
@@ -18,6 +18,7 @@ def count_bit_errors(d: np.array, d_hat: np.array) -> int:
     return np.sum(d != d_hat)
 
 
+# TODO: Fix uses of n, k, a everywhere
 def test_decoder(encoder: typing.Any,
                  decoder: typing.Any,
                  d: np.array,