an.tsouchlos/ba-thesis
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases 1 Wiki Activity

Removed N_max from simulations.test_decoder()

Browse Source
This commit is contained in:
Andreas Tsouchlos 2022-11-11 21:24:56 +01:00
parent 0f8de32e3f
commit 3e02dcf17c
1 changed files with 16 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
sw/utility/simulations.py
View File

@ -22,8 +22,7 @@ def test_decoder(n: int,
k: int,
decoder: typing.Any,
SNRs: typing.Sequence[float] = np.linspace(1, 7, 7),
target_frame_errors: int = 100,
N_max: int = 10000) \
target_frame_errors: int = 100) \
-> typing.Tuple[np.array, np.array]:
"""Calculate the Bit Error Rate (BER) for a given decoder for a number of SNRs.
@ -52,12 +51,13 @@ def test_decoder(n: int,
total_bits = 0
total_frame_errors = 0
for i in tqdm(range(N_max),
desc=f"Simulating for SNR = {SNR} dB",
position=2,
leave=False,
bar_format="{l_bar}{bar}| {n_fmt}/{total_fmt}"):
pbar = tqdm(total=target_frame_errors,
desc=f"Simulating for SNR = {SNR} dB",
position=2,
leave=False,
bar_format="{l_bar}{bar}| {n_fmt}/{total_fmt} [{elapsed}<{remaining}]")
while total_frame_errors < target_frame_errors:
# Simulate channel
y = noise.add_awgn(x_bpsk, SNR, n, k)
@ -65,12 +65,15 @@ def test_decoder(n: int,
x_hat = decoder.decode(y)
# Calculate statistics
total_bit_errors += count_bit_errors(x, x_hat)
bit_errors = count_bit_errors(x, x_hat)
total_bits += x.size
total_frame_errors += 1 if total_bit_errors > 0 else 0
if total_frame_errors >= target_frame_errors:
break
if bit_errors > 0:
total_frame_errors += 1
total_bit_errors += bit_errors
pbar.update(1)
pbar.close()
BERs.append(total_bit_errors / total_bits)
@ -81,8 +84,7 @@ def test_decoders(n: int,
k: int,
decoders: typing.List,
SNRs: typing.Sequence[float] = np.linspace(1, 7, 7),
target_frame_errors: int = 100,
N_max: int = 10000) \
target_frame_errors: int = 100) \
-> typing.Tuple[np.array, np.array]:
"""Calculate the Bit Error Rate (BER) for a number of given decoders for a number of SNRs.
@ -93,7 +95,6 @@ def test_decoders(n: int,
:param decoders: List of decoder objects to be tested
:param SNRs: List of SNRs for which the BER should be calculated
:param target_frame_errors: Number of frame errors after which to stop the simulation
:param N_max: Maximum number of iterations to perform for each SNR
:return: Tuple of the form (SNRs, [BERs_1, BERs_2, ...]) where SNR and BERs_x are numpy arrays
"""
result_BERs = []
@ -105,7 +106,7 @@ def test_decoders(n: int,
position=0,
leave=False,
bar_format="{l_bar}{bar}| {n_fmt}/{total_fmt}"):
_, BERs = test_decoder(n, k, decoder, SNRs, target_frame_errors, N_max)
_, BERs = test_decoder(n, k, decoder, SNRs, target_frame_errors)
result_BERs.append(BERs)
end_time = default_timer()