def HammingCodeDriver():
mode = input("Enter mode: ")
total_bits, num_data_bits = (15, 11) if mode == "H1511" else (7, 4)
message = np.array(helper.generate_random_message(num_data_bits))
print("Message :", message)
x = helper.encodeMessage(G11, message) if total_bits == 15 else helper.encodeMessage(G4, message)
print("Send Vector :", x)
# Create error
helper.generate_error(x, total_bits)
z = helper.generateParityCheckMatrix(H11, x) if total_bits == 15 else helper.generateParityCheckMatrix(H4, x)
print("Received Message :", x)
print("Parity Check :", z)
# Convert to Big endian
z = z[::-1]
if sum(z) == 0:
print("Decoded Message :", helper.decodeMessage(R11, x)) if total_bits == 15 else print("Decoded Message :", helper.decodeMessage(R4, x))
else:
x = helper.errorCorrection(x, z)
print("Corrected Message:", x)
print("Decoded Message :", helper.decodeMessage(R11, x)) if total_bits == 15 else print("Decoded Message :", helper.decodeMessage(R4, x))
def Hamming1511NoError(print_results):
flag = True
for i in range(0, 2048):
flag = True
if print_results: print("Num: ",i)
message = np.array([int(a) for a in list(bin(i)[2:].zfill(11))])
x = helper.encodeMessage(G11, message)
if print_results: print("Message: ",message)
z = helper.generateParityCheckMatrix(H11, x)[::-1]
if print_results: print("Parity: ", z)
if sum(z) == 0:
if message.all() != helper.decodeMessage(R11, x).all():
flag = False
if not flag:
print("Failed Test: ",i)
break
if flag:
print("Hamming(15, 11) No Errors: SUCCESS")
def Hamming1511WithError(print_results):
flag = True
for i in range(0, 2048):
for error_location in range(0,15):
flag = True
if print_results: print("Num: ",i, "Error location: ", error_location)
message = np.array([int(a) for a in list(bin(i)[2:].zfill(11))])
if print_results: print("Message: ",message)
x = helper.encodeMessage(G11, message)
if print_results: print("Syndrome: ", x)
helper.flip_bit(x, error_location)
if print_results: print("Syndrome we: ", x)
z = helper.generateParityCheckMatrix(H11, x)[::-1]
if print_results: print("Parity: ", z)
x = helper.errorCorrection(x, z)
if print_results: print("Fixed Syndrome: ", x)
if sum(z) == 0:
if message.all() != helper.decodeMessage(R11, x).all():
flag = False
if not flag:
print("Failed Test: ",i)
break
if flag:
print("Hamming(15, 11) with Errors: SUCCESS")