def setUp(self):
self.payload = b'0123456789012345678901234567890123456789'
self.packet_bytes = b'\xaa\xaa\xff\xff\xff\xff\xff\xaa\xaa\xaa\xaa' + \
b'\xaa_=0123456789012345678901234567890123456789\x11'
self.packet = dect.Full(self.payload)
self.mutable_bytes = bytearray(self.packet_bytes)
self.mutated_bytes = copy.copy(self.mutable_bytes)
self.mutated_bytes[-1] = 0
self.mutated_bytes[7] = 0
self.mutated_packet = dect.Full.from_bytes(self.mutated_bytes)
def run_sim() -> bool:
# Create random dect packet
payload = os.urandom(40)
data = dect.Full(payload).to_bytes()
# Run through simulation chain
symbols = enc.encode_msb(data)
moded = mod.modulate(symbols)
recv, h = chnl.run(moded)
combined, _ = diversity_technique.selection_from_power(recv)
symbols_hat = mod.demodulate(combined)
data_hat = enc.decode_msb(symbols_hat)
chnl.frame_sent()
# Check it
return dect.Full.from_bytes(data_hat).a_field_crc_error_detected()
# Copyright 2021 Christian Schneider Pedersen <*****@*****.**>, Helene Bach Vistisen, Julian Teule, Mikkel Filt Bengtson, Victor Büttner <*****@*****.**> # # SPDX-License-Identifier: Beerware OR MIT import ad_path from antenna_diversity.channel import channel_models from antenna_diversity.diversity_technique import mrc from antenna_diversity.encoding import SymbolEncoder from antenna_diversity import modulation import numpy as np from antenna_diversity.protocols import dect ad_path.nop() # Create DECT packet payload = b'0123456789012345678901234567890123456789' dect_packet = dect.Full(payload) # Modulate DECT packet my_pam = modulation.PSK(2) my_symbols = SymbolEncoder(2).encode_msb(dect_packet.to_bytes()) modulated_symbols = my_pam.modulate(my_symbols) N = 2 # Creating the channel with N antennas and 10 snr chnl = channel_models.RayleighAWGNChannel(N, 10) r, h = chnl.run(modulated_symbols) print(r) print(h) # Using the diversity scheme and demodulate the signal recv = mrc(r, h)
def test_check_payload_len(self):
with self.assertRaisesRegex(Exception, "payload is not 40 long"):
dect.Full(b'hej')