# Copyright (c) IMToolkit Development Team
# This toolkit is released under the MIT License, see LICENSE.txt
import re
[docs]class Parameters(object):
"""This class is used to pack various simulation parameters into an instance."""
arg = ""
table = {}
# default parameters
M = 1 # Number of transmit antennas or subcarriers
N = 1 # Number of receive antennas
T = 1 # Number of timeslots in a space-time codeword
Q = 1 # Number of dispersion matrices or active indices
P = 1 # Number of selected elements
K = 1 # Number of selected elements
O = 1 # Number of embedded symbols in a space-time codeword
IT = 1 # Number of iterations
ITo = 1 # Number of outer iterations
ITi = 1 # Number of inner iterations
snrfrom = 0.0 # The beginning of SNR
to = 50.0 # The end of SNR
len = 11 # The above SNR range is divided by len
by = 1.0 # SNR step size
optsnr = snr = 0.0 # A specific SNR
sim = "coh" # Type of simulator
channel = "rayleigh" # Channel environment
mod = "PSK" # Type of modulation such as PAM, PSK, QAM...
L = 2 # Number of constellation
RC = 1 # The number of repetition
# other parameters (avoid pylint errors)
Nsc = 0 # Number of subcarriers
Ncp = 0 # CP length
Ns = 0 # Number of scatters in Jakes channel model
Nt = Nr = Mt = Mr = Nu = NRF = Lc = 0
W = R = Wl = J = PsiHalf = PhiHalf = deg = 0
taps = mind = hit = limit = Hflu = 0
a = d = r = v = u1 = u2 = alpha = rate = 0.0
dTx = 0.0 # Space between source antennas or LEDs
Rx = 0.0 # Horizontal position of a receiver
FdTs = 0.0 # Normalized Doppler frequency in Jakes channel model
delta = Herr = cfo = 0.0
Kf = Dt = Dr = 0.0
dm = "" # Type of dispersion matrices or active indices
dec = code = Wmode = Fmode = dmi = ""
det = basis = CR = option = ""
minh = 0
def __init__(self, arg):
"""
Args:
arg (string): the specified simulation parameters.
"""
self.arg = arg
options = arg.split("_")
if "=" in options[0]:
self.mode = ""
else:
self.mode = options.pop(0)
self.table["mode"] = self.mode
self.__setattr__("mode", self.mode)
# parse arguments such as "M=2"
for op in options:
pair = op.split("=")
pv = self.parseValue(pair[1])
self.table[pair[0]] = pv
self.__setattr__(pair[0], pv)
# def __setattr__(self, key, value):
# self.table[key] = value
# print(self.table)
# return super(Parameters, self).__setattr__(key, value)
def __getitem__(self, key):
if key in self.table:
return self.table[key]
else:
return False
[docs] def isSpeficied(self, key):
if key in self.table:
return True
else:
return False
[docs] def parseValue(self, value):
if re.match(r'-*\d+', value):
if value.find("e") > 0:
return int(float(value)) # e.g. IT=1e5, IT=2.5e7
elif value.find(".") > 0:
return float(value) # e.g. to=50.00
else:
return int(value) # e.g. M=4
else:
return value # e.g. channel=rayleigh
