def evaluate_esn_1d(dataset, params, runs_per_iteration=1, test_snrs=None):
if len(params.keys()) != 1:
class InvalidParameterDictException(Exception):
pass
raise InvalidParameterDictException(
'1d grid search requires exactly 1 parameter lists')
output = []
param_grid = ParameterGrid(params)
p1 = sorted(params.keys())[0]
# We need the SNR of u/v.
u_train, _, u_test, _ = dataset
for params in param_grid:
print(params)
nrmses = []
test_snrs_t = []
for i in range(runs_per_iteration):
esn = ESN(**params)
nrmses.append(evaluate_esn(dataset, esn))
if test_snrs is not None:
test_snrs_t.append(snr(u_test.var(), esn.v.var()))
v = esn.v
output.append(np.mean(nrmses))
if test_snrs is not None:
test_snrs.append(np.mean(test_snrs_t))
return output
def plot_input_noise_trained(dataset):
# Logspace from 0.001 to 0.14, as 0.14 is an SNR of ~0.0 with NARMA10.
test_noise_std = np.logspace(-2.8239, -0.841, 30)
train_noise_std = np.logspace(-2.8239, -0.841, 30)
params = {
'awgn_test_std': test_noise_std,
'awgn_train_std': train_noise_std,
}
u_train, y_train, u_test, y_test = dataset
print(snr(u_train.var(), min(train_noise_std)**2))
nrmses, stds = evaluate_esn_2d(dataset, params, runs_per_iteration=10)
nrmses = np.array(nrmses).T
sns.heatmap(list(reversed(nrmses)), vmin=0.0, vmax=1.0, square=True)
ax = plt.axes()
# Fix half cells at the top and bottom. This is a current bug in Matplotlib.
ax.set_ylim(ax.get_ylim()[0] + 0.5, 0.0)
x_width = ax.get_xlim()[1]
y_width = ax.get_ylim()[0]
plt.xticks([0.0, 0.5 * x_width, x_width], [40, 20, 0])
plt.yticks([0.0, 0.5 * y_width, y_width], [0, 20, 40])
ax.xaxis.set_ticks_position('none')
ax.yaxis.set_ticks_position('none')
plt.xlabel('Test signal to noise ratio')
plt.ylabel('Train signal to noise ratio')
ax.collections[0].colorbar.set_label('NRMSE')
def update(self):
"""
"""
# update the RBs used by each ue
self._update_ue_rb()
# ---
total_rb_demand = sum(self._rb_map.values())
# IDEAL CASE: we have more RBs than the UEs demand
# == all UEs are satified with their demand
if total_rb_demand < Antenna.BW_RB_MAP[self._cur_ch_bw]:
self._grid.logger.log("op:antenna_good_cap, antenna:" +
str(self) +
", rb_demand:" + str(total_rb_demand) +
", avail_rb:" + str(Antenna.BW_RB_MAP[self._cur_ch_bw]) +
", per_used:" +
str(total_rb_demand/Antenna.BW_RB_MAP[self._cur_ch_bw]) +
", nconnected_ues:" + str(len(self.connected_ues))
)
# --
for ue in self.connected_ues:
ue.tx_rate = ue.demand
# NOT IDEAL CASE: we have less RBs than the UEs demand
# == available RBs split evenly among UEs
else:
# quantity of RBs available
avail_rb = Antenna.BW_RB_MAP[self._cur_ch_bw]
# bivide equaly among all UEs
rb_per_ue = math.floor(avail_rb/len(self.connected_ues))
# set UE tx_rate based
for ue in self.connected_ues:
ue.tx_rate = rb_per_ue * util.snr_to_bit(util.snr(ue, self) )
self._grid.logger.log("op:antenna_bad_cap, antenna:" +
str(self) +
", rb_demand:" + str(total_rb_demand) +
", avail_rb:" + str(Antenna.BW_RB_MAP[self._cur_ch_bw]) +
", per_used:" + str(1.0) +
", nconnected_ues:" + str(len(self.connected_ues))
)
if len(self.connected_ues) != self.prev_n_ues:
if self.prev_n_ues == 0:
self._grid.logger.log("op:antenna_wake_up")
elif len(self.connected_ues) == 0:
self._grid.logger.log("op:antenna_idle")
self.prev_n_ues = len(self.connected_ues)
# Notify BBU that this antenna requires more bandwidth
self._ch_bw_required = self.rb_demand_to_ch_bw(total_rb_demand)
if self._ch_bw_required != self._cur_ch_bw:
self._bbu.event(controller.ANTENNA_BW_UPDATE, self)
def _update_ue_rb(self):
""" Check the total RBs required to satisfy UEs demands
"""
self._rb_map = {}
for ue in self.connected_ues:
# calculate the total RBs for each UE
# mult per 84 because: 84 ofdm symbons in a RB
self._rb_map[ue] = ue.demand / (util.snr_to_bit(util.snr(ue, self, 0)) * 84.0)
def _update_ue_rb(self):
""" Check the total RBs required to satisfy UEs demands
"""
self._rb_map = {}
for ue in self._ues:
# calculate the total RBs for each UE
# mult per 84 because: 84 ofdm symbons in a RB
self._rb_map[ue] = ue.demand / (util.snr_to_bit(util.snr(ue, self, 0)) * 84.0)
def can_fit_ue(self, ue):
# BS always can fit an UE
if self.type == Antenna.BS_ID:
return True
total_rb_demand = sum(self._rb_map.values())
ue_rb_demand = ue.demand / (util.snr_to_bit(util.snr(ue, self, 0)) * 84.0)
if total_rb_demand + ue_rb_demand < Antenna.BW_RB_MAP[self._cur_ch_bw]:
return True
else:
return False
def update(self):
"""
"""
# update the RBs used by each ue
self._update_ue_rb()
# ---
total_rb_demand = sum(self._rb_map.values())
# IDEAL CASE: we have more RBs than the UEs demand
# == all UEs are satified with their demand
if total_rb_demand < Antenna.BW_RB_MAP[self._cur_ch_bw]:
self._grid.logger.log("op:antenna_good_cap, antenna:" +
str(self) +
", rb_demand:" + str(total_rb_demand) +
", avail_rb:" + str(Antenna.BW_RB_MAP[self._cur_ch_bw]) +
", per_used:" +
str(total_rb_demand/Antenna.BW_RB_MAP[self._cur_ch_bw]) +
", n_ues:" + str(len(self._ues))
)
# --
for ue in self._ues:
ue.tx_rate = ue.demand
# NOT IDEAL CASE: we have less RBs than the UEs demand
# == available RBs split evenly among UEs
else:
# quantity of RBs available
avail_rb = Antenna.BW_RB_MAP[self._cur_ch_bw]
# bivide equaly among all UEs
rb_per_ue = math.floor(avail_rb/len(self._ues))
# set UE tx_rate based
for ue in self._ues:
ue.tx_rate = rb_per_ue * util.snr_to_bit(util.snr(ue, self) )
self._grid.logger.log("op:antenna_bad_cap, antenna:" +
str(self) +
", rb_demand:" + str(total_rb_demand) +
", avail_rb:" + str(Antenna.BW_RB_MAP[self._cur_ch_bw]) +
", per_used:" + str(1.0) +
", n_ues:" + str(len(self._ues))
)
# Notify BBU that this antenna requires more bandwidth
self._ch_bw_required = self.rb_demand_to_ch_bw(total_rb_demand)
if self._ch_bw_required != self._cur_ch_bw:
self._bbu.event(controller.ANTENNA_BW_UPDATE, self)
def evaluate_esn_2d(dataset, params, runs_per_iteration=1, test_snrs=None):
if len(params.keys()) != 2:
class InvalidParameterDictException(Exception):
pass
raise InvalidParameterDictException(
'2d grid search requires exactly 2 parameter lists')
# We need the SNR of u/v.
u_train, _, u_test, _ = dataset
sorted_params = sorted(params.keys())
p1 = sorted_params[0]
p2 = sorted_params[1]
n_p1, n_p2 = len(params[p1]), len(params[p2])
nrmse_output = [[] for _ in range(n_p1)]
std_output = [[] for _ in range(n_p1)]
for i in range(n_p1):
if test_snrs is not None:
test_snrs.append([])
param_grid = ParameterGrid(params)
for i, params in enumerate(param_grid):
print(params)
p1_i = i // n_p2
nrmses = []
test_snrs_t = []
for i in range(runs_per_iteration):
# (TODO): Change this to return everything instead of passing lists
# to this grid function.
nrmse, esn = eval_esn_with_params(dataset, params)
nrmses.append(nrmse)
if test_snrs is not None:
test_snrs_t.append(snr(u_test.var(), esn.v.var()))
v = esn.v
nrmse_output[p1_i].append(np.mean(nrmses))
std_output[p1_i].append(np.std(nrmses))
if test_snrs is not None:
test_snrs[p1_i].append(np.mean(test_snrs_t))
# (TODO): Return a dict of different metrics that includes SNR.
return nrmse_output, std_output
