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+# -*- coding: utf-8 -*-
+#
+# DPD Computation Engine, model implementation using polynomial
+#
+# http://www.opendigitalradio.org
+# Licence: The MIT License, see notice at the end of this file
+
+import os
+import logging
+import numpy as np
+
+class Lut:
+ """Implements a model that calculates lookup table coefficients"""
+
+ def __init__(self,
+ c,
+ learning_rate=1.,
+ plot=False):
+ """
+
+ :rtype:
+ """
+ logging.debug("Initialising LUT Model")
+ self.c = c
+ self.learning_rate = learning_rate
+ self.plot = plot
+ self.reset_coefs()
+
+ def reset_coefs(self):
+ self.scalefactor = 0xFFFFFFFF # max uint32_t value
+ self.lut = np.ones(32, dtype=np.complex64)
+
+ def train(self, tx_abs, rx_abs, phase_diff):
+ pass
+
+ def get_dpd_data(self):
+ return "lut", self.scalefactor, self.lut
+
+# The MIT License (MIT)
+#
+# Copyright (c) 2017 Andreas Steger
+# Copyright (c) 2017 Matthias P. Braendli
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.