/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2010 TELEMATICS LAB, DEE - Politecnico di Bari
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Original Author: Giuseppe Piro  <g.piro@poliba.it>
 * Modified by:     Marco Miozzo   <mmiozzo@cttc.es>
 *                  Nicola Baldo   <nbaldo@cttc.es>
 */


#include <ns3/lte-amc.h>
#include <ns3/log.h>
#include <ns3/assert.h>
#include <ns3/math.h>
#include <vector>
#include <ns3/spectrum-value.h>
#include <ns3/double.h>
#include "ns3/enum.h"
#include <ns3/lte-mi-error-model.h>


NS_LOG_COMPONENT_DEFINE ("LteAmc");

namespace ns3 {

NS_OBJECT_ENSURE_REGISTERED (LteAmc);

// from 3GPP R1-081483 "Conveying MCS and TB size via PDCCH"
// file TBS_support.xls
// tab "MCS table" (rounded to 2 decimal digits)
// the index in the vector (0-15) identifies the CQI value
double SpectralEfficiencyForCqi[16] = {
  0.0, // out of range
  0.15, 0.23, 0.38, 0.6, 0.88, 1.18,
  1.48, 1.91, 2.41,
  2.73, 3.32, 3.9, 4.52, 5.12, 5.55
};


// Table 7.1.7.1-1 of 3GPP TS 36.213 v8.8.0
// the index in the vector (range 0-31; valid values 0-28) identifies the MCS index
// note that this is similar to the one in R1-081483 but:
//  1) a few values are different
//  2) in R1-081483, a valid MCS index is in the range 1-30 (not 0-28)
int ModulationSchemeForMcs[32] = {
  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 
  4, 4, 4, 4, 4, 4, 4,
  6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
  2,  // reserved
  4,  // reserved
  6,  // reserved
};


// from 3GPP R1-081483 "Conveying MCS and TB size via PDCCH"
// file TBS_support.xls
// tab "MCS table" (rounded to 2 decimal digits)
// the index in the table corresponds to the MCS index according to the convention in TS 36.213
// (i.e., the MCS index reported in R1-081483 minus one)
double SpectralEfficiencyForMcs[32] = {
  0.15, 0.19, 0.23, 0.31, 0.38, 0.49, 0.6, 0.74, 0.88, 1.03, 1.18,
  1.33, 1.48, 1.7, 1.91, 2.16, 2.41, 2.57,
  2.73, 3.03, 3.32, 3.61, 3.9, 4.21, 4.52, 4.82, 5.12, 5.33, 5.55,
  0, 0, 0
};

// Table 7.1.7.1-1 of 3GPP TS 36.213 v8.8.0
int McsToItbs[29] = {
  0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 9, 10, 11, 12, 13, 14, 15, 15, 16, 17, 18,
  19, 20, 21, 22, 23, 24, 25, 26
};


// 3GPP TS 36.213 v8.8.0 Table 7.1.7.2.1-1: Transport block size table (dimension 27×110)
// for NPRB = 1 and Itbs = 6 the stadard returns 328, but it not consisent with the
// other values, therefore we used 88 obtained following the sequence of NPRB = 1 values
int TransportBlockSizeTable [110][27] = {

  /* NPRB 001*/
  { 16, 24, 32, 40, 56, 72, 88, 104, 120, 136, 144, 176, 208, 224, 256, 280, 328, 336, 376, 408, 440, 488, 520, 552, 584, 616, 712},
  /* NPRB 002*/ { 32, 56, 72, 104, 120, 144, 176, 224, 256, 296, 328, 376, 440, 488, 552, 600, 632, 696, 776, 840, 904, 1000, 1064, 1128, 1192, 1256, 1480},
  /* NPRB 003*/ { 56, 88, 144, 176, 208, 224, 256, 328, 392, 456, 504, 584, 680, 744, 840, 904, 968, 1064, 1160, 1288, 1384, 1480, 1608, 1736, 1800, 1864, 2216},
  /* NPRB 004*/ { 88, 144, 176, 208, 256, 328, 392, 472, 536, 616, 680, 776, 904, 1000, 1128, 1224, 1288, 1416, 1544, 1736, 1864, 1992, 2152, 2280, 2408, 2536, 2984},
  /* NPRB 005*/ { 120, 176, 208, 256, 328, 424, 504, 584, 680, 776, 872, 1000, 1128, 1256, 1416, 1544, 1608, 1800, 1992, 2152, 2344, 2472, 2664, 2856, 2984, 3112, 3752},
  /* NPRB 006*/ { 152, 208, 256, 328, 408, 504, 600, 712, 808, 936, 1032, 1192, 1352, 1544, 1736, 1800, 1928, 2152, 2344, 2600, 2792, 2984, 3240, 3496, 3624, 3752, 4392},
  /* NPRB 007*/ { 176, 224, 296, 392, 488, 600, 712, 840, 968, 1096, 1224, 1384, 1608, 1800, 1992, 2152, 2280, 2536, 2792, 2984, 3240, 3496, 3752, 4008, 4264, 4392, 5160},
  /* NPRB 008*/ { 208, 256, 328, 440, 552, 680, 808, 968, 1096, 1256, 1384, 1608, 1800, 2024, 2280, 2472, 2600, 2856, 3112, 3496, 3752, 4008, 4264, 4584, 4968, 5160, 5992},
  /* NPRB 009*/ { 224, 328, 376, 504, 632, 776, 936, 1096, 1256, 1416, 1544, 1800, 2024, 2280, 2600, 2728, 2984, 3240, 3624, 3880, 4136, 4584, 4776, 5160, 5544, 5736, 6712},
  /* NPRB 010*/ { 256, 344, 424, 568, 696, 872, 1032, 1224, 1384, 1544, 1736, 2024, 2280, 2536, 2856, 3112, 3240, 3624, 4008, 4264, 4584, 4968, 5352, 5736, 5992, 6200, 7480},
  /* NPRB 011*/ { 288, 376, 472, 616, 776, 968, 1128, 1320, 1544, 1736, 1928, 2216, 2472, 2856, 3112, 3368, 3624, 4008, 4392, 4776, 5160, 5544, 5992, 6200, 6712, 6968, 8248},
  /* NPRB 012*/ { 328, 424, 520, 680, 840, 1032, 1224, 1480, 1672, 1864, 2088, 2408, 2728, 3112, 3496, 3624, 3880, 4392, 4776, 5160, 5544, 5992, 6456, 6968, 7224, 7480, 8760},
  /* NPRB 013*/ { 344, 456, 568, 744, 904, 1128, 1352, 1608, 1800, 2024, 2280, 2600, 2984, 3368, 3752, 4008, 4264, 4776, 5160, 5544, 5992, 6456, 6968, 7480, 7992, 8248, 9528},
  /* NPRB 014*/ { 376, 488, 616, 808, 1000, 1224, 1480, 1672, 1928, 2216, 2472, 2792, 3240, 3624, 4008, 4264, 4584, 5160, 5544, 5992, 6456, 6968, 7480, 7992, 8504, 8760, 10296},
  /* NPRB 015*/ { 392, 520, 648, 872, 1064, 1320, 1544, 1800, 2088, 2344, 2664, 2984, 3368, 3880, 4264, 4584, 4968, 5352, 5992, 6456, 6968, 7480, 7992, 8504, 9144, 9528, 11064},
  /* NPRB 016*/ { 424, 568, 696, 904, 1128, 1384, 1672, 1928, 2216, 2536, 2792, 3240, 3624, 4136, 4584, 4968, 5160, 5736, 6200, 6968, 7480, 7992, 8504, 9144, 9912, 10296, 11832},
  /* NPRB 017*/ { 456, 600, 744, 968, 1192, 1480, 1736, 2088, 2344, 2664, 2984, 3496, 3880, 4392, 4968, 5160, 5544, 6200, 6712, 7224, 7992, 8504, 9144, 9912, 10296, 10680, 12576},
  /* NPRB 018*/ { 488, 632, 776, 1032, 1288, 1544, 1864, 2216, 2536, 2856, 3112, 3624, 4136, 4584, 5160, 5544, 5992, 6456, 7224, 7736, 8248, 9144, 9528, 10296, 11064, 11448, 13536},
  /* NPRB 019*/ { 504, 680, 840, 1096, 1352, 1672, 1992, 2344, 2664, 2984, 3368, 3880, 4392, 4968, 5544, 5736, 6200, 6712, 7480, 8248, 8760, 9528, 10296, 11064, 11448, 12216, 14112},
  /* NPRB 020*/ { 536, 712, 872, 1160, 1416, 1736, 2088, 2472, 2792, 3112, 3496, 4008, 4584, 5160, 5736, 6200, 6456, 7224, 7992, 8504, 9144, 9912, 10680, 11448, 12216, 12576, 14688},
  /* NPRB 021*/ { 568, 744, 936, 1224, 1480, 1864, 2216, 2536, 2984, 3368, 3752, 4264, 4776, 5352, 5992, 6456, 6712, 7480, 8248, 9144, 9912, 10680, 11448, 12216, 12960, 13536, 15264},
  /* NPRB 022*/ { 600, 776, 968, 1256, 1544, 1928, 2280, 2664, 3112, 3496, 3880, 4392, 4968, 5736, 6200, 6712, 7224, 7992, 8760, 9528, 10296, 11064, 11832, 12576, 13536, 14112, 16416},
  /* NPRB 023*/ { 616, 808, 1000, 1320, 1608, 2024, 2408, 2792, 3240, 3624, 4008, 4584, 5352, 5992, 6456, 6968, 7480, 8248, 9144, 9912, 10680, 11448, 12576, 12960, 14112, 14688, 16992},
  /* NPRB 024*/ { 648, 872, 1064, 1384, 1736, 2088, 2472, 2984, 3368, 3752, 4264, 4776, 5544, 6200, 6968, 7224, 7736, 8760, 9528, 10296, 11064, 12216, 12960, 13536, 14688, 15264, 17568},
  /* NPRB 025*/ { 680, 904, 1096, 1416, 1800, 2216, 2600, 3112, 3496, 4008, 4392, 4968, 5736, 6456, 7224, 7736, 7992, 9144, 9912, 10680, 11448, 12576, 13536, 14112, 15264, 15840, 18336},
  /* NPRB 026*/ { 712, 936, 1160, 1480, 1864, 2280, 2728, 3240, 3624, 4136, 4584, 5352, 5992, 6712, 7480, 7992, 8504, 9528, 10296, 11064, 12216, 12960, 14112, 14688, 15840, 16416, 19080},
  /* NPRB 027*/ { 744, 968, 1192, 1544, 1928, 2344, 2792, 3368, 3752, 4264, 4776, 5544, 6200, 6968, 7736, 8248, 8760, 9912, 10680, 11448, 12576, 13536, 14688, 15264, 16416, 16992, 19848},
  /* NPRB 028*/ { 776, 1000, 1256, 1608, 1992, 2472, 2984, 3368, 3880, 4392, 4968, 5736, 6456, 7224, 7992, 8504, 9144, 10296, 11064, 12216, 12960, 14112, 15264, 15840, 16992, 17568, 20616},
  /* NPRB 029*/ { 776, 1032, 1288, 1672, 2088, 2536, 2984, 3496, 4008, 4584, 5160, 5992, 6712, 7480, 8248, 8760, 9528, 10296, 11448, 12576, 13536, 14688, 15840, 16416, 17568, 18336, 21384},
  /* NPRB 030*/ { 808, 1064, 1320, 1736, 2152, 2664, 3112, 3624, 4264, 4776, 5352, 5992, 6712, 7736, 8504, 9144, 9912, 10680, 11832, 12960, 14112, 15264, 16416, 16992, 18336, 19080, 22152},
  /* NPRB 031*/ { 840, 1128, 1384, 1800, 2216, 2728, 3240, 3752, 4392, 4968, 5544, 6200, 6968, 7992, 8760, 9528, 9912, 11064, 12216, 13536, 14688, 15840, 16992, 17568, 19080, 19848, 22920},
  /* NPRB 032*/ { 872, 1160, 1416, 1864, 2280, 2792, 3368, 3880, 4584, 5160, 5736, 6456, 7224, 8248, 9144, 9912, 10296, 11448, 12576, 13536, 14688, 15840, 16992, 18336, 19848, 20616, 23688},
  /* NPRB 033*/ { 904, 1192, 1480, 1928, 2344, 2856, 3496, 4008, 4584, 5160, 5736, 6712, 7480, 8504, 9528, 10296, 10680, 11832, 12960, 14112, 15264, 16416, 17568, 19080, 19848, 20616, 24496},
  /* NPRB 034*/ { 936, 1224, 1544, 1992, 2408, 2984, 3496, 4136, 4776, 5352, 5992, 6968, 7736, 8760, 9912, 10296, 11064, 12216, 13536, 14688, 15840, 16992, 18336, 19848, 20616, 21384, 25456},
  /* NPRB 035*/ { 968, 1256, 1544, 2024, 2472, 3112, 3624, 4264, 4968, 5544, 6200, 6968, 7992, 9144, 9912, 10680, 11448, 12576, 14112, 15264, 16416, 17568, 19080, 19848, 21384, 22152, 25456},
  /* NPRB 036*/ { 1000, 1288, 1608, 2088, 2600, 3112, 3752, 4392, 4968, 5736, 6200, 7224, 8248, 9144, 10296, 11064, 11832, 12960, 14112, 15264, 16992, 18336, 19080, 20616, 22152, 22920, 26416},
  /* NPRB 037*/ { 1032, 1352, 1672, 2152, 2664, 3240, 3880, 4584, 5160, 5736, 6456, 7480, 8504, 9528, 10680, 11448, 12216, 13536, 14688, 15840, 16992, 18336, 19848, 21384, 22920, 23688, 27376},
  /* NPRB 038*/ { 1032, 1384, 1672, 2216, 2728, 3368, 4008, 4584, 5352, 5992, 6712, 7736, 8760, 9912, 11064, 11832, 12216, 13536, 15264, 16416, 17568, 19080, 20616, 22152, 22920, 24496, 28336},
  /* NPRB 039*/ { 1064, 1416, 1736, 2280, 2792, 3496, 4136, 4776, 5544, 6200, 6712, 7736, 8760, 9912, 11064, 11832, 12576, 14112, 15264, 16992, 18336, 19848, 21384, 22152, 23688, 24496, 29296},
  /* NPRB 040*/ { 1096, 1416, 1800, 2344, 2856, 3496, 4136, 4968, 5544, 6200, 6968, 7992, 9144, 10296, 11448, 12216, 12960, 14688, 15840, 16992, 18336, 19848, 21384, 22920, 24496, 25456, 29296},
  /* NPRB 041*/ { 1128, 1480, 1800, 2408, 2984, 3624, 4264, 4968, 5736, 6456, 7224, 8248, 9528, 10680, 11832, 12576, 13536, 14688, 16416, 17568, 19080, 20616, 22152, 23688, 25456, 26416, 30576},
  /* NPRB 042*/ { 1160, 1544, 1864, 2472, 2984, 3752, 4392, 5160, 5992, 6712, 7480, 8504, 9528, 10680, 12216, 12960, 13536, 15264, 16416, 18336, 19848, 21384, 22920, 24496, 25456, 26416, 30576},
  /* NPRB 043*/ { 1192, 1544, 1928, 2536, 3112, 3752, 4584, 5352, 5992, 6712, 7480, 8760, 9912, 11064, 12216, 12960, 14112, 15264, 16992, 18336, 19848, 21384, 22920, 24496, 26416, 27376, 31704},
  /* NPRB 044*/ { 1224, 1608, 1992, 2536, 3112, 3880, 4584, 5352, 6200, 6968, 7736, 8760, 9912, 11448, 12576, 13536, 14112, 15840, 17568, 19080, 20616, 22152, 23688, 25456, 26416, 28336, 32856},
  /* NPRB 045*/ { 1256, 1608, 2024, 2600, 3240, 4008, 4776, 5544, 6200, 6968, 7992, 9144, 10296, 11448, 12960, 13536, 14688, 16416, 17568, 19080, 20616, 22920, 24496, 25456, 27376, 28336, 32856},
  /* NPRB 046*/ { 1256, 1672, 2088, 2664, 3240, 4008, 4776, 5736, 6456, 7224, 7992, 9144, 10680, 11832, 12960, 14112, 14688, 16416, 18336, 19848, 21384, 22920, 24496, 26416, 28336, 29296, 34008},
  /* NPRB 047*/ { 1288, 1736, 2088, 2728, 3368, 4136, 4968, 5736, 6456, 7480, 8248, 9528, 10680, 12216, 13536, 14688, 15264, 16992, 18336, 20616, 22152, 23688, 25456, 27376, 28336, 29296, 35160},
  /* NPRB 048*/ { 1320, 1736, 2152, 2792, 3496, 4264, 4968, 5992, 6712, 7480, 8504, 9528, 11064, 12216, 13536, 14688, 15840, 17568, 19080, 20616, 22152, 24496, 25456, 27376, 29296, 30576, 35160},
  /* NPRB 049*/ { 1352, 1800, 2216, 2856, 3496, 4392, 5160, 5992, 6968, 7736, 8504, 9912, 11064, 12576, 14112, 15264, 15840, 17568, 19080, 21384, 22920, 24496, 26416, 28336, 29296, 31704, 36696},
  /* NPRB 050*/ { 1384, 1800, 2216, 2856, 3624, 4392, 5160, 6200, 6968, 7992, 8760, 9912, 11448, 12960, 14112, 15264, 16416, 18336, 19848, 21384, 22920, 25456, 27376, 28336, 30576, 31704, 36696},
  /* NPRB 051*/ { 1416, 1864, 2280, 2984, 3624, 4584, 5352, 6200, 7224, 7992, 9144, 10296, 11832, 12960, 14688, 15840, 16416, 18336, 19848, 22152, 23688, 25456, 27376, 29296, 31704, 32856, 37888},
  /* NPRB 052*/ { 1416, 1864, 2344, 2984, 3752, 4584, 5352, 6456, 7224, 8248, 9144, 10680, 11832, 13536, 14688, 15840, 16992, 19080, 20616, 22152, 24496, 26416, 28336, 29296, 31704, 32856, 37888},
  /* NPRB 053*/ { 1480, 1928, 2344, 3112, 3752, 4776, 5544, 6456, 7480, 8248, 9144, 10680, 12216, 13536, 15264, 16416, 16992, 19080, 21384, 22920, 24496, 26416, 28336, 30576, 32856, 34008, 39232},
  /* NPRB 054*/ { 1480, 1992, 2408, 3112, 3880, 4776, 5736, 6712, 7480, 8504, 9528, 11064, 12216, 14112, 15264, 16416, 17568, 19848, 21384, 22920, 25456, 27376, 29296, 30576, 32856, 34008, 40576},
  /* NPRB 055*/ { 1544, 1992, 2472, 3240, 4008, 4776, 5736, 6712, 7736, 8760, 9528, 11064, 12576, 14112, 15840, 16992, 17568, 19848, 22152, 23688, 25456, 27376, 29296, 31704, 34008, 35160, 40576},
  /* NPRB 056*/ { 1544, 2024, 2536, 3240, 4008, 4968, 5992, 6712, 7736, 8760, 9912, 11448, 12576, 14688, 15840, 16992, 18336, 20616, 22152, 24496, 26416, 28336, 30576, 31704, 34008, 35160, 40576},
  /* NPRB 057*/ { 1608, 2088, 2536, 3368, 4136, 4968, 5992, 6968, 7992, 9144, 9912, 11448, 12960, 14688, 16416, 17568, 18336, 20616, 22920, 24496, 26416, 28336, 30576, 32856, 35160, 36696, 42368},
  /* NPRB 058*/ { 1608, 2088, 2600, 3368, 4136, 5160, 5992, 6968, 7992, 9144, 10296, 11832, 12960, 14688, 16416, 17568, 19080, 20616, 22920, 25456, 27376, 29296, 31704, 32856, 35160, 36696, 42368},
  /* NPRB 059*/ { 1608, 2152, 2664, 3496, 4264, 5160, 6200, 7224, 8248, 9144, 10296, 11832, 13536, 15264, 16992, 18336, 19080, 21384, 23688, 25456, 27376, 29296, 31704, 34008, 36696, 37888, 43816},
  /* NPRB 060*/ { 1672, 2152, 2664, 3496, 4264, 5352, 6200, 7224, 8504, 9528, 10680, 12216, 13536, 15264, 16992, 18336, 19848, 21384, 23688, 25456, 28336, 30576, 32856, 34008, 36696, 37888, 43816},
  /* NPRB 061*/ { 1672, 2216, 2728, 3624, 4392, 5352, 6456, 7480, 8504, 9528, 10680, 12216, 14112, 15840, 17568, 18336, 19848, 22152, 24496, 26416, 28336, 30576, 32856, 35160, 36696, 39232, 45352},
  /* NPRB 062*/ { 1736, 2280, 2792, 3624, 4392, 5544, 6456, 7480, 8760, 9912, 11064, 12576, 14112, 15840, 17568, 19080, 19848, 22152, 24496, 26416, 29296, 31704, 34008, 35160, 37888, 39232, 45352},
  /* NPRB 063*/ { 1736, 2280, 2856, 3624, 4584, 5544, 6456, 7736, 8760, 9912, 11064, 12576, 14112, 16416, 18336, 19080, 20616, 22920, 24496, 27376, 29296, 31704, 34008, 36696, 37888, 40576, 46888},
  /* NPRB 064*/ { 1800, 2344, 2856, 3752, 4584, 5736, 6712, 7736, 9144, 10296, 11448, 12960, 14688, 16416, 18336, 19848, 20616, 22920, 25456, 27376, 29296, 31704, 34008, 36696, 39232, 40576, 46888},
  /* NPRB 065*/ { 1800, 2344, 2856, 3752, 4584, 5736, 6712, 7992, 9144, 10296, 11448, 12960, 14688, 16992, 18336, 19848, 21384, 23688, 25456, 28336, 30576, 32856, 35160, 37888, 39232, 40576, 48936},
  /* NPRB 066*/ { 1800, 2408, 2984, 3880, 4776, 5736, 6968, 7992, 9144, 10296, 11448, 13536, 15264, 16992, 19080, 20616, 21384, 23688, 26416, 28336, 30576, 32856, 35160, 37888, 40576, 42368, 48936},
  /* NPRB 067*/ { 1864, 2472, 2984, 3880, 4776, 5992, 6968, 8248, 9528, 10680, 11832, 13536, 15264, 16992, 19080, 20616, 22152, 24496, 26416, 29296, 31704, 34008, 36696, 37888, 40576, 42368, 48936},
  /* NPRB 068*/ { 1864, 2472, 3112, 4008, 4968, 5992, 6968, 8248, 9528, 10680, 11832, 13536, 15264, 17568, 19848, 20616, 22152, 24496, 27376, 29296, 31704, 34008, 36696, 39232, 42368, 43816, 51024},
  /* NPRB 069*/ { 1928, 2536, 3112, 4008, 4968, 5992, 7224, 8504, 9528, 11064, 12216, 14112, 15840, 17568, 19848, 21384, 22152, 24496, 27376, 29296, 31704, 35160, 36696, 39232, 42368, 43816, 51024},
  /* NPRB 070*/ { 1928, 2536, 3112, 4136, 4968, 6200, 7224, 8504, 9912, 11064, 12216, 14112, 15840, 18336, 19848, 21384, 22920, 25456, 27376, 30576, 32856, 35160, 37888, 40576, 42368, 43816, 52752},
  /* NPRB 071*/ { 1992, 2600, 3240, 4136, 5160, 6200, 7480, 8760, 9912, 11064, 12576, 14112, 16416, 18336, 20616, 22152, 22920, 25456, 28336, 30576, 32856, 35160, 37888, 40576, 43816, 45352, 52752},
  /* NPRB 072*/ { 1992, 2600, 3240, 4264, 5160, 6200, 7480, 8760, 9912, 11448, 12576, 14688, 16416, 18336, 20616, 22152, 23688, 26416, 28336, 30576, 34008, 36696, 39232, 40576, 43816, 45352, 52752},
  /* NPRB 073*/ { 2024, 2664, 3240, 4264, 5160, 6456, 7736, 8760, 10296, 11448, 12960, 14688, 16416, 19080, 20616, 22152, 23688, 26416, 29296, 31704, 34008, 36696, 39232, 42368, 45352, 46888, 55056},
  /* NPRB 074*/ { 2088, 2728, 3368, 4392, 5352, 6456, 7736, 9144, 10296, 11832, 12960, 14688, 16992, 19080, 21384, 22920, 24496, 26416, 29296, 31704, 34008, 36696, 40576, 42368, 45352, 46888, 55056},
  /* NPRB 075*/ { 2088, 2728, 3368, 4392, 5352, 6712, 7736, 9144, 10680, 11832, 12960, 15264, 16992, 19080, 21384, 22920, 24496, 27376, 29296, 32856, 35160, 37888, 40576, 43816, 45352, 46888, 55056},
  /* NPRB 076*/ { 2088, 2792, 3368, 4392, 5544, 6712, 7992, 9144, 10680, 11832, 13536, 15264, 17568, 19848, 22152, 23688, 24496, 27376, 30576, 32856, 35160, 37888, 40576, 43816, 46888, 48936, 55056},
  /* NPRB 077*/ { 2152, 2792, 3496, 4584, 5544, 6712, 7992, 9528, 10680, 12216, 13536, 15840, 17568, 19848, 22152, 23688, 25456, 27376, 30576, 32856, 35160, 39232, 42368, 43816, 46888, 48936, 57336},
  /* NPRB 078*/ { 2152, 2856, 3496, 4584, 5544, 6968, 8248, 9528, 11064, 12216, 13536, 15840, 17568, 19848, 22152, 23688, 25456, 28336, 30576, 34008, 36696, 39232, 42368, 45352, 46888, 48936, 57336},
  /* NPRB 079*/ { 2216, 2856, 3496, 4584, 5736, 6968, 8248, 9528, 11064, 12576, 14112, 15840, 18336, 20616, 22920, 24496, 25456, 28336, 31704, 34008, 36696, 39232, 42368, 45352, 48936, 51024, 57336},
  /* NPRB 080*/ { 2216, 2856, 3624, 4776, 5736, 6968, 8248, 9912, 11064, 12576, 14112, 16416, 18336, 20616, 22920, 24496, 26416, 29296, 31704, 34008, 36696, 40576, 43816, 45352, 48936, 51024, 59256},
  /* NPRB 081*/ { 2280, 2984, 3624, 4776, 5736, 7224, 8504, 9912, 11448, 12960, 14112, 16416, 18336, 20616, 22920, 24496, 26416, 29296, 31704, 35160, 37888, 40576, 43816, 46888, 48936, 51024, 59256},
  /* NPRB 082*/ { 2280, 2984, 3624, 4776, 5992, 7224, 8504, 9912, 11448, 12960, 14688, 16416, 19080, 21384, 23688, 25456, 26416, 29296, 32856, 35160, 37888, 40576, 43816, 46888, 51024, 52752, 59256},
  /* NPRB 083*/ { 2280, 2984, 3752, 4776, 5992, 7224, 8760, 10296, 11448, 12960, 14688, 16992, 19080, 21384, 23688, 25456, 27376, 30576, 32856, 35160, 39232, 42368, 45352, 46888, 51024, 52752, 61664},
  /* NPRB 084*/ { 2344, 3112, 3752, 4968, 5992, 7480, 8760, 10296, 11832, 13536, 14688, 16992, 19080, 21384, 24496, 25456, 27376, 30576, 32856, 36696, 39232, 42368, 45352, 48936, 51024, 52752, 61664},
  /* NPRB 085*/ { 2344, 3112, 3880, 4968, 5992, 7480, 8760, 10296, 11832, 13536, 14688, 16992, 19080, 22152, 24496, 26416, 27376, 30576, 34008, 36696, 39232, 42368, 45352, 48936, 52752, 55056, 61664},
  /* NPRB 086*/ { 2408, 3112, 3880, 4968, 6200, 7480, 9144, 10680, 12216, 13536, 15264, 17568, 19848, 22152, 24496, 26416, 28336, 30576, 34008, 36696, 40576, 43816, 46888, 48936, 52752, 55056, 63776},
  /* NPRB 087*/ { 2408, 3240, 3880, 5160, 6200, 7736, 9144, 10680, 12216, 13536, 15264, 17568, 19848, 22152, 25456, 26416, 28336, 31704, 34008, 37888, 40576, 43816, 46888, 51024, 52752, 55056, 63776},
  /* NPRB 088*/ { 2472, 3240, 4008, 5160, 6200, 7736, 9144, 10680, 12216, 14112, 15264, 17568, 19848, 22920, 25456, 27376, 28336, 31704, 35160, 37888, 40576, 43816, 46888, 51024, 52752, 55056, 63776},
  /* NPRB 089*/ { 2472, 3240, 4008, 5160, 6456, 7736, 9144, 11064, 12576, 14112, 15840, 18336, 20616, 22920, 25456, 27376, 29296, 31704, 35160, 37888, 42368, 45352, 48936, 51024, 55056, 57336, 66592},
  /* NPRB 090*/ { 2536, 3240, 4008, 5352, 6456, 7992, 9528, 11064, 12576, 14112, 15840, 18336, 20616, 22920, 25456, 27376, 29296, 32856, 35160, 39232, 42368, 45352, 48936, 51024, 55056, 57336, 66592},
  /* NPRB 091*/ { 2536, 3368, 4136, 5352, 6456, 7992, 9528, 11064, 12576, 14112, 15840, 18336, 20616, 23688, 26416, 28336, 29296, 32856, 36696, 39232, 42368, 45352, 48936, 52752, 55056, 57336, 66592},
  /* NPRB 092*/ { 2536, 3368, 4136, 5352, 6456, 7992, 9528, 11448, 12960, 14688, 16416, 18336, 21384, 23688, 26416, 28336, 30576, 32856, 36696, 39232, 42368, 46888, 48936, 52752, 57336, 59256, 68808},
  /* NPRB 093*/ { 2600, 3368, 4136, 5352, 6712, 8248, 9528, 11448, 12960, 14688, 16416, 19080, 21384, 23688, 26416, 28336, 30576, 34008, 36696, 40576, 43816, 46888, 51024, 52752, 57336, 59256, 68808},
  /* NPRB 094*/ { 2600, 3496, 4264, 5544, 6712, 8248, 9912, 11448, 12960, 14688, 16416, 19080, 21384, 24496, 27376, 29296, 30576, 34008, 37888, 40576, 43816, 46888, 51024, 55056, 57336, 59256, 68808},
  /* NPRB 095*/ { 2664, 3496, 4264, 5544, 6712, 8248, 9912, 11448, 13536, 15264, 16992, 19080, 21384, 24496, 27376, 29296, 30576, 34008, 37888, 40576, 43816, 46888, 51024, 55056, 57336, 61664, 71112},
  /* NPRB 096*/ { 2664, 3496, 4264, 5544, 6968, 8504, 9912, 11832, 13536, 15264, 16992, 19080, 22152, 24496, 27376, 29296, 31704, 35160, 37888, 40576, 45352, 48936, 51024, 55056, 59256, 61664, 71112},
  /* NPRB 097*/ { 2728, 3496, 4392, 5736, 6968, 8504, 10296, 11832, 13536, 15264, 16992, 19848, 22152, 25456, 28336, 29296, 31704, 35160, 37888, 42368, 45352, 48936, 52752, 55056, 59256, 61664, 71112},
  /* NPRB 098*/ { 2728, 3624, 4392, 5736, 6968, 8760, 10296, 11832, 13536, 15264, 16992, 19848, 22152, 25456, 28336, 30576, 31704, 35160, 39232, 42368, 45352, 48936, 52752, 57336, 59256, 61664, 73712},
  /* NPRB 099*/ { 2728, 3624, 4392, 5736, 6968, 8760, 10296, 12216, 14112, 15840, 17568, 19848, 22920, 25456, 28336, 30576, 31704, 35160, 39232, 42368, 46888, 48936, 52752, 57336, 61664, 63776, 73712},
  /* NPRB 100*/ { 2792, 3624, 4584, 5736, 7224, 8760, 10296, 12216, 14112, 15840, 17568, 19848, 22920, 25456, 28336, 30576, 32856, 36696, 39232, 43816, 46888, 51024, 55056, 57336, 61664, 63776, 75376},
  /* NPRB 101*/ { 2792, 3752, 4584, 5992, 7224, 8760, 10680, 12216, 14112, 15840, 17568, 20616, 22920, 26416, 29296, 30576, 32856, 36696, 40576, 43816, 46888, 51024, 55056, 57336, 61664, 63776, 75376},
  /* NPRB 102*/ { 2856, 3752, 4584, 5992, 7224, 9144, 10680, 12576, 14112, 16416, 18336, 20616, 23688, 26416, 29296, 31704, 32856, 36696, 40576, 43816, 46888, 51024, 55056, 59256, 61664, 63776, 75376},
  /* NPRB 103*/ { 2856, 3752, 4584, 5992, 7480, 9144, 10680, 12576, 14688, 16416, 18336, 20616, 23688, 26416, 29296, 31704, 34008, 36696, 40576, 43816, 48936, 51024, 55056, 59256, 63776, 66592, 75376},
  /* NPRB 104*/ { 2856, 3752, 4584, 5992, 7480, 9144, 10680, 12576, 14688, 16416, 18336, 21384, 23688, 26416, 29296, 31704, 34008, 37888, 40576, 45352, 48936, 52752, 57336, 59256, 63776, 66592, 75376},
  /* NPRB 105*/ { 2984, 3880, 4776, 6200, 7480, 9144, 11064, 12960, 14688, 16416, 18336, 21384, 23688, 27376, 30576, 31704, 34008, 37888, 42368, 45352, 48936, 52752, 57336, 59256, 63776, 66592, 75376},
  /* NPRB 106*/ { 2984, 3880, 4776, 6200, 7480, 9528, 11064, 12960, 14688, 16992, 18336, 21384, 24496, 27376, 30576, 32856, 34008, 37888, 42368, 45352, 48936, 52752, 57336, 61664, 63776, 66592, 75376},
  /* NPRB 107*/ { 2984, 3880, 4776, 6200, 7736, 9528, 11064, 12960, 15264, 16992, 19080, 21384, 24496, 27376, 30576, 32856, 35160, 39232, 42368, 46888, 48936, 52752, 57336, 61664, 66592, 68808, 75376},
  /* NPRB 108*/ { 2984, 4008, 4776, 6200, 7736, 9528, 11448, 12960, 15264, 16992, 19080, 22152, 24496, 27376, 30576, 32856, 35160, 39232, 42368, 46888, 51024, 55056, 59256, 61664, 66592, 68808, 75376},
  /* NPRB 109*/ { 2984, 4008, 4968, 6456, 7736, 9528, 11448, 13536, 15264, 16992, 19080, 22152, 24496, 28336, 31704, 34008, 35160, 39232, 43816, 46888, 51024, 55056, 59256, 61664, 66592, 68808, 75376},
  /* NPRB 110*/ { 3112, 4008, 4968, 6456, 7992, 9528, 11448, 13536, 15264, 17568, 19080, 22152, 25456, 28336, 31704, 34008, 35160, 39232, 43816, 46888, 51024, 55056, 59256, 63776, 66592, 71112, 75376}

};


LteAmc::LteAmc ()
{
}


LteAmc::~LteAmc ()
{ 
}

TypeId
LteAmc::GetTypeId (void)
{
  static TypeId tid = TypeId ("ns3::LteAmc")
  .SetParent<Object> ()
  .AddConstructor<LteAmc> ()
  .AddAttribute ("Ber",
                 "The requested BER in assigning MCS (default is 0.00005).",
                 DoubleValue (0.00005),
                 MakeDoubleAccessor (&LteAmc::m_ber),
                 MakeDoubleChecker<double> ())
  .AddAttribute ("AmcModel",
                "AMC model used to assign CQI",
                 EnumValue (LteAmc::MiErrorModel),
                 MakeEnumAccessor (&LteAmc::m_amcModel),
                 MakeEnumChecker (LteAmc::MiErrorModel, "Vienna",
                                  LteAmc::PiroEW2010, "PiroEW2010"));
  return tid;
}


int
LteAmc::GetCqiFromSpectralEfficiency (double s)
{
  NS_LOG_FUNCTION (s);
  NS_ASSERT_MSG (s >= 0.0, "negative spectral efficiency = " << s);
  int cqi = 0;
  while ((cqi < 15) && (SpectralEfficiencyForCqi[cqi + 1] < s))
    {
      ++cqi;
    }
  NS_LOG_LOGIC ("cqi = " << cqi);
  return cqi;
}


int
LteAmc::GetMcsFromCqi (int cqi)
{
  NS_LOG_FUNCTION (cqi);
  NS_ASSERT_MSG (cqi >= 0 && cqi <= 15, "CQI must be in [0..15] = " << cqi);
  double spectralEfficiency = SpectralEfficiencyForCqi[cqi];
  int mcs = 0;
  while ((mcs < 28) && (SpectralEfficiencyForMcs[mcs + 1] <= spectralEfficiency))
    {
      ++mcs;
    }
  NS_LOG_LOGIC ("mcs = " << mcs);
  return mcs;
}

int
LteAmc::GetTbSizeFromMcs (int mcs, int nprb)
{
  NS_LOG_FUNCTION (mcs);

  NS_ASSERT_MSG (mcs < 29, "MCS=" << mcs);
  NS_ASSERT_MSG (nprb < 111, "NPRB=" << nprb);

  int itbs = McsToItbs[mcs];
  return (TransportBlockSizeTable[nprb - 1][itbs]);
}


double
LteAmc::GetSpectralEfficiencyFromCqi (int cqi)
{
  NS_LOG_FUNCTION (cqi);
  NS_ASSERT_MSG (cqi >= 0 && cqi <= 15, "CQI must be in [0..15] = " << cqi);
  NS_LOG_LOGIC ("Spectral efficiency = " << SpectralEfficiencyForCqi[cqi]);
  return SpectralEfficiencyForCqi[cqi];
}


std::vector<int>
LteAmc::CreateCqiFeedbacks (const SpectrumValue& sinr, uint8_t rbgSize)
{
  NS_LOG_FUNCTION (this);

  std::vector<int> cqi;
  Values::const_iterator it;
  
  if (m_amcModel == PiroEW2010)
    {

      for (it = sinr.ConstValuesBegin (); it != sinr.ConstValuesEnd (); it++)
        {
          double sinr_ = (*it);
          if (sinr_ == 0.0)
            {
              cqi.push_back (-1); // SINR == 0 (linear units) means no signal in this RB
            }
          else
            {
              /*
              * Compute the spectral efficiency from the SINR
              *                                        SINR
              * spectralEfficiency = log2 (1 + -------------------- )
              *                                    -ln(5*BER)/1.5
              * NB: SINR must be expressed in linear units
              */

              double s = log2 ( 1 + ( sinr_ / ( (-std::log (5.0 * m_ber )) / 1.5) ));

              int cqi_ = GetCqiFromSpectralEfficiency (s);

              NS_LOG_LOGIC (" PRB =" << cqi.size ()
                                    << ", sinr = " << sinr_
                                    << " (=" << 10 * std::log10 (sinr_) << " dB)"
                                    << ", spectral efficiency =" << s
                                    << ", CQI = " << cqi_ << ", BER = " << m_ber);

              cqi.push_back (cqi_);
            }
        }
    }
  else if (m_amcModel == MiErrorModel)
    {
      NS_LOG_DEBUG (this << " AMC-VIENNA RBG size " << (uint16_t)rbgSize);
      NS_ASSERT_MSG (rbgSize > 0, " LteAmc-Vienna: RBG size must be greater than 0");
      std::vector <int> rbgMap;
      int rbId = 0;
      for (it = sinr.ConstValuesBegin (); it != sinr.ConstValuesEnd (); it++)
      {
        rbgMap.push_back (rbId++);
        if ((rbId % rbgSize == 0)||((it+1)==sinr.ConstValuesEnd ()))
         {
            uint8_t mcs = 0;
            double ber = 0.0;
            while (mcs < 28)
              {
                ber = LteMiErrorModel::GetTbError (sinr, rbgMap, (uint16_t)GetTbSizeFromMcs (mcs, rbgSize) / 8, mcs);
                if (ber > 0.1)
                  break;
                mcs++;
                
              }
            NS_LOG_DEBUG (this << "\t RBG " << rbId << " MCS " << (uint16_t)mcs << " BER " << ber);
            int rbgCqi = 0;
            if ((ber > 0.1)&&(mcs==0))
              {
                rbgCqi = 0; // any MCS can guarantee the 10 % of BER
              }
            else if (mcs == 28)
              {
                rbgCqi = 15; // all MCSs can guarantee the 10 % of BER
              }
            else
              {
                double s = SpectralEfficiencyForMcs[mcs];
                rbgCqi = 0;
                while ((rbgCqi < 15) && (SpectralEfficiencyForCqi[rbgCqi + 1] < s))
                {
                  ++rbgCqi;
                }
              }
            NS_LOG_DEBUG (this << "\t CQI " << rbgCqi);
            // fill the cqi vector (per RB basis)
            for (uint8_t j = 0; j < rbgSize; j++)
              {
                cqi.push_back (rbgCqi);
              }
            rbgMap.clear ();
         }
        
      }
      
    }

  return cqi;
}

} // namespace ns3
