cttc-error-model-comparison.cc

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// Copyright (c) 2019 Centre Tecnologic de Telecomunicacions de Catalunya (CTTC)
//
// SPDX-License-Identifier: GPL-2.0-only
 
#include "ns3/applications-module.h"
#include "ns3/core-module.h"
#include "ns3/ipv4-global-routing-helper.h"
#include "ns3/log.h"
#include "ns3/mobility-module.h"
#include "ns3/nr-module.h"
#include "ns3/nr-point-to-point-epc-helper.h"
#include "ns3/point-to-point-helper.h"
 
using namespace ns3;
 
NS_LOG_COMPONENT_DEFINE("CttcErrorModelComparisonExample");
 
int
main(int argc, char* argv[])
{
    std::string errorModel = "ns3::NrEesmCcT1";
 
    CommandLine cmd(__FILE__);
 
    cmd.AddValue("errorModelType",
                 "Error model type: ns3::NrEesmCcT1, ns3::NrEesmCcT2, ns3::NrEesmIrT1, "
                 "ns3::NrEesmIrT2, ns3::NrLteMiErrorModel",
                 errorModel);
 
    cmd.Parse(argc, argv);
 
    /*
     * TODO: remove all the instances of SetDefault, NrEesmErrorModel, NrAmc
     */
    Config::SetDefault("ns3::NrAmc::ErrorModelType", TypeIdValue(TypeId::LookupByName(errorModel)));
    Config::SetDefault("ns3::NrAmc::AmcModel", EnumValue(NrAmc::ShannonModel));
 
    // Compute number of RBs that fit in 100 MHz channel bandwidth with numerology 4 (240 kHz SCS)
    const uint8_t numerology = 4;
    const uint32_t bandwidth = 100e6;
    const uint32_t numRbsInBandwidth = bandwidth / (15e3 * std::pow(2, numerology) * 12);
 
    Ptr<NrAmc> amc = CreateObject<NrAmc>();
    amc->SetDlMode();
 
    std::string tbs;
    for (uint32_t mcs = 0; mcs <= amc->GetMaxMcs(); ++mcs)
    {
        uint8_t rank{1};
        std::stringstream ss;
        ss << "\nResults for DL (UL only in NR case): MCS " << mcs << ". TBS in 1 RB: ["
           << amc->CalculateTbSize(mcs, rank, 1) << "] bytes. TBS in 1 sym: ["
           << amc->CalculateTbSize(mcs, rank, numRbsInBandwidth) << "] bytes.";
        tbs += ss.str();
    }
 
    std::cout << "NUMEROLOGY 4, 100e6 BANDWIDTH, Error Model: ";
    std::cout << errorModel << ". Results: " << std::endl;
    std::cout << tbs << std::endl;
 
    return 0;
}