diff --git a/src/wifi/model/dsss-phy.cc b/src/wifi/model/dsss-phy.cc
index 61a3fc615..c0beac500 100644
--- a/src/wifi/model/dsss-phy.cc
+++ b/src/wifi/model/dsss-phy.cc
@@ -45,6 +45,14 @@ const PhyEntity::PpduFormats DsssPhy::m_dsssPpduFormats {
                            WIFI_PPDU_FIELD_NON_HT_HEADER, //Short PHY header
                            WIFI_PPDU_FIELD_DATA } }
 };
+
+const PhyEntity::ModulationLookupTable DsssPhy::m_dsssModulationLookupTable {
+  // Unique name         Code rate                 Constellation size
+  { "DsssRate1Mbps",   { WIFI_CODE_RATE_UNDEFINED, 2 } },
+  { "DsssRate2Mbps",   { WIFI_CODE_RATE_UNDEFINED, 4 } },
+  { "DsssRate5_5Mbps", { WIFI_CODE_RATE_UNDEFINED, 16 } },
+  { "DsssRate11Mbps",  { WIFI_CODE_RATE_UNDEFINED, 256 } }
+};
 /* *NS_CHECK_STYLE_ON* */
 
 DsssPhy::DsssPhy ()
diff --git a/src/wifi/model/dsss-phy.h b/src/wifi/model/dsss-phy.h
index eec4e5863..ec8ae01c2 100644
--- a/src/wifi/model/dsss-phy.h
+++ b/src/wifi/model/dsss-phy.h
@@ -142,6 +142,8 @@ private:
   PhyFieldRxStatus EndReceiveHeader (Ptr<Event> event);
 
   static const PpduFormats m_dsssPpduFormats; //!< DSSS and HR/DSSS PPDU formats
+
+  static const ModulationLookupTable m_dsssModulationLookupTable; //!< lookup table to retrieve code rate and constellation size corresponding to a unique name of modulation
 }; //class DsssPhy
 
 } //namespace ns3
diff --git a/src/wifi/model/erp-ofdm-phy.cc b/src/wifi/model/erp-ofdm-phy.cc
index 8ae937ec0..f6172c62e 100644
--- a/src/wifi/model/erp-ofdm-phy.cc
+++ b/src/wifi/model/erp-ofdm-phy.cc
@@ -35,6 +35,20 @@ NS_LOG_COMPONENT_DEFINE ("ErpOfdmPhy");
  *       ERP-OFDM PHY (IEEE 802.11-2016, clause 18)
  *******************************************************/
 
+/* *NS_CHECK_STYLE_OFF* */
+const PhyEntity::ModulationLookupTable ErpOfdmPhy::m_erpOfdmModulationLookupTable {
+  // Unique name           Code rate           Constellation size
+  { "ErpOfdmRate6Mbps",  { WIFI_CODE_RATE_1_2, 2 } },
+  { "ErpOfdmRate9Mbps",  { WIFI_CODE_RATE_3_4, 2 } },
+  { "ErpOfdmRate12Mbps", { WIFI_CODE_RATE_1_2, 4 } },
+  { "ErpOfdmRate18Mbps", { WIFI_CODE_RATE_3_4, 4 } },
+  { "ErpOfdmRate24Mbps", { WIFI_CODE_RATE_1_2, 16 } },
+  { "ErpOfdmRate36Mbps", { WIFI_CODE_RATE_3_4, 16 } },
+  { "ErpOfdmRate48Mbps", { WIFI_CODE_RATE_2_3, 64 } },
+  { "ErpOfdmRate54Mbps", { WIFI_CODE_RATE_3_4, 64 } }
+};
+/* *NS_CHECK_STYLE_ON* */
+
 ErpOfdmPhy::ErpOfdmPhy ()
   : OfdmPhy (OFDM_PHY_DEFAULT, false) //don't add OFDM modes to list
 {
diff --git a/src/wifi/model/erp-ofdm-phy.h b/src/wifi/model/erp-ofdm-phy.h
index df13d1f71..6e9e1f38a 100644
--- a/src/wifi/model/erp-ofdm-phy.h
+++ b/src/wifi/model/erp-ofdm-phy.h
@@ -131,6 +131,8 @@ private:
   WifiMode GetHeaderMode (WifiTxVector txVector) const override;
   Time GetPreambleDuration (WifiTxVector txVector) const override;
   Time GetHeaderDuration (WifiTxVector txVector) const override;
+
+  static const ModulationLookupTable m_erpOfdmModulationLookupTable; //!< lookup table to retrieve code rate and constellation size corresponding to a unique name of modulation
 }; //class ErpOfdmPhy
 
 } //namespace ns3
diff --git a/src/wifi/model/ofdm-phy.cc b/src/wifi/model/ofdm-phy.cc
index 2866232f1..541f9c3fa 100644
--- a/src/wifi/model/ofdm-phy.cc
+++ b/src/wifi/model/ofdm-phy.cc
@@ -42,6 +42,34 @@ const PhyEntity::PpduFormats OfdmPhy::m_ofdmPpduFormats {
                           WIFI_PPDU_FIELD_NON_HT_HEADER, //SIG
                           WIFI_PPDU_FIELD_DATA } }
 };
+
+const PhyEntity::ModulationLookupTable OfdmPhy::m_ofdmModulationLookupTable {
+  // Unique name                Code rate           Constellation size
+  { "OfdmRate6Mbps",          { WIFI_CODE_RATE_1_2, 2 } },  // 20 MHz
+  { "OfdmRate9Mbps",          { WIFI_CODE_RATE_3_4, 2 } },  //  |
+  { "OfdmRate12Mbps",         { WIFI_CODE_RATE_1_2, 4 } },  //  V
+  { "OfdmRate18Mbps",         { WIFI_CODE_RATE_3_4, 4 } },
+  { "OfdmRate24Mbps",         { WIFI_CODE_RATE_1_2, 16 } },
+  { "OfdmRate36Mbps",         { WIFI_CODE_RATE_3_4, 16 } },
+  { "OfdmRate48Mbps",         { WIFI_CODE_RATE_2_3, 64 } },
+  { "OfdmRate54Mbps",         { WIFI_CODE_RATE_3_4, 64 } },
+  { "OfdmRate3MbpsBW10MHz",   { WIFI_CODE_RATE_1_2, 2 } },  // 10 MHz
+  { "OfdmRate4_5MbpsBW10MHz", { WIFI_CODE_RATE_3_4, 2 } },  //  |
+  { "OfdmRate6MbpsBW10MHz",   { WIFI_CODE_RATE_1_2, 4 } },  //  V
+  { "OfdmRate9MbpsBW10MHz",   { WIFI_CODE_RATE_3_4, 4 } },
+  { "OfdmRate12MbpsBW10MHz",  { WIFI_CODE_RATE_1_2, 16 } },
+  { "OfdmRate18MbpsBW10MHz",  { WIFI_CODE_RATE_3_4, 16 } },
+  { "OfdmRate24MbpsBW10MHz",  { WIFI_CODE_RATE_2_3, 64 } },
+  { "OfdmRate27MbpsBW10MHz",  { WIFI_CODE_RATE_3_4, 64 } },
+  { "OfdmRate1_5MbpsBW5MHz",  { WIFI_CODE_RATE_1_2, 2 } },  //  5 MHz
+  { "OfdmRate2_25MbpsBW5MHz", { WIFI_CODE_RATE_3_4, 2 } },  //  |
+  { "OfdmRate3MbpsBW5MHz",    { WIFI_CODE_RATE_1_2, 4 } },  //  V
+  { "OfdmRate4_5MbpsBW5MHz",  { WIFI_CODE_RATE_3_4, 4 } },
+  { "OfdmRate6MbpsBW5MHz",    { WIFI_CODE_RATE_1_2, 16 } },
+  { "OfdmRate9MbpsBW5MHz",    { WIFI_CODE_RATE_3_4, 16 } },
+  { "OfdmRate12MbpsBW5MHz",   { WIFI_CODE_RATE_2_3, 64 } },
+  { "OfdmRate13_5MbpsBW5MHz", { WIFI_CODE_RATE_3_4, 64 } }
+};
 /* *NS_CHECK_STYLE_ON* */
 
 OfdmPhy::OfdmPhy (OfdmPhyVariant variant /* = OFDM_PHY_DEFAULT */, bool buildModeList /* = true */)
diff --git a/src/wifi/model/ofdm-phy.h b/src/wifi/model/ofdm-phy.h
index 434ef1b73..bbe0b19bf 100644
--- a/src/wifi/model/ofdm-phy.h
+++ b/src/wifi/model/ofdm-phy.h
@@ -318,6 +318,8 @@ protected:
 
 private:
   static const PpduFormats m_ofdmPpduFormats; //!< OFDM PPDU formats
+
+  static const ModulationLookupTable m_ofdmModulationLookupTable; //!< lookup table to retrieve code rate and constellation size corresponding to a unique name of modulation
 }; //class OfdmPhy
 
 } //namespace ns3
diff --git a/src/wifi/model/phy-entity.h b/src/wifi/model/phy-entity.h
index b74c7bbf1..12f72aa88 100644
--- a/src/wifi/model/phy-entity.h
+++ b/src/wifi/model/phy-entity.h
@@ -468,6 +468,16 @@ protected:
    */
   typedef std::map<WifiPreamble, std::vector<WifiPpduField> > PpduFormats;
 
+  /**
+   * A pair to hold modulation information: code rate and constellation size.
+   */
+  typedef std::pair<WifiCodeRate, uint16_t> CodeRateConstellationSizePair;
+
+  /**
+   * A modulation lookup table using unique name of modulation as key.
+   */
+  typedef std::map<std::string, CodeRateConstellationSizePair> ModulationLookupTable;
+
   /**
    * Return the PPDU formats of the PHY.
    *