MOdulation order and code rate

cmake_targets/CMakeLists.txt

@@ -1294,6 +1294,7 @@ set(PHY_SRC_UE
   ${OPENAIR1_DIR}/PHY/NR_TRANSPORT/nr_dci_tools.c
   ${OPENAIR1_DIR}/PHY/NR_TRANSPORT/nr_dlsch.c
   ${OPENAIR1_DIR}/PHY/NR_TRANSPORT/nr_dlsch_tools.c
+  ${OPENAIR1_DIR}/PHY/NR_TRANSPORT/nr_tbs_tools.c
   ${OPENAIR1_DIR}/PHY/NR_REFSIG/nr_gold.c
   ${OPENAIR1_DIR}/PHY/TOOLS/file_output.c
   ${OPENAIR1_DIR}/PHY/TOOLS/cadd_vv.c

openair1/PHY/NR_TRANSPORT/nr_dlsch.h

@@ -46,3 +46,7 @@ void nr_get_rbg_parms(NR_BWP_PARMS* bwp, uint8_t config_type);
 void nr_get_rbg_list(uint32_t bitmap, uint8_t n_rbg, uint8_t* rbg_list);
 
 void nr_get_PRG_parms(NR_BWP_PARMS* bwp, NR_gNB_DCI_ALLOC_t dci_alloc, uint8_t prb_bundling_type);
+
+uint8_t nr_get_Qm(uint8_t Imcs, uint8_t table_idx);
+
+uint32_t nr_get_code_rate(uint8_t Imcs, uint8_t table_idx);

openair1/PHY/NR_TRANSPORT/nr_tbs_tools.c

@@ -0,0 +1,81 @@
+/*
+ * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The OpenAirInterface Software Alliance licenses this file to You under
+ * the OAI Public License, Version 1.0  (the "License"); you may not use this file
+ * except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.openairinterface.org/?page_id=698
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *-------------------------------------------------------------------------------
+ * For more information about the OpenAirInterface (OAI) Software Alliance:
+ *      contact@openairinterface.org
+ */
+
+/*! \file PHY/LTE_TRANSPORT/dlsch_coding.c
+* \brief Top-level routines for implementing LDPC-coded (DLSCH) transport channels from 38-212, 15.2
+* \author H.Wang
+* \date 2018
+* \version 0.1
+* \company Eurecom
+* \email:
+* \note
+* \warning
+*/
+
+#include "nr_dlsch.h"
+
+/// Target code rate tables indexed by Imcs
+uint16_t nr_target_code_rate_table1[29] = {120, 157, 193, 251, 308, 379, 449, 526, 602, 679, 340, 378, 434, 490, 553, \
+                                            616, 658, 438, 466, 517, 567, 616, 666, 719, 772, 822, 873, 910, 948};
+  // The -1 values correspond to non integer factors which are handled differently for indexes 20(682.5) and 26(916.5)
+uint16_t nr_target_code_rate_table2[28] = {120, 193, 308, 449, 602, 378, 434, 490, 553, 616, 658, 466, 517, 567, \
+                                            616, 666, 719, 772, 822, 873, -1, 711, 754, 797, 841, 885, -1, 948};
+uint16_t nr_target_code_rate_table3[29] = {30, 40, 50, 64, 78, 99, 120, 157, 193, 251, 308, 379, 449, 526, 602, 340, \
+                                            378, 434, 490, 553, 616, 438, 466, 517, 567, 616, 666, 719, 772};
+
+
+uint8_t nr_get_Qm(uint8_t Imcs, uint8_t table_idx) {
+  switch(table_idx) {
+    case 1:
+      return (((Imcs<10)||(Imcs==29))?2:((Imcs<17)||(Imcs==30))?4:((Imcs<29)||(Imcs==31))?6:-1);
+    break;
+
+    case 2:
+      return (((Imcs<5)||(Imcs==28))?2:((Imcs<11)||(Imcs==29))?4:((Imcs<20)||(Imcs==30))?6:((Imcs<28)||(Imcs==31))?8:-1);
+    break;
+
+    case 3:
+      return (((Imcs<15)||(Imcs==29))?2:((Imcs<21)||(Imcs==30))?4:((Imcs<29)||(Imcs==31))?6:-1);
+    break;
+
+    default:
+      AssertFatal(0, "Invalid MCS table index %d (expected in range [1,3])\n", table_idx);
+  }
+}
+
+uint32_t nr_get_code_rate(uint8_t Imcs, uint8_t table_idx) {
+  switch(table_idx) {
+    case 1:
+      return (nr_target_code_rate_table1[Imcs]<<10);
+    break;
+
+    case 2:
+      return ((Imcs==20)?0xaaa00 : (Imcs==26)?0xe5200 : nr_target_code_rate_table3[Imcs]<<10);
+    break;
+
+    case 3:
+      return (nr_target_code_rate_table3[Imcs]<<10);
+    break;
+
+    default:
+      AssertFatal(0, "Invalid MCS table index %d (expected in range [1,3])\n", table_idx);
+  }
+}