Encapsulated lte_gold_generic functionality

cmake_targets/CMakeLists.txt

@@ -1093,6 +1093,7 @@ set(PHY_SRC_COMMON
   ${OPENAIR1_DIR}/PHY/LTE_TRANSPORT/prach_common.c
   ${OPENAIR1_DIR}/PHY/LTE_TRANSPORT/pucch_common.c
   ${OPENAIR1_DIR}/PHY/LTE_TRANSPORT/dlsch_scrambling.c
+  ${OPENAIR1_DIR}/PHY/LTE_TRANSPORT/lte_gold_generic.c
   ${OPENAIR1_DIR}/PHY/LTE_UE_TRANSPORT/srs_modulation.c
   ${OPENAIR1_DIR}/PHY/MODULATION/ofdm_mod.c
   ${OPENAIR1_DIR}/PHY/LTE_ESTIMATION/lte_sync_time.c

openair1/PHY/LTE_REFSIG/lte_gold.c

@@ -44,7 +44,6 @@ N_{ID}^{cell = 0..503
 
 void lte_gold(LTE_DL_FRAME_PARMS *frame_parms,uint32_t lte_gold_table[20][2][14],uint16_t Nid_cell)
 {
-
   unsigned char ns,l,Ncp=1-frame_parms->Ncp;
   unsigned int n,x1,x2;//,x1tmp,x2tmp;
 
@@ -81,7 +80,7 @@ void lte_gold(LTE_DL_FRAME_PARMS *frame_parms,uint32_t lte_gold_table[20][2][14]
   }
 }
 
-void lte_gold_ue_spec(LTE_DL_FRAME_PARMS *frame_parms,uint32_t lte_gold_uespec_table[2][20][2][21],uint16_t Nid_cell, uint16_t *n_idDMRS)
+void lte_gold_ue_spec(uint32_t lte_gold_uespec_table[2][20][2][21],uint16_t Nid_cell, uint16_t *n_idDMRS)
 {
 
   unsigned char ns,l;
@@ -169,41 +168,6 @@ void lte_gold_ue_spec_port5(uint32_t lte_gold_uespec_port5_table[20][38],uint16_
   }
 }
 
-/*! \brief gold sequenquence generator
-\param x1
-\param x2 this should be set to c_init if reset=1
-\param reset resets the generator
-\return 32 bits of the gold sequence
-*/
-unsigned int lte_gold_generic(unsigned int *x1, unsigned int *x2, unsigned char reset)
-{
-  int n;
-
-  if (reset) {
-    *x1 = 1+ (1<<31);
-    *x2=*x2 ^ ((*x2 ^ (*x2>>1) ^ (*x2>>2) ^ (*x2>>3))<<31);
-
-    // skip first 50 double words (1600 bits)
-    //      printf("n=0 : x1 %x, x2 %x\n",x1,x2);
-    for (n=1; n<50; n++) {
-      *x1 = (*x1>>1) ^ (*x1>>4);
-      *x1 = *x1 ^ (*x1<<31) ^ (*x1<<28);
-      *x2 = (*x2>>1) ^ (*x2>>2) ^ (*x2>>3) ^ (*x2>>4);
-      *x2 = *x2 ^ (*x2<<31) ^ (*x2<<30) ^ (*x2<<29) ^ (*x2<<28);
-    }
-  }
-
-  *x1 = (*x1>>1) ^ (*x1>>4);
-  *x1 = *x1 ^ (*x1<<31) ^ (*x1<<28);
-  *x2 = (*x2>>1) ^ (*x2>>2) ^ (*x2>>3) ^ (*x2>>4);
-  *x2 = *x2 ^ (*x2<<31) ^ (*x2<<30) ^ (*x2<<29) ^ (*x2<<28);
-  return(*x1^*x2);
-  //  printf("n=%d : c %x\n",n,x1^x2);
-
-}
-
-
-
 #ifdef LTE_GOLD_MAIN
 main()
 {

openair1/PHY/LTE_REFSIG/lte_refsig.h

@@ -36,7 +36,7 @@
 \param reset resets the generator
 \return 32 bits of the gold sequence
 */
-unsigned int lte_gold_generic(unsigned int *x1, unsigned int *x2, unsigned char reset);
+uint32_t lte_gold_generic(uint32_t *x1, uint32_t *x2, uint8_t reset);
 
 
 /*!\brief This function generates the LTE Gold sequence (36-211, Sec 7.2), specifically for DL reference signals.
@@ -45,8 +45,7 @@ unsigned int lte_gold_generic(unsigned int *x1, unsigned int *x2, unsigned char
 @param Nid_cell Cell Id (to compute sequences for local and adjacent cells) */
 
 void lte_gold(LTE_DL_FRAME_PARMS *frame_parms,uint32_t lte_gold_table[20][2][14],uint16_t Nid_cell);
-
-void lte_gold_ue_spec(LTE_DL_FRAME_PARMS *frame_parms,uint32_t lte_gold_uespec_table[2][20][2][21],uint16_t Nid_cell, uint16_t *n_idDMRS);
+void lte_gold_ue_spec(uint32_t lte_gold_uespec_table[2][20][2][21],uint16_t Nid_cell, uint16_t *n_idDMRS);
 
 void lte_gold_ue_spec_port5(uint32_t lte_gold_uespec_port5_table[20][38],uint16_t Nid_cell, uint16_t n_rnti);
 

openair1/PHY/LTE_TRANSPORT/dlsch_scrambling.c

@@ -40,34 +40,6 @@
 #include "PHY/phy_extern.h"
 #include "UTIL/LOG/vcd_signal_dumper.h"
 
-static inline unsigned int lte_gold_scram(unsigned int *x1, unsigned int *x2, unsigned char reset) __attribute__((always_inline));
-static inline unsigned int lte_gold_scram(unsigned int *x1, unsigned int *x2, unsigned char reset)
-{
-  int n;
-
-  if (reset) {
-    *x1 = 1+ (1<<31);
-    *x2=*x2 ^ ((*x2 ^ (*x2>>1) ^ (*x2>>2) ^ (*x2>>3))<<31);
-
-    // skip first 50 double words (1600 bits)
-    //      printf("n=0 : x1 %x, x2 %x\n",x1,x2);
-    for (n=1; n<50; n++) {
-      *x1 = (*x1>>1) ^ (*x1>>4);
-      *x1 = *x1 ^ (*x1<<31) ^ (*x1<<28);
-      *x2 = (*x2>>1) ^ (*x2>>2) ^ (*x2>>3) ^ (*x2>>4);
-      *x2 = *x2 ^ (*x2<<31) ^ (*x2<<30) ^ (*x2<<29) ^ (*x2<<28);
-    }
-  }
-
-  *x1 = (*x1>>1) ^ (*x1>>4);
-  *x1 = *x1 ^ (*x1<<31) ^ (*x1<<28);
-  *x2 = (*x2>>1) ^ (*x2>>2) ^ (*x2>>3) ^ (*x2>>4);
-  *x2 = *x2 ^ (*x2<<31) ^ (*x2<<30) ^ (*x2<<29) ^ (*x2<<28);
-  return(*x1^*x2);
-  //  printf("n=%d : c %x\n",n,x1^x2);
-
-}
-
 void dlsch_scrambling(LTE_DL_FRAME_PARMS *frame_parms,
                       int mbsfn_flag,
                       LTE_eNB_DLSCH_t *dlsch,
@@ -130,7 +102,7 @@ void dlsch_scrambling(LTE_DL_FRAME_PARMS *frame_parms,
   printf("scrambling: rnti %x, q %d, Ns %d, Nid_cell %d, G %d x2 %x\n",dlsch->rnti,q,Ns,frame_parms->Nid_cell, G, x2);
 #endif
 #endif
-  s = lte_gold_scram(&x1, &x2, 1);
+  s = lte_gold_generic(&x1, &x2, 1);
 
   for (n=0; n<(1+(G>>5)); n++) {
 
@@ -179,7 +151,7 @@ void dlsch_scrambling(LTE_DL_FRAME_PARMS *frame_parms,
 
     
     
-    s = lte_gold_scram(&x1, &x2, 0);
+    s = lte_gold_generic(&x1, &x2, 0);
     e += 32;
   }
 
@@ -225,7 +197,7 @@ void dlsch_unscrambling(LTE_DL_FRAME_PARMS *frame_parms,
 #ifdef DEBUG_SCRAMBLING
     printf("unscrambling: rnti %x, q %d, Ns %d, Nid_cell %d G %d, x2 %x\n",dlsch->rnti,q,Ns,frame_parms->Nid_cell,G,x2);
 #endif
-  s = lte_gold_scram(&x1, &x2, 1);
+  s = lte_gold_generic(&x1, &x2, 1);
 
   for (i=0; i<(1+(G>>5)); i++) {
     for (j=0; j<32; j++,k++) {
@@ -238,7 +210,7 @@ void dlsch_unscrambling(LTE_DL_FRAME_PARMS *frame_parms,
 #endif
     }
 
-    s = lte_gold_scram(&x1, &x2, 0);
+    s = lte_gold_generic(&x1, &x2, 0);
   }
 }
 

openair1/PHY/defs_common.h

@@ -72,13 +72,11 @@
 
 #include <pthread.h>
 
-#include "targets/ARCH/COMMON/common_lib.h"
 #include "targets/COMMON/openairinterface5g_limits.h"
 
 #include "types.h"
 #include "nfapi_interface.h"
 //#include "defs.h"
-#include "openair2/COMMON/platform_types.h"
 
 #define RX_NB_TH_MAX 2
 #define RX_NB_TH 2