From e7e01f753a4b4a60b15764555081eb723b8abfc2 Mon Sep 17 00:00:00 2001
From: Laurent THOMAS <laurent.thomas@open-cells.com>
Date: Thu, 16 Jan 2025 09:25:28 +0100
Subject: [PATCH] remove unsed LUT

---
 openair1/PHY/INIT/nr_init.c              |  2 +-
 openair1/PHY/INIT/nr_init_ue.c           |  2 +-
 openair1/PHY/NR_REFSIG/nr_refsig.h       |  4 +--
 openair1/PHY/NR_REFSIG/scrambling_luts.c | 34 ------------------------
 4 files changed, 3 insertions(+), 39 deletions(-)

diff --git a/openair1/PHY/INIT/nr_init.c b/openair1/PHY/INIT/nr_init.c
index 581338fa45..75a5710b94 100644
--- a/openair1/PHY/INIT/nr_init.c
+++ b/openair1/PHY/INIT/nr_init.c
@@ -128,7 +128,7 @@ void phy_init_nr_gNB(PHY_VARS_gNB *gNB)
   load_dftslib();
 
   crcTableInit();
-  init_scrambling_luts();
+  init_byte2m128i();
   init_pucch2_luts();
 
   nr_init_fde(); // Init array for frequency equalization of transform precoding of PUSCH
diff --git a/openair1/PHY/INIT/nr_init_ue.c b/openair1/PHY/INIT/nr_init_ue.c
index 5c4ace4106..5a595af8ab 100644
--- a/openair1/PHY/INIT/nr_init_ue.c
+++ b/openair1/PHY/INIT/nr_init_ue.c
@@ -515,7 +515,7 @@ void phy_init_nr_top(PHY_VARS_NR_UE *ue) {
   NR_DL_FRAME_PARMS *frame_parms = &ue->frame_parms;
   init_delay_table(frame_parms->ofdm_symbol_size, MAX_DELAY_COMP, NR_MAX_OFDM_SYMBOL_SIZE, frame_parms->delay_table);
   crcTableInit();
-  init_scrambling_luts();
+  init_byte2m128i();
   load_dftslib();
   init_context_synchro_nr(frame_parms);
   generate_ul_reference_signal_sequences(SHRT_MAX);
diff --git a/openair1/PHY/NR_REFSIG/nr_refsig.h b/openair1/PHY/NR_REFSIG/nr_refsig.h
index 7996db109a..c79d0b70aa 100644
--- a/openair1/PHY/NR_REFSIG/nr_refsig.h
+++ b/openair1/PHY/NR_REFSIG/nr_refsig.h
@@ -44,12 +44,10 @@ void nr_generate_csi_rs(const NR_DL_FRAME_PARMS *frame_parms,
                         const nfapi_nr_dl_tti_csi_rs_pdu_rel15_t *csi_params,
                         const int slot,
                         const csi_mapping_parms_t *phy_csi_parms);
+void  init_byte2m128i(void);
 
-void init_scrambling_luts(void);
 void nr_generate_modulation_table(void);
 
-extern simde__m64 byte2m64_re[256];
-extern simde__m64 byte2m64_im[256];
 extern simde__m128i byte2m128i[256];
 
 int nr_pusch_lowpaprtype1_dmrs_rx(PHY_VARS_gNB *gNB,
diff --git a/openair1/PHY/NR_REFSIG/scrambling_luts.c b/openair1/PHY/NR_REFSIG/scrambling_luts.c
index 39130b5696..f6b1207838 100644
--- a/openair1/PHY/NR_REFSIG/scrambling_luts.c
+++ b/openair1/PHY/NR_REFSIG/scrambling_luts.c
@@ -22,40 +22,13 @@
 /* Lookup tables for 3GPP scrambling/unscrambling */
 
 /* Author R. Knopp / EURECOM / OpenAirInterface.org */
-#ifndef __SCRAMBLING_LUTS__C__
-#define __SCRAMBLING_LUTS__C__
 
 #include "PHY/impl_defs_nr.h"
 #include "PHY/sse_intrin.h"
 #include <common/utils/LOG/log.h>
 
-simde__m64 byte2m64_re[256];
-simde__m64 byte2m64_im[256];
-
 simde__m128i byte2m128i[256];
 
-void init_byte2m64(void) {
-
-  for (int s=0;s<256;s++) {
-    byte2m64_re[s] = simde_mm_insert_pi16(byte2m64_re[s],(1-2*(s&1)),0);
-    byte2m64_im[s] = simde_mm_insert_pi16(byte2m64_im[s],(1-2*((s>>1)&1)),0);
-    byte2m64_re[s] = simde_mm_insert_pi16(byte2m64_re[s],(1-2*((s>>2)&1)),1);
-    byte2m64_im[s] = simde_mm_insert_pi16(byte2m64_im[s],(1-2*((s>>3)&1)),1);
-    byte2m64_re[s] = simde_mm_insert_pi16(byte2m64_re[s],(1-2*((s>>4)&1)),2);
-    byte2m64_im[s] = simde_mm_insert_pi16(byte2m64_im[s],(1-2*((s>>5)&1)),2);
-    byte2m64_re[s] = simde_mm_insert_pi16(byte2m64_re[s],(1-2*((s>>6)&1)),3);
-    byte2m64_im[s] = simde_mm_insert_pi16(byte2m64_im[s],(1-2*((s>>7)&1)),3);
-     LOG_T(PHY,"init_scrambling_luts: s %x (%d) ((%d,%d),(%d,%d),(%d,%d),(%d,%d))\n",
-	    ((uint16_t*)&s)[0],
-	    (1-2*(s&1)),
-	    ((int16_t*)&byte2m64_re[s])[0],((int16_t*)&byte2m64_im[s])[0],    
-	    ((int16_t*)&byte2m64_re[s])[1],((int16_t*)&byte2m64_im[s])[1],    
-	    ((int16_t*)&byte2m64_re[s])[2],((int16_t*)&byte2m64_im[s])[2],    
-	    ((int16_t*)&byte2m64_re[s])[3],((int16_t*)&byte2m64_im[s])[3]);  
-
-  }
-}
-
 void init_byte2m128i(void) {
 
   for (int s=0;s<256;s++) {
@@ -70,10 +43,3 @@ void init_byte2m128i(void) {
   }
 }
 
-void init_scrambling_luts(void) {
-
-  init_byte2m64();
-  init_byte2m128i();
-}
-
-#endif