diff --git a/openair1/PHY/LTE_REFSIG/lte_dl_uespec.c b/openair1/PHY/LTE_REFSIG/lte_dl_uespec.c
new file mode 100644
index 0000000000..d029f959ed
--- /dev/null
+++ b/openair1/PHY/LTE_REFSIG/lte_dl_uespec.c
@@ -0,0 +1,396 @@
+/*******************************************************************************
+    OpenAirInterface
+    Copyright(c) 1999 - 2014 Eurecom
+
+    OpenAirInterface is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+
+    OpenAirInterface is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenAirInterface.The full GNU General Public License is
+   included in this distribution in the file called "COPYING". If not,
+   see <http://www.gnu.org/licenses/>.
+
+  Contact Information
+  OpenAirInterface Admin: openair_admin@eurecom.fr
+  OpenAirInterface Tech : openair_tech@eurecom.fr
+  OpenAirInterface Dev  : openair4g-devel@eurecom.fr
+
+  Address      : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE
+
+ *******************************************************************************/
+
+/*! \file PHY/LTE_REFSIG/lte_dl_ue_spec.c
+* \brief Top-level routines for generating UE-specific Reference signals from 36-211, V11.3.0 2013-06
+* \author R. Knopp X. Jiang
+* \date 2015
+* \version 0.1
+* \company Eurecom
+* \email: knopp@eurecom.fr xiwen.jiang@eurecom.fr
+* \note
+* \warning
+*/
+
+#ifdef USER_MODE
+#include <stdio.h>
+#include <stdlib.h>
+#endif
+
+#include "defs.h"
+#include "PHY/defs.h"
+#include "log.h"
+
+//extern unsigned int lte_gold_table[3][20][2][14];
+//#define DEBUG_DL_CELL_SPEC
+
+int Wbar_NCP[8][4] = {{1,1,1,1},{1,-1,1,-1},{1,1,1,1},{1,-1,1,-1},{1,1,-1,-1},{-1,-1,1,1},{1,-1,-1,1},{-1,1,1,-1}};
+
+/*
+int lte_dl_ue_spec(PHY_VARS_eNB *phy_vars_eNB,
+                   uint8_t UE_id,
+                   mod_sym_t *output,
+                   short amp,
+                   uint8_t Ns,
+		   uint8_t lprime,
+                   uint8_t p,
+                   int SS_flag)
+{
+
+  mod_sym_t qpsk[4],nqpsk[4];
+  int16_t k=0,a;
+  int mprime,ind,ind_dword,ind_qpsk_symb;
+  unsigned nushift,kprime;
+  //  LTE_eNB_DLSCH_t *dlsch = phy_vars_eNB->dlsch_eNB[UE_id][0];
+
+  a = (amp*ONE_OVER_SQRT2_Q15)>>15;
+  ((short *)&qpsk[0])[0] = a;
+  ((short *)&qpsk[0])[1] = a;
+  ((short *)&qpsk[1])[0] = -a;
+  ((short *)&qpsk[1])[1] = a;
+  ((short *)&qpsk[2])[0] = a;
+  ((short *)&qpsk[2])[1] = -a;
+  ((short *)&qpsk[3])[0] = -a;
+  ((short *)&qpsk[3])[1] = -a;
+
+  ((short *)&nqpsk[0])[0] = -a;
+  ((short *)&nqpsk[0])[1] = -a;
+  ((short *)&nqpsk[1])[0] = a;
+  ((short *)&nqpsk[1])[1] = -a;
+  ((short *)&nqpsk[2])[0] = -a;
+  ((short *)&nqpsk[2])[1] = a;
+  ((short *)&nqpsk[3])[0] = a;
+  ((short *)&nqpsk[3])[1] = a;
+
+  if (p==5) {
+    if (SS_flag==0) {
+      if (phy_vars_eNB->lte_frame_parms.Ncp == NORMAL) {
+      // this is 3GPP 36-211 6.10.3.2, NORMAL CP, p=5
+      
+      nushift =  phy_vars_eNB->lte_frame_parms.Nid_cell%3;
+
+      if(lprime==0){
+        kprime=nushift;
+      }else{
+        kprime=(nushift+2*lprime)%4;
+      }
+
+      k = kprime+phy_vars_eNB->lte_frame_parms.first_carrier_offset;
+      printf("lte_dl_ue_spec:k=%d\n",k);
+ 
+      for (mprime=0;mprime<3*nRB_PDSCH-1;mprime++) {
+        ind = 3*lprime*nRB_PDSCH+mprime;
+        ind_dword = ind>>4;
+        ind_qpsk_symb = ind&0xf;
+
+        output[k] = qpsk[(phy_vars_UE->lte_gold_uespec_port5_table[Ns][ind_dword]>>(2*ind_qpsk_symb))&3];
+        //output[k] = 0xffffffff;
+
+        k += 4;
+        if (k >= phy_vars_eNB->lte_frame_parms.ofdm_symbol_size) {
+          k++;  // skip DC carrier
+          k-=phy_vars_eNB->lte_frame_parms.ofdm_symbol_size;
+        }
+
+       }
+      }
+    }
+  } else if (p>=7) {
+    printf("lte_dl_ue_spec:antenna ports >=7 not supported yet!\n");
+  } else {
+    LOG_E(PHY,"Illegal p %d UE specific pilots\n",p);
+  }
+
+  return(0);
+}
+*/
+
+
+int lte_dl_ue_spec_rx(PHY_VARS_UE *phy_vars_ue,
+                      mod_sym_t *output,
+                      unsigned char Ns,
+                      unsigned char p, 
+                      int lprime,
+                      int SS_flag,
+                      uint16_t nRB_PDSCH)
+{
+  mod_sym_t qpsk[4],nqpsk[4],*qpsk_p,*output_p;
+  int w,mprime,ind,l,ind_dword,ind_qpsk_symb,nPRB;
+  short pamp;
+
+  // Compute the correct pilot amplitude, sqrt_rho_b = Q3.13
+  pamp = ONE_OVER_SQRT2_Q15;
+
+  // This includes complex conjugate for channel estimation
+  ((short *)&qpsk[0])[0] = pamp;
+  ((short *)&qpsk[0])[1] = -pamp;
+  ((short *)&qpsk[1])[0] = -pamp;
+  ((short *)&qpsk[1])[1] = -pamp;
+  ((short *)&qpsk[2])[0] = pamp;
+  ((short *)&qpsk[2])[1] = pamp;
+  ((short *)&qpsk[3])[0] = -pamp;
+  ((short *)&qpsk[3])[1] = pamp;
+
+  ((short *)&nqpsk[0])[0] = -pamp;
+  ((short *)&nqpsk[0])[1] = pamp;
+  ((short *)&nqpsk[1])[0] = pamp;
+  ((short *)&nqpsk[1])[1] = pamp;
+  ((short *)&nqpsk[2])[0] = -pamp;
+  ((short *)&nqpsk[2])[1] = -pamp;
+  ((short *)&nqpsk[3])[0] = pamp;
+  ((short *)&nqpsk[3])[1] = -pamp;
+
+  if (p>=7) {
+    if (SS_flag==0) {
+      if (phy_vars_ue->lte_frame_parms.Ncp == NORMAL) {
+        // this is 3GPP 36-211 6.10.3.2, NORMAL CP, p>=7
+
+        output_p = output;
+
+        ind = 3*lprime*phy_vars_ue->lte_frame_parms.N_RB_DL;
+        l = lprime + ((Ns&1)<<1);
+
+        // loop over pairs of PRBs, this is the periodicity of the W_bar_NCP sequence
+        // unroll the computations for the 6 pilots, select qpsk or nqpsk as function of W_bar_NCP
+        for (nPRB=0; nPRB<phy_vars_ue->lte_frame_parms.N_RB_DL; nPRB+=2) {
+
+          // First pilot
+          w = Wbar_NCP[p-7][l];
+          qpsk_p = (w==1) ? qpsk : nqpsk;
+
+
+          ind_dword     = ind>>4;
+          ind_qpsk_symb = ind&0xf;
+
+          *output_p = qpsk_p[(phy_vars_ue->lte_gold_uespec_table[0][Ns][lprime][ind_dword]>>(2*ind_qpsk_symb))&3];
+
+
+#ifdef DEBUG_DL_UESPEC
+          LOG_D(PHY,"Ns %d, l %d, m %d,ind_dword %d, ind_qpsk_symbol %d\n",
+                Ns,l,m,ind_dword,ind_qpsk_symb);
+          LOG_D(PHY,"index = %d\n",(phy_vars_eNB->lte_gold_uespec_table[0][Ns][lprime][ind_dword]>>(2*ind_qpsk_symb))&3);
+#endif
+
+          output_p++;
+          ind++;
+
+          w =  Wbar_NCP[p-7][3-l];
+          qpsk_p = (w==1) ? qpsk : nqpsk;
+
+          // Second pilot
+          ind_dword     = ind>>4;
+          ind_qpsk_symb = ind&0xf;
+
+          *output_p = qpsk_p[(phy_vars_ue->lte_gold_uespec_table[0][Ns][lprime][ind_dword]>>(2*ind_qpsk_symb))&3];
+
+#ifdef DEBUG_DL_UESPEC
+          LOG_D(PHY,"Ns %d, l %d, m %d,ind_dword %d, ind_qpsk_symbol %d\n",
+                Ns,l,m,ind_dword,ind_qpsk_symb);
+          LOG_D(PHY,"index = %d\n",(phy_vars_ue->lte_gold_uespec_table[0][Ns][lprime][ind_dword]>>(2*ind_qpsk_symb))&3);
+#endif
+
+          output_p++;
+          ind++;
+
+          w = Wbar_NCP[p-7][l];
+          qpsk_p = (w==1) ? qpsk : nqpsk;
+          // Third pilot
+          ind_dword     = ind>>4;
+          ind_qpsk_symb = ind&0xf;
+
+          *output_p = qpsk_p[(phy_vars_ue->lte_gold_uespec_table[0][Ns][lprime][ind_dword]>>(2*ind_qpsk_symb))&3];
+
+#ifdef DEBUG_DL_UESPEC
+          LOG_D(PHY,"Ns %d, l %d, m %d,ind_dword %d, ind_qpsk_symbol %d\n",
+                Ns,l,m,ind_dword,ind_qpsk_symb);
+          LOG_D(PHY,"index = %d\n",(phy_vars_eNB->lte_gold_uespec_table[0][Ns][lprime][ind_dword]>>(2*ind_qpsk_symb))&3);
+#endif
+
+          output_p++;
+          ind++;
+
+          // Fourth pilot
+          w = Wbar_NCP[p-7][3-l];
+          qpsk_p = (w==1) ? qpsk : nqpsk;
+
+
+          ind_dword     = ind>>4;
+          ind_qpsk_symb = ind&0xf;
+
+          *output_p = qpsk_p[(phy_vars_ue->lte_gold_uespec_table[0][Ns][lprime][ind_dword]>>(2*ind_qpsk_symb))&3];
+
+
+#ifdef DEBUG_DL_UESPEC
+          LOG_D(PHY,"Ns %d, l %d, m %d,ind_dword %d, ind_qpsk_symbol %d\n",
+                Ns,l,m,ind_dword,ind_qpsk_symb);
+          LOG_D(PHY,"index = %d\n",(phy_vars_ue->lte_gold_uespec_table[0][Ns][lprime][ind_dword]>>(2*ind_qpsk_symb))&3);
+#endif
+
+          output_p++;
+          ind++;
+
+          w =  Wbar_NCP[p-7][l];
+          qpsk_p = (w==1) ? qpsk : nqpsk;
+
+          // Fifth pilot
+          ind_dword     = ind>>4;
+          ind_qpsk_symb = ind&0xf;
+
+          *output_p = qpsk_p[(phy_vars_ue->lte_gold_uespec_table[0][Ns][lprime][ind_dword]>>(2*ind_qpsk_symb))&3];
+
+#ifdef DEBUG_DL_UESPEC
+          LOG_D(PHY,"Ns %d, l %d, m %d,ind_dword %d, ind_qpsk_symbol %d\n",
+                Ns,l,m,ind_dword,ind_qpsk_symb);
+          LOG_D(PHY,"index = %d\n",(phy_vars_ue->lte_gold_uespec_table[0][Ns][lprime][ind_dword]>>(2*ind_qpsk_symb))&3);
+#endif
+
+          output_p++;
+          ind++;
+
+          w = Wbar_NCP[p-7][3-l];
+          qpsk_p = (w==1) ? qpsk : nqpsk;
+          // Sixth pilot
+          ind_dword     = ind>>4;
+          ind_qpsk_symb = ind&0xf;
+
+          *output_p = qpsk_p[(phy_vars_ue->lte_gold_uespec_table[0][Ns][lprime][ind_dword]>>(2*ind_qpsk_symb))&3];
+
+#ifdef DEBUG_DL_UESPEC
+          LOG_D(PHY,"Ns %d, l %d, m %d,ind_dword %d, ind_qpsk_symbol %d\n",
+                Ns,l,m,ind_dword,ind_qpsk_symb);
+          LOG_D(PHY,"index = %d\n",(phy_vars_ue->lte_gold_uespec_table[0][Ns][lprime][ind_dword]>>(2*ind_qpsk_symb))&3);
+#endif
+
+          output_p++;
+          ind++;
+        }
+      } else {
+        LOG_E(PHY,"Special subframe not supported for UE specific pilots yet\n");
+      }
+    }
+  } else if (p==5) {
+    if (SS_flag==0) {
+      output_p = output;
+
+      if (phy_vars_ue->lte_frame_parms.Ncp == NORMAL) {
+        for (mprime=0;mprime<3*nRB_PDSCH;mprime++) {
+
+          ind = 3*lprime*nRB_PDSCH+mprime;
+          ind_dword = ind>>4;
+          ind_qpsk_symb = ind&0xf;
+
+          *output_p = qpsk[(phy_vars_ue->lte_gold_uespec_port5_table[Ns][ind_dword]>>(2*ind_qpsk_symb))&3];
+          //printf("lprime=%d,ind=%d,Ns=%d,output_p=(%d,%d)\n",lprime,ind,Ns,((short *)&output_p[0])[0],((short *)&output_p[0])[1]);
+          output_p++;
+      
+        }
+      }
+    }
+  } else {
+    LOG_E(PHY,"Illegal p %d UE specific pilots\n",p);
+  }
+
+  return(0);
+}
+
+
+
+#ifdef LTE_DL_CELL_SPEC_MAIN
+
+
+
+//extern int write_output(const char *,const char *,void *,int,int,char);
+// flag change eren
+extern int write_output(const char *,const char *,void *,int,int,char);
+main()
+{
+
+  unsigned short Nid_cell=0;
+  unsigned int Ncp = 0;
+  int output00[1024];
+  int output01[1024];
+  int output10[1024];
+  int output11[1024];
+
+  memset(output00,0,1024*sizeof(int));
+  memset(output01,0,1024*sizeof(int));
+  memset(output10,0,1024*sizeof(int));
+  memset(output11,0,1024*sizeof(int));
+
+  lte_gold(Nid_cell,Ncp);
+
+  lte_dl_ue_spec(output00,
+                 ONE_OVER_SQRT2_Q15,
+                 50,
+                 Nid_cell,
+                 Ncp,
+                 0,
+                 0,
+                 0,
+                 0);
+
+  lte_dl_ue_spec(output10,
+                 ONE_OVER_SQRT2_Q15,
+                 50,
+                 Nid_cell,
+                 Ncp,
+                 0,
+                 1,
+                 0,
+                 0);
+
+  lte_dl_ue_spec(output01,
+                 ONE_OVER_SQRT2_Q15,
+                 50,
+                 Nid_cell,
+                 Ncp,
+                 0,
+                 0,
+                 1,
+                 0);
+
+  lte_dl_ue_spec(output11,
+                 ONE_OVER_SQRT2_Q15,
+                 50,
+                 Nid_cell,
+                 Ncp,
+                 0,
+                 1,
+                 1,
+                 0);
+
+
+  write_output("dl_ue_spec00.m","dl_cs00",output00,1024,1,1);
+  write_output("dl_ue_spec01.m","dl_cs01",output01,1024,1,1);
+  write_output("dl_ue_spec10.m","dl_cs10",output10,1024,1,1);
+  write_output("dl_ue_spec11.m","dl_cs11",output11,1024,1,1);
+}
+
+
+#endif