diff --git a/openair1/PHY/INIT/nr_init_ue.c b/openair1/PHY/INIT/nr_init_ue.c
index 09bc80c4ed..acd945497f 100644
--- a/openair1/PHY/INIT/nr_init_ue.c
+++ b/openair1/PHY/INIT/nr_init_ue.c
@@ -159,7 +159,7 @@ int init_nr_ue_signal(PHY_VARS_NR_UE *ue, int nb_connected_gNB)
   NR_UE_CSI_RS **const csirs_vars        = ue->csirs_vars;
   NR_UE_SRS **const srs_vars             = ue->srs_vars;
 
-  int i, j, slot, symb, gNB_id, th_id;
+  int i, slot, symb, gNB_id, th_id;
 
   LOG_I(PHY, "Initializing UE vars for gNB TXant %u, UE RXant %u\n", fp->nb_antennas_tx, fp->nb_antennas_rx);
 
@@ -362,16 +362,6 @@ int init_nr_ue_signal(PHY_VARS_NR_UE *ue, int nb_connected_gNB)
     for (i=0; i<NR_MAX_NB_PORTS; i++) {
       ue->nr_csi_rs_info->csi_rs_generated_signal[i] = (int32_t *) malloc16_clear(fp->samples_per_frame_wCP * sizeof(int32_t));
     }
-    ue->nr_csi_rs_info->csi_rs_ls_estimated_channel = (int32_t ***)malloc16(fp->nb_antennas_rx * sizeof(int32_t **) );
-    ue->nr_csi_rs_info->csi_rs_estimated_channel_freq = (int32_t ***)malloc16(fp->nb_antennas_rx * sizeof(int32_t **) );
-    for (i=0; i<fp->nb_antennas_rx; i++) {
-      ue->nr_csi_rs_info->csi_rs_ls_estimated_channel[i] = (int32_t **) malloc16_clear(NR_MAX_NB_PORTS * sizeof(int32_t *));
-      ue->nr_csi_rs_info->csi_rs_estimated_channel_freq[i] = (int32_t **) malloc16_clear(NR_MAX_NB_PORTS * sizeof(int32_t *));
-      for (j=0; j<NR_MAX_NB_PORTS; j++) {
-        ue->nr_csi_rs_info->csi_rs_ls_estimated_channel[i][j] = (int32_t *) malloc16_clear(fp->ofdm_symbol_size * sizeof(int32_t));
-        ue->nr_csi_rs_info->csi_rs_estimated_channel_freq[i][j] = (int32_t *) malloc16_clear(fp->ofdm_symbol_size * sizeof(int32_t));
-      }
-    }
 
     ue->nr_csi_im_info = (nr_csi_im_info_t *)malloc16_clear(sizeof(nr_csi_im_info_t));
 
@@ -495,14 +485,6 @@ void term_nr_ue_signal(PHY_VARS_NR_UE *ue, int nb_connected_gNB)
     for (int i=0; i<NR_MAX_NB_PORTS; i++) {
       free_and_zero(ue->nr_csi_rs_info->csi_rs_generated_signal[i]);
     }
-    for (int i = 0; i < fp->nb_antennas_rx; i++) {
-      for (int j=0; j<NR_MAX_NB_PORTS; j++) {
-        free_and_zero(ue->nr_csi_rs_info->csi_rs_ls_estimated_channel[i][j]);
-        free_and_zero(ue->nr_csi_rs_info->csi_rs_estimated_channel_freq[i][j]);
-      }
-      free_and_zero(ue->nr_csi_rs_info->csi_rs_ls_estimated_channel[i]);
-      free_and_zero(ue->nr_csi_rs_info->csi_rs_estimated_channel_freq[i]);
-    }
     for (int slot=0; slot<fp->slots_per_frame; slot++) {
       for (int symb=0; symb<fp->symbols_per_slot; symb++) {
         free_and_zero(ue->nr_csi_rs_info->nr_gold_csi_rs[slot][symb]);
diff --git a/openair1/PHY/NR_UE_TRANSPORT/csi_rx.c b/openair1/PHY/NR_UE_TRANSPORT/csi_rx.c
index 29958d7e77..09f21a96b9 100644
--- a/openair1/PHY/NR_UE_TRANSPORT/csi_rx.c
+++ b/openair1/PHY/NR_UE_TRANSPORT/csi_rx.c
@@ -254,8 +254,8 @@ int nr_csi_rs_channel_estimation(const PHY_VARS_NR_UE *ue,
                                  const nr_csi_rs_info_t *nr_csi_rs_info,
                                  const int32_t **csi_rs_generated_signal,
                                  const int32_t csi_rs_received_signal[][ue->frame_parms.samples_per_slot_wCP],
-                                 int32_t ***csi_rs_ls_estimated_channel,
-                                 int32_t ***csi_rs_estimated_channel_freq,
+                                 int32_t csi_rs_ls_estimated_channel[][ue->nr_csi_rs_info->N_ports][ue->frame_parms.ofdm_symbol_size],
+                                 int32_t csi_rs_estimated_channel_freq[][ue->nr_csi_rs_info->N_ports][ue->frame_parms.ofdm_symbol_size],
                                  int16_t *log2_re,
                                  int16_t *log2_maxh,
                                  uint32_t *noise_power) {
@@ -422,7 +422,7 @@ int nr_csi_rs_channel_estimation(const PHY_VARS_NR_UE *ue,
 int nr_csi_rs_ri_estimation(const PHY_VARS_NR_UE *ue,
                             const fapi_nr_dl_config_csirs_pdu_rel15_t *csirs_config_pdu,
                             const nr_csi_rs_info_t *nr_csi_rs_info,
-                            int32_t ***csi_rs_estimated_channel_freq,
+                            int32_t csi_rs_estimated_channel_freq[][ue->nr_csi_rs_info->N_ports][ue->frame_parms.ofdm_symbol_size],
                             const int16_t log2_maxh,
                             uint8_t *rank_indicator) {
 
@@ -553,7 +553,7 @@ int nr_csi_rs_ri_estimation(const PHY_VARS_NR_UE *ue,
 int nr_csi_rs_pmi_estimation(const PHY_VARS_NR_UE *ue,
                              const fapi_nr_dl_config_csirs_pdu_rel15_t *csirs_config_pdu,
                              const nr_csi_rs_info_t *nr_csi_rs_info,
-                             const int32_t ***csi_rs_estimated_channel_freq,
+                             const int32_t csi_rs_estimated_channel_freq[][ue->nr_csi_rs_info->N_ports][ue->frame_parms.ofdm_symbol_size],
                              const uint32_t interference_plus_noise_power,
                              const uint8_t rank_indicator,
                              const int16_t log2_re,
@@ -812,7 +812,6 @@ int nr_ue_csi_rs_procedures(PHY_VARS_NR_UE *ue, UE_nr_rxtx_proc_t *proc, uint8_t
 
   const NR_DL_FRAME_PARMS *frame_parms = &ue->frame_parms;
   int32_t csi_rs_received_signal[frame_parms->nb_antennas_rx][frame_parms->samples_per_slot_wCP];
-
   int16_t log2_re = 0;
   int16_t log2_maxh = 0;
   uint32_t noise_power = 0;
@@ -829,6 +828,9 @@ int nr_ue_csi_rs_procedures(PHY_VARS_NR_UE *ue, UE_nr_rxtx_proc_t *proc, uint8_t
                      (nfapi_nr_dl_tti_csi_rs_pdu_rel15_t *) csirs_config_pdu,
                      proc->nr_slot_rx);
 
+  int32_t csi_rs_ls_estimated_channel[frame_parms->nb_antennas_rx][ue->nr_csi_rs_info->N_ports][frame_parms->ofdm_symbol_size];
+  int32_t csi_rs_estimated_channel_freq[frame_parms->nb_antennas_rx][ue->nr_csi_rs_info->N_ports][frame_parms->ofdm_symbol_size];
+
   nr_get_csi_rs_signal(ue,
                        proc,
                        csirs_config_pdu,
@@ -841,8 +843,8 @@ int nr_ue_csi_rs_procedures(PHY_VARS_NR_UE *ue, UE_nr_rxtx_proc_t *proc, uint8_t
                                ue->nr_csi_rs_info,
                                (const int32_t **) ue->nr_csi_rs_info->csi_rs_generated_signal,
                                csi_rs_received_signal,
-                               ue->nr_csi_rs_info->csi_rs_ls_estimated_channel,
-                               ue->nr_csi_rs_info->csi_rs_estimated_channel_freq,
+                               csi_rs_ls_estimated_channel,
+                               csi_rs_estimated_channel_freq,
                                &log2_re,
                                &log2_maxh,
                                &noise_power);
@@ -850,14 +852,14 @@ int nr_ue_csi_rs_procedures(PHY_VARS_NR_UE *ue, UE_nr_rxtx_proc_t *proc, uint8_t
   nr_csi_rs_ri_estimation(ue,
                           csirs_config_pdu,
                           ue->nr_csi_rs_info,
-                          ue->nr_csi_rs_info->csi_rs_estimated_channel_freq,
+                          csi_rs_estimated_channel_freq,
                           log2_maxh,
                           &rank_indicator);
 
   nr_csi_rs_pmi_estimation(ue,
                            csirs_config_pdu,
                            ue->nr_csi_rs_info,
-                           (const int32_t ***) ue->nr_csi_rs_info->csi_rs_estimated_channel_freq,
+                           csi_rs_estimated_channel_freq,
                            ue->nr_csi_im_info->meas_computed ? ue->nr_csi_im_info->interference_plus_noise_power : noise_power,
                            rank_indicator,
                            log2_re,
diff --git a/openair1/PHY/defs_nr_common.h b/openair1/PHY/defs_nr_common.h
index 9556c9cba2..3cc2a1245a 100644
--- a/openair1/PHY/defs_nr_common.h
+++ b/openair1/PHY/defs_nr_common.h
@@ -266,8 +266,6 @@ typedef struct {
   uint32_t ***nr_gold_csi_rs;
   uint8_t csi_rs_generated_signal_bits;
   int32_t **csi_rs_generated_signal;
-  int32_t ***csi_rs_ls_estimated_channel;
-  int32_t ***csi_rs_estimated_channel_freq;
 } nr_csi_rs_info_t;
 
 typedef struct {