From 9126c88294f6991fa574f1a47ab953b10ee5f470 Mon Sep 17 00:00:00 2001
From: Cedric Roux <cedric.roux@eurecom.fr>
Date: Mon, 6 Aug 2018 16:57:15 +0200
Subject: [PATCH] HACK: let the basic simulator work again

A better solution has to be found.
---
 openair1/PHY/LTE_TRANSPORT/dlsch_modulation.c |  6 +++++
 .../PHY/LTE_UE_TRANSPORT/dlsch_demodulation.c | 27 ++++++++++++-------
 2 files changed, 24 insertions(+), 9 deletions(-)

diff --git a/openair1/PHY/LTE_TRANSPORT/dlsch_modulation.c b/openair1/PHY/LTE_TRANSPORT/dlsch_modulation.c
index ea92dbb560..6f1913ff91 100644
--- a/openair1/PHY/LTE_TRANSPORT/dlsch_modulation.c
+++ b/openair1/PHY/LTE_TRANSPORT/dlsch_modulation.c
@@ -2428,6 +2428,12 @@ int dlsch_modulation(PHY_VARS_eNB* phy_vars_eNB,
 
     }
 
+    /* TODO: hack, to be removed. The power is too different from
+     * previous version. Some more work/validation is needed before
+     * we switch to the new version.
+     */
+    allocate_REs = allocate_REs_in_RB;
+
     switch (mod_order1) {
     case 2:
       qam_table_s1 = NULL;
diff --git a/openair1/PHY/LTE_UE_TRANSPORT/dlsch_demodulation.c b/openair1/PHY/LTE_UE_TRANSPORT/dlsch_demodulation.c
index 6e68752cec..f7940c5948 100644
--- a/openair1/PHY/LTE_UE_TRANSPORT/dlsch_demodulation.c
+++ b/openair1/PHY/LTE_UE_TRANSPORT/dlsch_demodulation.c
@@ -1314,13 +1314,17 @@ void dlsch_channel_compensation(int **rxdataF_ext,
     }
 
     for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
-
-      dl_ch128          = (__m128i *)&dl_ch_estimates_ext[aatx*frame_parms->nb_antennas_rx + aarx][symbol*frame_parms->N_RB_DL*12];
+      /* TODO: hack to be removed. There is crash for 1 antenna case, so
+       * for 1 antenna case, I put back the value 2 as it was before
+       * Elena's commit.
+       */
+      int x = frame_parms->nb_antennas_rx > 1 ? frame_parms->nb_antennas_rx : 2;
+      dl_ch128          = (__m128i *)&dl_ch_estimates_ext[aatx*x + aarx][symbol*frame_parms->N_RB_DL*12];
       //print_shorts("dl_ch128[0]=",&dl_ch128[0]);*/
-      dl_ch_mag128      = (__m128i *)&dl_ch_mag[aatx*frame_parms->nb_antennas_rx + aarx][symbol*frame_parms->N_RB_DL*12];
-      dl_ch_mag128b     = (__m128i *)&dl_ch_magb[aatx*frame_parms->nb_antennas_rx + aarx][symbol*frame_parms->N_RB_DL*12];
+      dl_ch_mag128      = (__m128i *)&dl_ch_mag[aatx*x + aarx][symbol*frame_parms->N_RB_DL*12];
+      dl_ch_mag128b     = (__m128i *)&dl_ch_magb[aatx*x + aarx][symbol*frame_parms->N_RB_DL*12];
       rxdataF128        = (__m128i *)&rxdataF_ext[aarx][symbol*frame_parms->N_RB_DL*12];
-      rxdataF_comp128   = (__m128i *)&rxdataF_comp[aatx*frame_parms->nb_antennas_rx + aarx][symbol*frame_parms->N_RB_DL*12];
+      rxdataF_comp128   = (__m128i *)&rxdataF_comp[aatx*x + aarx][symbol*frame_parms->N_RB_DL*12];
 
       for (rb=0; rb<nb_rb; rb++) {
         if (mod_order>2) {
@@ -1770,12 +1774,17 @@ void dlsch_channel_compensation_core(int **rxdataF_ext,
     }
 
     for (aarx=0; aarx<n_rx; aarx++) {
+      /* TODO: hack to be removed. There is crash for 1 antenna case, so
+       * for 1 antenna case, I put back the value 2 as it was before
+       * Elena's commit.
+       */
+      int x = n_rx > 1 ? n_rx : 2;
 
-    dl_ch128          = (__m128i *)&dl_ch_estimates_ext[aatx*n_rx + aarx][start_point];
-    dl_ch_mag128      = (__m128i *)&dl_ch_mag[aatx*n_rx + aarx][start_point];
-    dl_ch_mag128b     = (__m128i *)&dl_ch_magb[aatx*n_rx + aarx][start_point];
+    dl_ch128          = (__m128i *)&dl_ch_estimates_ext[aatx*x + aarx][start_point];
+    dl_ch_mag128      = (__m128i *)&dl_ch_mag[aatx*x + aarx][start_point];
+    dl_ch_mag128b     = (__m128i *)&dl_ch_magb[aatx*x + aarx][start_point];
     rxdataF128        = (__m128i *)&rxdataF_ext[aarx][start_point];
-    rxdataF_comp128   = (__m128i *)&rxdataF_comp[aatx*n_rx + aarx][start_point];
+    rxdataF_comp128   = (__m128i *)&rxdataF_comp[aatx*x + aarx][start_point];
 
       length_mod8 = length&7;
       if (length_mod8 == 0){