From 194670a2a3c7163a84c4980117bdf1eb35b8a8f0 Mon Sep 17 00:00:00 2001
From: Xavier Arteaga <xavier@softwareradiosystems.com>
Date: Mon, 1 Feb 2021 18:33:58 +0100
Subject: [PATCH] NRPHY: hard-coded symbol phase correction

---
 lib/src/phy/ue/ue_dl_nr.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/lib/src/phy/ue/ue_dl_nr.c b/lib/src/phy/ue/ue_dl_nr.c
index 3acbc1669..7a330faff 100644
--- a/lib/src/phy/ue/ue_dl_nr.c
+++ b/lib/src/phy/ue/ue_dl_nr.c
@@ -11,6 +11,7 @@
  */
 
 #include "srslte/phy/ue/ue_dl_nr.h"
+#include <complex.h>
 
 #define UE_DL_NR_PDCCH_CORR_DEFAULT_THR 0.5f
 #define UE_DL_NR_PDCCH_EPRE_DEFAULT_THR -10.0f
@@ -196,6 +197,17 @@ void srslte_ue_dl_nr_estimate_fft(srslte_ue_dl_nr_t* q, const srslte_dl_slot_cfg
     srslte_ofdm_rx_sf(&q->fft[i]);
   }
 
+  // Temporary symbol phase shift
+  uint32_t nof_re = SRSLTE_NRE * q->carrier.nof_prb;
+  for (uint32_t i = 0; i < 2; i++) {
+    for (uint32_t j = 0; j < 7; j++) {
+      srslte_vec_sc_prod_ccc(&q->sf_symbols[0][(i * 7 + j) * nof_re],
+                             cexpf(-I * (11.0f * j - 2.0f) * M_PI / 16),
+                             &q->sf_symbols[0][(i * 7 + j) * nof_re],
+                             nof_re);
+    }
+  }
+
   // Estimate PDCCH channel for every configured CORESET
   for (uint32_t i = 0; i < SRSLTE_UE_DL_NR_MAX_NOF_CORESET; i++) {
     if (q->cfg.coreset_present[i]) {