From 4891d600c8a82c3a86f7a754f0a5b1e8fc26b198 Mon Sep 17 00:00:00 2001
From: Florian Kaltenberger <florian.kaltenberger@eurecom.fr>
Date: Fri, 19 Aug 2016 11:23:13 +0200
Subject: [PATCH] fix in PDCCH for Alamouti coding
---
openair1/PHY/LTE_TRANSPORT/dci.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/openair1/PHY/LTE_TRANSPORT/dci.c b/openair1/PHY/LTE_TRANSPORT/dci.c
index e79f603a49..8af29714a1 100644
--- a/openair1/PHY/LTE_TRANSPORT/dci.c
+++ b/openair1/PHY/LTE_TRANSPORT/dci.c
@@ -2086,7 +2086,6 @@ uint8_t generate_dci_top(uint8_t num_ue_spec_dci,
frame_parms,
txdataF,
subframe);
-
wbar[0] = &wbar0[0];
wbar[1] = &wbar1[0];
y[0] = &yseq0[0];
@@ -2190,15 +2189,15 @@ uint8_t generate_dci_top(uint8_t num_ue_spec_dci,
LOG_I(PHY," PDCCH Modulation (TX diversity): REG %d\n",i>>2);
#endif
// first antenna position n -> x0
- ((int16_t*)&y[0][i])[0] = (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
+ ((int16_t*)&y[0][i])[0] = (*e_ptr==2) ? 0 : (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
e_ptr++;
- ((int16_t*)&y[0][i])[1] = (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
+ ((int16_t*)&y[0][i])[1] = (*e_ptr==2) ? 0 : (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
e_ptr++;
// second antenna position n -> -x1*
- ((int16_t*)&y[1][i])[0] = (*e_ptr == 1) ? gain_lin_QPSK : -gain_lin_QPSK;
+ ((int16_t*)&y[1][i])[0] = (*e_ptr==2) ? 0 : (*e_ptr == 1) ? gain_lin_QPSK : -gain_lin_QPSK;
e_ptr++;
- ((int16_t*)&y[1][i])[1] = (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
+ ((int16_t*)&y[1][i])[1] = (*e_ptr==2) ? 0 : (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
e_ptr++;
// fill in the rest of the ALAMOUTI precoding
--
GitLab