From ea7df91790508be76494270257f9bfbc09c1c9f8 Mon Sep 17 00:00:00 2001
From: Raymond Knopp <raymond.knopp@eurecom.fr>
Date: Fri, 17 Apr 2015 13:05:47 +0000
Subject: [PATCH] updated in dlsch_channel_compensation_TM3: inlining precoder
and energy computation out of PRB loop (very bad performance bug)
git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7203 818b1a75-f10b-46b9-bf7c-635c3b92a50f
---
.../PHY/LTE_TRANSPORT/dlsch_demodulation.c | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)
diff --git a/openair1/PHY/LTE_TRANSPORT/dlsch_demodulation.c b/openair1/PHY/LTE_TRANSPORT/dlsch_demodulation.c
index 121735704b..f2c15cbf2c 100644
--- a/openair1/PHY/LTE_TRANSPORT/dlsch_demodulation.c
+++ b/openair1/PHY/LTE_TRANSPORT/dlsch_demodulation.c
@@ -1350,9 +1350,10 @@ short TM3_prec[8]__attribute__((aligned(16))) = {1,1,-1,-1,1,1,-1,-1} ;
#if defined(__x86_64__) || defined(__i386__)
-void prec2A_TM3_128(__m128i *ch0,__m128i *ch1)
-{
-
+static inline void prec2A_TM3_128(__m128i *ch0,__m128i *ch1) __attribute__((always_inline));
+static inline void prec2A_TM3_128(__m128i *ch0,__m128i *ch1)
+{
+
// __m128i amp = _mm_set1_epi16(ONE_OVER_SQRT2_Q15);
__m128i tmp0,tmp1;
@@ -1379,8 +1380,6 @@ void prec2A_TM3_128(__m128i *ch0,__m128i *ch1)
// print_shorts("prec2A_TM3 ch0 (after):",ch0);
// print_shorts("prec2A_TM3 ch1 (after):",ch1);
- _mm_empty();
- _m_empty();
}
#elif defined(__arm__)
@@ -2155,12 +2154,13 @@ void dlsch_channel_compensation_TM3(LTE_DL_FRAME_PARMS *frame_parms,
Nre = (pilots==0) ? 12 : 8;
- precoded_signal_strength0 += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*Nre],
- (nb_rb*Nre))*rx_power_correction) - (phy_measurements->n0_power[aarx]));
- precoded_signal_strength1 += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx+2][symbol*frame_parms->N_RB_DL*Nre],
- (nb_rb*Nre))*rx_power_correction) - (phy_measurements->n0_power[aarx]));
} // rb loop
+ precoded_signal_strength0 += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*Nre],
+ (nb_rb*Nre))*rx_power_correction) - (phy_measurements->n0_power[aarx]));
+
+ precoded_signal_strength1 += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx+2][symbol*frame_parms->N_RB_DL*Nre],
+ (nb_rb*Nre))*rx_power_correction) - (phy_measurements->n0_power[aarx]));
} // rx_antennas
phy_measurements->precoded_cqi_dB[eNB_id][0] = dB_fixed2(precoded_signal_strength0,phy_measurements->n0_power_tot);
--
GitLab