From 513ed46e562e6514ced39f68783eb7fb65ce1640 Mon Sep 17 00:00:00 2001
From: lukashov <elena.lukashova@eurecom.fr>
Date: Wed, 16 Dec 2015 15:46:56 +0100
Subject: [PATCH] Calibrating offset for TM1 and introducing LUT
interf_unaw_shift_tm1_mcs. LUT valid for mcs<=13, to be completed in the next
commit.
---
openair1/PHY/LTE_TRANSPORT/dlsch_demodulation.c | 17 ++++++++++-------
1 file changed, 10 insertions(+), 7 deletions(-)
diff --git a/openair1/PHY/LTE_TRANSPORT/dlsch_demodulation.c b/openair1/PHY/LTE_TRANSPORT/dlsch_demodulation.c
index 3cc15c6fc85..c72b1e5f77e 100644
--- a/openair1/PHY/LTE_TRANSPORT/dlsch_demodulation.c
+++ b/openair1/PHY/LTE_TRANSPORT/dlsch_demodulation.c
@@ -65,8 +65,10 @@ uint8_t interf_unaw_shift0=0;
uint8_t interf_unaw_shift1=0;
uint8_t interf_unaw_shift=0;
//inferference-free case
-unsigned char interf_unaw_shift_mcs[29]={5, 3, 4, 3, 3, 2, 1, 1, 2, 0, 1, 1, 1, 1, 0, 0,
- 1, 1, 1, 1, 0, 2, 1, 0, 1, 0, 1, 0, 0} ;
+unsigned char interf_unaw_shift_tm4_mcs[29]={5, 3, 4, 3, 3, 2, 1, 1, 2, 0, 1, 1, 1, 1, 0, 0,
+ 1, 1, 1, 1, 0, 2, 1, 0, 1, 0, 1, 0, 0} ;
+unsigned char interf_unaw_shift_tm1_mcs[29]={5, 5, 4, 3, 3, 3, 2, 2, 4, 4, 2, 3, 3, 3, 0, 0,
+ 1, 1, 1, 1, 0, 2, 1, 0, 1, 0, 1, 0, 0} ; // this is valid only till mcs13
/*
//original values from sebastion + same hand tuning
@@ -320,7 +322,8 @@ int rx_pdsch(PHY_VARS_UE *phy_vars_ue,
avgs = cmax(avgs,avg[(aatx<<1)+aarx]);
// avgs = cmax(avgs,avg[(aarx<<1)+aatx]);
- lte_ue_pdsch_vars[eNB_id]->log2_maxh = (log2_approx(avgs)/2) + interf_unaw_shift;
+ lte_ue_pdsch_vars[eNB_id]->log2_maxh = (log2_approx(avgs)/2) + interf_unaw_shift_tm1_mcs[dlsch0_harq->mcs];
+ // printf(" TM1 shift = %d\n",interf_unaw_shift_tm1_mcs[dlsch0_harq->mcs]);
// + log2_approx(frame_parms->nb_antennas_tx_eNB-1) //-1 because log2_approx counts the number of bits
// + log2_approx(frame_parms->nb_antennas_rx-1);
@@ -441,10 +444,10 @@ int rx_pdsch(PHY_VARS_UE *phy_vars_ue,
}
else
// to avoid tails in SNR/BLER curves
- lte_ue_pdsch_vars[eNB_id]->log2_maxh0 = (log2_approx(avg[0])/2)+interf_unaw_shift_mcs[dlsch0_harq->mcs];
- //printf("I-UA shift layer1 = %d\n",interf_unaw_shift_mcs[dlsch0_harq->mcs]);
- lte_ue_pdsch_vars[eNB_id]->log2_maxh1 = (log2_approx(avg[0])/2)+interf_unaw_shift_mcs[dlsch1_harq->mcs];
- //printf("I-UA shift layer2 = %d\n",interf_unaw_shift_mcs[dlsch1_harq->mcs] );
+ lte_ue_pdsch_vars[eNB_id]->log2_maxh0 = (log2_approx(avg[0])/2)+interf_unaw_shift_tm4_mcs[dlsch0_harq->mcs];
+ //printf("TM4 I-UA shift layer1 = %d\n",interf_unaw_shift_tm4_mcs[dlsch0_harq->mcs]);
+ lte_ue_pdsch_vars[eNB_id]->log2_maxh1 = (log2_approx(avg[0])/2)+interf_unaw_shift_tm4_mcs[dlsch1_harq->mcs];
+ //printf("TM4 I-UA shift layer2 = %d\n",interf_unaw_shift_tm4_mcs[dlsch1_harq->mcs] );
}
dlsch_channel_compensation_TM34(frame_parms,
--
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