Commit 950c1c06 authored by Gabriel's avatar Gabriel

Correction of dlsch channel calculation

parent 752b3052
......@@ -3375,9 +3375,16 @@ void dlsch_channel_level(int **dl_ch_estimates_ext,
symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
float one_over_nb_re = 0;
one_over_nb_re = 1/(nb_rb *12);
int16_t one_over_nb_re_q1_15 = (int16_t)(one_over_nb_re * (float)(1<<15) );
if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==0))
nre=8;
else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==1))
nre=10;
else
nre=12;
double one_over_nb_re = 0.0;
one_over_nb_re = 1/((double)(nb_rb*nre));
int16_t one_over_nb_re_q1_15 = (int16_t)(one_over_nb_re * (double)(1<<15) );
coeff128 = _mm_set_epi16(one_over_nb_re_q1_15,one_over_nb_re_q1_15,one_over_nb_re_q1_15,one_over_nb_re_q1_15,
one_over_nb_re_q1_15,one_over_nb_re_q1_15,one_over_nb_re_q1_15,one_over_nb_re_q1_15);
......@@ -3399,7 +3406,7 @@ void dlsch_channel_level(int **dl_ch_estimates_ext,
dl_ch128+=2;
}
else {
avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch128[2],dl_ch128[2]));
avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch128[2],_mm_srai_epi16(_mm_mulhi_epi16(dl_ch128[2], coeff128),15)));
dl_ch128+=3;
}
/*
......@@ -3411,18 +3418,10 @@ void dlsch_channel_level(int **dl_ch_estimates_ext,
*/
}
if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==0))
nre=8;
else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==1))
nre=10;
else
nre=12;
avg[(aatx<<1)+aarx] =(((int32_t*)&avg128D)[0] +
((int32_t*)&avg128D)[1] +
((int32_t*)&avg128D)[2] +
((int32_t*)&avg128D)[3]);
// printf("Channel level : %d\n",avg[(aatx<<1)+aarx]);
}
......
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