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some whitespace fixes in openair1/PHY/MODULATION/nr_modulation.c

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This commit is contained in:
Thomas Schlichter
2021-02-10 09:10:22 +01:00
parent 14e84f8782
commit 97801299dc
1 changed files with 137 additions and 141 deletions
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openair1/PHY/MODULATION/nr_modulation.c
+137 -141
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@@ -24,98 +24,97 @@
//Table 6.3.1.5-1 Precoding Matrix W 1 layer 2 antenna ports 'n' = -1 and 'o' = -j
char nr_W_1l_2p[6][2][1] = {
{{'1'}, {'0'}},//pmi 0
{{'0'}, {'1'}},
{{'1'}, {'1'}},
{{'1'}, {'n'}},
{{'1'}, {'j'}},
{{'1'}, {'o'}}//pmi 5
{{'1'}, {'0'}},//pmi 0
{{'0'}, {'1'}},
{{'1'}, {'1'}},
{{'1'}, {'n'}},
{{'1'}, {'j'}},
{{'1'}, {'o'}}//pmi 5
};
//Table 6.3.1.5-3 Precoding Matrix W 1 layer 4 antenna ports 'n' = -1 and 'o' = -j
char nr_W_1l_4p[28][4][1] = {
{{'1'}, {'0'}, {'0'}, {'0'}},//pmi 0
{{'0'}, {'1'}, {'0'}, {'0'}},
{{'0'}, {'0'}, {'1'}, {'0'}},
{{'0'}, {'0'}, {'0'}, {'1'}},
{{'1'}, {'0'}, {'1'}, {'0'}},
{{'1'}, {'0'}, {'n'}, {'0'}},
{{'1'}, {'0'}, {'j'}, {'0'}},
{{'1'}, {'0'}, {'o'}, {'0'}},//pmi 7
{{'0'}, {'1'}, {'0'}, {'1'}},//pmi 8
{{'0'}, {'1'}, {'0'}, {'n'}},
{{'0'}, {'1'}, {'0'}, {'j'}},
{{'0'}, {'1'}, {'0'}, {'o'}},
{{'1'}, {'1'}, {'1'}, {'1'}},
{{'1'}, {'1'}, {'j'}, {'j'}},
{{'1'}, {'1'}, {'n'}, {'n'}},
{{'1'}, {'1'}, {'o'}, {'o'}},
{{'1'}, {'j'}, {'1'}, {'j'}},//pmi 16
{{'1'}, {'j'}, {'j'}, {'n'}},
{{'1'}, {'j'}, {'n'}, {'o'}},
{{'1'}, {'j'}, {'o'}, {'1'}},
{{'1'}, {'n'}, {'1'}, {'n'}},
{{'1'}, {'n'}, {'j'}, {'o'}},
{{'1'}, {'n'}, {'n'}, {'1'}},
{{'1'}, {'n'}, {'o'}, {'j'}},//pmi 23
{{'1'}, {'o'}, {'1'}, {'o'}},//pmi 24
{{'1'}, {'o'}, {'j'}, {'1'}},
{{'1'}, {'o'}, {'n'}, {'j'}},
{{'1'}, {'o'}, {'o'}, {'n'}}//pmi 27
{{'1'}, {'0'}, {'0'}, {'0'}},//pmi 0
{{'0'}, {'1'}, {'0'}, {'0'}},
{{'0'}, {'0'}, {'1'}, {'0'}},
{{'0'}, {'0'}, {'0'}, {'1'}},
{{'1'}, {'0'}, {'1'}, {'0'}},
{{'1'}, {'0'}, {'n'}, {'0'}},
{{'1'}, {'0'}, {'j'}, {'0'}},
{{'1'}, {'0'}, {'o'}, {'0'}},//pmi 7
{{'0'}, {'1'}, {'0'}, {'1'}},//pmi 8
{{'0'}, {'1'}, {'0'}, {'n'}},
{{'0'}, {'1'}, {'0'}, {'j'}},
{{'0'}, {'1'}, {'0'}, {'o'}},
{{'1'}, {'1'}, {'1'}, {'1'}},
{{'1'}, {'1'}, {'j'}, {'j'}},
{{'1'}, {'1'}, {'n'}, {'n'}},
{{'1'}, {'1'}, {'o'}, {'o'}},
{{'1'}, {'j'}, {'1'}, {'j'}},//pmi 16
{{'1'}, {'j'}, {'j'}, {'n'}},
{{'1'}, {'j'}, {'n'}, {'o'}},
{{'1'}, {'j'}, {'o'}, {'1'}},
{{'1'}, {'n'}, {'1'}, {'n'}},
{{'1'}, {'n'}, {'j'}, {'o'}},
{{'1'}, {'n'}, {'n'}, {'1'}},
{{'1'}, {'n'}, {'o'}, {'j'}},//pmi 23
{{'1'}, {'o'}, {'1'}, {'o'}},//pmi 24
{{'1'}, {'o'}, {'j'}, {'1'}},
{{'1'}, {'o'}, {'n'}, {'j'}},
{{'1'}, {'o'}, {'o'}, {'n'}}//pmi 27
};
//Table 6.3.1.5-4 Precoding Matrix W 2 antenna ports layers 2 'n' = -1 and 'o' = -j
char nr_W_2l_2p[3][2][2] = {
{{'1', '0'}, {'0', '1'}},//pmi 0
{{'1', '1'}, {'1', 'n'}},
{{'1', '1'}, {'j', 'o'}} //pmi 2
{{'1', '0'}, {'0', '1'}},//pmi 0
{{'1', '1'}, {'1', 'n'}},
{{'1', '1'}, {'j', 'o'}} //pmi 2
};
//Table 6.3.1.5-5 Precoding Matrix W 2 layers 4 antenna ports 'n' = -1 and 'o' = -j
char nr_W_2l_4p[22][4][2] = {
{{'1', '0'}, {'0', '1'}, {'0', '0'}, {'0', '0'}},//pmi 0
{{'1', '0'}, {'0', '0'}, {'0', '1'}, {'0', '0'}},
{{'1', '0'}, {'0', '0'}, {'0', '0'}, {'0', '1'}},
{{'0', '0'}, {'1', '0'}, {'0', '1'}, {'0', '0'}},//pmi 3
{{'0', '0'}, {'1', '0'}, {'0', '0'}, {'0', '1'}},//pmi 4
{{'0', '0'}, {'0', '0'}, {'1', '0'}, {'0', '1'}},
{{'1', '0'}, {'0', '1'}, {'1', '0'}, {'0', 'o'}},
{{'1', '0'}, {'0', '1'}, {'1', '0'}, {'0', 'j'}},
{{'1', '0'}, {'0', '1'}, {'o', '0'}, {'0', '1'}},//pmi 8
{{'1', '0'}, {'0', '1'}, {'o', '0'}, {'0', 'n'}},
{{'1', '0'}, {'0', '1'}, {'n', '0'}, {'0', 'o'}},
{{'1', '0'}, {'0', '1'}, {'n', '0'}, {'0', 'j'}},//pmi 11
{{'1', '0'}, {'0', '1'}, {'j', '0'}, {'0', '1'}},//pmi 12
{{'1', '0'}, {'0', '1'}, {'j', '0'}, {'0', 'n'}},
{{'1', '1'}, {'1', '1'}, {'1', 'n'}, {'1', 'n'}},
{{'1', '1'}, {'1', '1'}, {'j', 'o'}, {'j', 'o'}},//pmi 15
{{'1', '1'}, {'j', 'j'}, {'1', 'n'}, {'j', 'o'}},//pmi 16
{{'1', '1'}, {'j', 'j'}, {'j', 'o'}, {'n', '1'}},
{{'1', '1'}, {'n', 'n'}, {'1', 'n'}, {'n', '1'}},
{{'1', '1'}, {'n', 'n'}, {'j', 'o'}, {'o', 'j'}},//pmi 19
{{'1', '1'}, {'o', 'o'}, {'1', 'n'}, {'o', 'j'}},
{{'1', '1'}, {'o', 'o'}, {'j', 'o'}, {'1', 'n'}}//pmi 21
{{'1', '0'}, {'0', '1'}, {'0', '0'}, {'0', '0'}},//pmi 0
{{'1', '0'}, {'0', '0'}, {'0', '1'}, {'0', '0'}},
{{'1', '0'}, {'0', '0'}, {'0', '0'}, {'0', '1'}},
{{'0', '0'}, {'1', '0'}, {'0', '1'}, {'0', '0'}},//pmi 3
{{'0', '0'}, {'1', '0'}, {'0', '0'}, {'0', '1'}},//pmi 4
{{'0', '0'}, {'0', '0'}, {'1', '0'}, {'0', '1'}},
{{'1', '0'}, {'0', '1'}, {'1', '0'}, {'0', 'o'}},
{{'1', '0'}, {'0', '1'}, {'1', '0'}, {'0', 'j'}},
{{'1', '0'}, {'0', '1'}, {'o', '0'}, {'0', '1'}},//pmi 8
{{'1', '0'}, {'0', '1'}, {'o', '0'}, {'0', 'n'}},
{{'1', '0'}, {'0', '1'}, {'n', '0'}, {'0', 'o'}},
{{'1', '0'}, {'0', '1'}, {'n', '0'}, {'0', 'j'}},//pmi 11
{{'1', '0'}, {'0', '1'}, {'j', '0'}, {'0', '1'}},//pmi 12
{{'1', '0'}, {'0', '1'}, {'j', '0'}, {'0', 'n'}},
{{'1', '1'}, {'1', '1'}, {'1', 'n'}, {'1', 'n'}},
{{'1', '1'}, {'1', '1'}, {'j', 'o'}, {'j', 'o'}},//pmi 15
{{'1', '1'}, {'j', 'j'}, {'1', 'n'}, {'j', 'o'}},//pmi 16
{{'1', '1'}, {'j', 'j'}, {'j', 'o'}, {'n', '1'}},
{{'1', '1'}, {'n', 'n'}, {'1', 'n'}, {'n', '1'}},
{{'1', '1'}, {'n', 'n'}, {'j', 'o'}, {'o', 'j'}},//pmi 19
{{'1', '1'}, {'o', 'o'}, {'1', 'n'}, {'o', 'j'}},
{{'1', '1'}, {'o', 'o'}, {'j', 'o'}, {'1', 'n'}}//pmi 21
};
//Table 6.3.1.5-6 Precoding Matrix W 3 layers 4 antenna ports 'n' = -1 and 'o' = -j
char nr_W_3l_4p[7][4][3] = {
{{'1', '0', '0'}, {'0', '1', '0'}, {'0', '0', '1'},{'0', '0', '0'}},//pmi 0
{{'1', '0', '0'}, {'0', '1', '0'}, {'1', '0', '0'},{'0', '0', '1'}},
{{'1', '0', '0'}, {'0', '1', '0'}, {'n', '0', '0'},{'0', '0', '1'}},
{{'1', '1', '1'}, {'1', 'n', '1'}, {'1', '1', 'n'},{'1', 'n', 'n'}},//pmi 3
{{'1', '1', '1'}, {'1', 'n', '1'}, {'j', 'j', 'o'},{'j', 'o', 'o'}},//pmi 4
{{'1', '1', '1'}, {'n', '1', 'n'}, {'1', '1', 'n'},{'n', '1', '1'}},
{{'1', '1', '1'}, {'n', '1', 'n'}, {'j', 'j', 'o'},{'o', 'j', 'j'}}
{{'1', '0', '0'}, {'0', '1', '0'}, {'0', '0', '1'},{'0', '0', '0'}},//pmi 0
{{'1', '0', '0'}, {'0', '1', '0'}, {'1', '0', '0'},{'0', '0', '1'}},
{{'1', '0', '0'}, {'0', '1', '0'}, {'n', '0', '0'},{'0', '0', '1'}},
{{'1', '1', '1'}, {'1', 'n', '1'}, {'1', '1', 'n'},{'1', 'n', 'n'}},//pmi 3
{{'1', '1', '1'}, {'1', 'n', '1'}, {'j', 'j', 'o'},{'j', 'o', 'o'}},//pmi 4
{{'1', '1', '1'}, {'n', '1', 'n'}, {'1', '1', 'n'},{'n', '1', '1'}},
{{'1', '1', '1'}, {'n', '1', 'n'}, {'j', 'j', 'o'},{'o', 'j', 'j'}}
};
//Table 6.3.1.5-7 Precoding Matrix W 4 layers 4 antenna ports 'n' = -1 and 'o' = -j
char nr_W_4l_4p[5][4][4] = {
{{'1', '0', '0', '0'}, {'0', '1', '0', '0'}, {'0', '0', '1', '0'}, {'0', '0', '0', '1'}},//pmi 0
{{'1', '1', '0', '0'}, {'0', '0', '1', '1'}, {'1', 'n', '0', '0'}, {'0', '0', '1', 'n'}},
{{'1', '1', '0', '0'}, {'0', '0', '1', '1'}, {'j', 'o', '0', '0'}, {'0', '0', 'j', 'o'}},
{{'1', '1', '1', '1'}, {'1', 'n', '1', 'n'}, {'1', '1', 'n', 'n'}, {'1', 'n', 'n', '1'}},//pmi 3
{{'1', '1', '1', '1'}, {'1', 'n', '1', 'n'}, {'j', 'j', 'o', 'o'}, {'j', 'o', 'o', 'j'}}//pmi 4
{{'1', '0', '0', '0'}, {'0', '1', '0', '0'}, {'0', '0', '1', '0'}, {'0', '0', '0', '1'}},//pmi 0
{{'1', '1', '0', '0'}, {'0', '0', '1', '1'}, {'1', 'n', '0', '0'}, {'0', '0', '1', 'n'}},
{{'1', '1', '0', '0'}, {'0', '0', '1', '1'}, {'j', 'o', '0', '0'}, {'0', '0', 'j', 'o'}},
{{'1', '1', '1', '1'}, {'1', 'n', '1', 'n'}, {'1', '1', 'n', 'n'}, {'1', 'n', 'n', '1'}},//pmi 3
{{'1', '1', '1', '1'}, {'1', 'n', '1', 'n'}, {'j', 'j', 'o', 'o'}, {'j', 'o', 'o', 'j'}}//pmi 4
};
void nr_modulation(uint32_t *in,
@@ -133,7 +132,7 @@ void nr_modulation(uint32_t *in,
uint32_t i,j;
uint32_t bit_cnt;
uint64_t x,x1,x2;
#if defined(__SSE2__)
__m128i *nr_mod_table128;
__m128i *out128;
@@ -152,7 +151,7 @@ void nr_modulation(uint32_t *in,
// the bits that are left out
i = i*8/2;
nr_mod_table32 = (int32_t*) nr_qpsk_mod_table;
while (i<length/2){
while (i<length/2) {
idx = ((in_bytes[(i*2)/8]>>((i*2)&0x7)) & mask);
out32[i] = nr_mod_table32[idx];
i++;
@@ -174,7 +173,7 @@ void nr_modulation(uint32_t *in,
out64[i] = nr_16qam_byte_mod_table[in_bytes[i]];
// the bits that are left out
i = i*8/4;
while (i<length/4){
while (i<length/4) {
idx = ((in_bytes[(i*4)/8]>>((i*4)&0x7)) & mask);
out32[i] = nr_16qam_mod_table[idx];
i++;
@@ -184,7 +183,7 @@ void nr_modulation(uint32_t *in,
case 6:
j = 0;
for (i=0; i<length/192; i++) {
x = in64[i*3];
x = in64[i*3];
x1 = x&4095;
out64[j++] = nr_64qam_mod_table[x1];
x1 = (x>>12)&4095;
@@ -236,7 +235,7 @@ void nr_modulation(uint32_t *in,
bit_cnt += 24;
}
return;
case 8:
nr_mod_table32 = (int32_t*) nr_256qam_mod_table;
for (i=0; i<length/8; i++)
@@ -247,20 +246,20 @@ void nr_modulation(uint32_t *in,
break;
}
AssertFatal(false,"Invalid or unsupported modulation order %d\n",mod_order);
}
void nr_layer_mapping(int16_t **mod_symbs,
uint8_t n_layers,
uint16_t n_symbs,
int16_t **tx_layers) {
uint8_t n_layers,
uint16_t n_symbs,
int16_t **tx_layers)
{
LOG_D(PHY,"Doing layer mapping for %d layers, %d symbols\n",n_layers,n_symbs);
switch (n_layers) {
case 1:
memcpy((void*)tx_layers[0], (void*)mod_symbs[0], (n_symbs<<1)*sizeof(int16_t));
break;
break;
case 2:
case 3:
@@ -270,7 +269,7 @@ void nr_layer_mapping(int16_t **mod_symbs,
tx_layers[l][i<<1] = mod_symbs[0][(n_layers*i+l)<<1];
tx_layers[l][(i<<1)+1] = mod_symbs[0][((n_layers*i+l)<<1)+1];
}
break;
break;
case 5:
for (int i=0; i<n_symbs>>1; i++)
@@ -282,8 +281,8 @@ void nr_layer_mapping(int16_t **mod_symbs,
for (int l=2; l<5; l++) {
tx_layers[l][i<<1] = mod_symbs[1][(3*i+l)<<1];
tx_layers[l][(i<<1)+1] = mod_symbs[1][((3*i+l)<<1)+1];
}
break;
}
break;
case 6:
for (int q=0; q<2; q++)
@@ -292,7 +291,7 @@ void nr_layer_mapping(int16_t **mod_symbs,
tx_layers[l][i<<1] = mod_symbs[q][(3*i+l)<<1];
tx_layers[l][(i<<1)+1] = mod_symbs[q][((3*i+l)<<1)+1];
}
break;
break;
case 7:
for (int i=0; i<n_symbs/3; i++)
@@ -305,7 +304,7 @@ void nr_layer_mapping(int16_t **mod_symbs,
tx_layers[l][i<<1] = mod_symbs[0][((i<<2)+l)<<1];
tx_layers[l][(i<<1)+1] = mod_symbs[0][(((i<<2)+l)<<1)+1];
}
break;
break;
case 8:
for (int q=0; q<2; q++)
@@ -314,42 +313,42 @@ void nr_layer_mapping(int16_t **mod_symbs,
tx_layers[l][i<<1] = mod_symbs[q][((i<<2)+l)<<1];
tx_layers[l][(i<<1)+1] = mod_symbs[q][(((i<<2)+l)<<1)+1];
}
break;
break;
default:
AssertFatal(0, "Invalid number of layers %d\n", n_layers);
default:
AssertFatal(0, "Invalid number of layers %d\n", n_layers);
}
}
void nr_ue_layer_mapping(NR_UE_ULSCH_t **ulsch_ue,
uint8_t n_layers,
uint16_t n_symbs,
int16_t **tx_layers) {
uint8_t n_layers,
uint16_t n_symbs,
int16_t **tx_layers)
{
int16_t *mod_symbs;
switch (n_layers) {
case 1:
mod_symbs = (int16_t *)ulsch_ue[0]->d_mod;
for (int i=0; i<n_symbs; i++){
for (int i=0; i<n_symbs; i++) {
tx_layers[0][i<<1] = (mod_symbs[i<<1]*AMP)>>15;
tx_layers[0][(i<<1)+1] = (mod_symbs[(i<<1)+1]*AMP)>>15;
}
break;
break;
case 2:
case 3:
case 4:
mod_symbs = (int16_t *)ulsch_ue[0]->d_mod;
for (int i=0; i<n_symbs/n_layers; i++){
for (int i=0; i<n_symbs/n_layers; i++) {
for (int l=0; l<n_layers; l++) {
tx_layers[l][i<<1] = (mod_symbs[(n_layers*i+l)<<1]*AMP)>>15;
tx_layers[l][(i<<1)+1] = (mod_symbs[((n_layers*i+l)<<1)+1]*AMP)>>15;
}
}
break;
break;
case 5:
mod_symbs = (int16_t *)ulsch_ue[0]->d_mod;
@@ -367,11 +366,10 @@ void nr_ue_layer_mapping(NR_UE_ULSCH_t **ulsch_ue,
tx_layers[l][i<<1] = (mod_symbs[(3*i+l)<<1]*AMP)>>15;
tx_layers[l][(i<<1)+1] = (mod_symbs[((3*i+l)<<1)+1]*AMP)>>15;
}
break;
break;
case 6:
for (int q=0; q<2; q++){
for (int q=0; q<2; q++) {
mod_symbs = (int16_t *)ulsch_ue[q]->d_mod;
for (int i=0; i<n_symbs/3; i++)
@@ -380,7 +378,7 @@ void nr_ue_layer_mapping(NR_UE_ULSCH_t **ulsch_ue,
tx_layers[l][(i<<1)+1] = (mod_symbs[((3*i+l)<<1)+1]*AMP)>>15;
}
}
break;
break;
case 7:
mod_symbs = (int16_t *)ulsch_ue[1]->d_mod;
@@ -398,11 +396,10 @@ void nr_ue_layer_mapping(NR_UE_ULSCH_t **ulsch_ue,
tx_layers[l][i<<1] = (mod_symbs[((i<<2)+l)<<1]*AMP)>>15;
tx_layers[l][(i<<1)+1] = (mod_symbs[(((i<<2)+l)<<1)+1]*AMP)>>15;
}
break;
break;
case 8:
for (int q=0; q<2; q++){
for (int q=0; q<2; q++) {
mod_symbs = (int16_t *)ulsch_ue[q]->d_mod;
for (int i=0; i<n_symbs>>2; i++)
@@ -411,10 +408,10 @@ void nr_ue_layer_mapping(NR_UE_ULSCH_t **ulsch_ue,
tx_layers[l][(i<<1)+1] = (mod_symbs[(((i<<2)+l)<<1)+1]*AMP)>>15;
}
}
break;
break;
default:
AssertFatal(0, "Invalid number of layers %d\n", n_layers);
default:
AssertFatal(0, "Invalid number of layers %d\n", n_layers);
}
}
@@ -598,8 +595,8 @@ void nr_dft(int32_t *z, int32_t *d, uint32_t Msc_PUSCH)
}
void init_symbol_rotation(NR_DL_FRAME_PARMS *fp,uint64_t CarrierFreq) {
void init_symbol_rotation(NR_DL_FRAME_PARMS *fp,uint64_t CarrierFreq)
{
const int nsymb = fp->symbols_per_slot * fp->slots_per_frame/10;
const double Tc=(1/480e3/4096);
const double Nu=2048*64*(1/(float)(1<<fp->numerology_index));
@@ -616,57 +613,56 @@ void init_symbol_rotation(NR_DL_FRAME_PARMS *fp,uint64_t CarrierFreq) {
fp->symbol_rotation[1]=(int16_t)floor(exp_im*32767);
LOG_I(PHY,"Doing symbol rotation calculation for gNB TX/RX, f0 %f Hz, Nsymb %d\n",f0,nsymb);
LOG_I(PHY,"Symbol rotation %d/%d => (%d,%d)\n",0,nsymb,fp->symbol_rotation[0],fp->symbol_rotation[1]);
for (int l=1;l<nsymb;l++) {
for (int l=1; l<nsymb; l++) {
if (l==(7*(1<<fp->numerology_index))) Ncp=Ncp0;
else Ncp=Ncp1;
tl += (Nu+Ncpm1)*Tc;
tl += (Nu+Ncpm1)*Tc;
poff = 2*M_PI*(tl + (Ncp*Tc))*f0;
exp_re = cos(poff);
exp_im = sin(-poff);
fp->symbol_rotation[l<<1]=(int16_t)floor(exp_re*32767);
fp->symbol_rotation[1+(l<<1)]=(int16_t)floor(exp_im*32767);
LOG_I(PHY,"Symbol rotation %d/%d => tl %f (%d,%d) (%f)\n",l,nsymb,tl,fp->symbol_rotation[l<<1],fp->symbol_rotation[1+(l<<1)],
(poff/2/M_PI)-floor(poff/2/M_PI));
LOG_I(PHY,"Symbol rotation %d/%d => tl %f (%d,%d) (%f)\n", l, nsymb, tl, fp->symbol_rotation[l<<1], fp->symbol_rotation[1+(l<<1)], (poff/2/M_PI)-floor(poff/2/M_PI));
Ncpm1=Ncp;
}
}
int nr_layer_precoder(int16_t **datatx_F_precoding, char *prec_matrix, uint8_t n_layers, int32_t re_offset)
{
int32_t precodatatx_F = 0;
for (int al = 0; al<n_layers; al++){
int32_t precodatatx_F = 0;
int16_t antenna_re = datatx_F_precoding[al][re_offset<<1];
int16_t antenna_im = datatx_F_precoding[al][(re_offset<<1) +1];
for (int al = 0; al<n_layers; al++) {
int16_t antenna_re = datatx_F_precoding[al][re_offset<<1];
int16_t antenna_im = datatx_F_precoding[al][(re_offset<<1) +1];
switch (prec_matrix[al]) {
switch (prec_matrix[al]) {
case '0': //multiply by zero
break;
case '0': //multiply by zero
break;
case '1': //multiply by 1
((int16_t *) &precodatatx_F)[0] += antenna_re;
((int16_t *) &precodatatx_F)[1] += antenna_im;
break;
case '1': //multiply by 1
((int16_t *) &precodatatx_F)[0] += antenna_re;
((int16_t *) &precodatatx_F)[1] += antenna_im;
break;
case 'n': // multiply by -1
((int16_t *) &precodatatx_F)[0] -= antenna_re;
((int16_t *) &precodatatx_F)[1] -= antenna_im;
break;
case 'n': // multiply by -1
((int16_t *) &precodatatx_F)[0] -= antenna_re;
((int16_t *) &precodatatx_F)[1] -= antenna_im;
break;
case 'j': //
((int16_t *) &precodatatx_F)[0] -= antenna_im;
((int16_t *) &precodatatx_F)[1] += antenna_re;
break;
case 'j': //
((int16_t *) &precodatatx_F)[0] -= antenna_im;
((int16_t *) &precodatatx_F)[1] += antenna_re;
break;
case 'o': // -j
((int16_t *) &precodatatx_F)[0] += antenna_im;
((int16_t *) &precodatatx_F)[1] -= antenna_re;
break;
}
}
case 'o': // -j
((int16_t *) &precodatatx_F)[0] += antenna_im;
((int16_t *) &precodatatx_F)[1] -= antenna_re;
break;
}
}
return precodatatx_F;
return precodatatx_F;
// normalize
/* ((int16_t *)precodatatx_F)[0] = (int16_t)((((int16_t *)precodatatx_F)[0]*ONE_OVER_SQRT2_Q15)>>15);
((int16_t *)precodatatx_F)[1] = (int16_t)((((int16_t *)precodatatx_F)[1]*ONE_OVER_SQRT2_Q15)>>15);*/