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Commit f211d26d authored by Sakthivel Velumani's avatar Sakthivel Velumani
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Code cleanup

parent 391a5eee
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Showing with 37 additions and 52 deletions
openair1/PHY/NR_TRANSPORT/nr_pss.c
View file @ f211d26d
...@@ -30,44 +30,36 @@ int nr_generate_pss( int32_t *txdataF, ...@@ -30,44 +30,36 @@ int nr_generate_pss( int32_t *txdataF,
nfapi_nr_config_request_scf_t* config, nfapi_nr_config_request_scf_t* config,
NR_DL_FRAME_PARMS *frame_parms) NR_DL_FRAME_PARMS *frame_parms)
{ {
int i,k,l,m;
int16_t a;
int16_t d_pss[NR_PSS_LENGTH];
int16_t x[NR_PSS_LENGTH]; int16_t x[NR_PSS_LENGTH];
const int x_initial[7] = {0, 1, 1 , 0, 1, 1, 1}; const int x_initial[7] = {0, 1, 1 , 0, 1, 1, 1};
uint8_t Nid2 = config->cell_config.phy_cell_id.value % 3;
/// Sequence generation /// Sequence generation
for (i=0; i < 7; i++) for (int i=0; i < 7; i++)
x[i] = x_initial[i]; x[i] = x_initial[i];
for (i=0; i < (NR_PSS_LENGTH - 7); i++) { for (int i=0; i < (NR_PSS_LENGTH - 7); i++) {
x[i+7] = (x[i + 4] + x[i]) %2; x[i+7] = (x[i + 4] + x[i]) %2;
} }
for (i=0; i < NR_PSS_LENGTH; i++) {
m = (i + 43*Nid2)%(NR_PSS_LENGTH);
d_pss[i] = (1 - 2*x[m]) * 23170;
}
#ifdef NR_PSS_DEBUG #ifdef NR_PSS_DEBUG
write_output("d_pss.m", "d_pss", (void*)d_pss, NR_PSS_LENGTH, 1, 0); write_output("d_pss.m", "d_pss", (void*)d_pss, NR_PSS_LENGTH, 1, 0);
printf("PSS: ofdm_symbol_size %d, first_carrier_offset %d\n",frame_parms->ofdm_symbol_size,frame_parms->first_carrier_offset); printf("PSS: ofdm_symbol_size %d, first_carrier_offset %d\n",frame_parms->ofdm_symbol_size,frame_parms->first_carrier_offset);
#endif #endif
/// Resource mapping /// Resource mapping
a = amp;
// PSS occupies a predefined position (subcarriers 56-182, symbol 0) within the SSB block starting from // PSS occupies a predefined position (subcarriers 56-182, symbol 0) within the SSB block starting from
k = frame_parms->first_carrier_offset + frame_parms->ssb_start_subcarrier + 56; //and int k = frame_parms->first_carrier_offset + frame_parms->ssb_start_subcarrier + 56; //and
if (k>= frame_parms->ofdm_symbol_size) k-=frame_parms->ofdm_symbol_size; if (k>= frame_parms->ofdm_symbol_size) k-=frame_parms->ofdm_symbol_size;
l = ssb_start_symbol; int l = ssb_start_symbol;
for (m = 0; m < NR_PSS_LENGTH; m++) { uint8_t Nid2 = config->cell_config.phy_cell_id.value % 3;
for (int i = 0; i < NR_PSS_LENGTH; i++) {
int m = (i + 43*Nid2)%(NR_PSS_LENGTH);
int16_t d_pss = (1 - 2*x[m]) * 23170;
// printf("pss: writing position k %d / %d\n",k,frame_parms->ofdm_symbol_size); // printf("pss: writing position k %d / %d\n",k,frame_parms->ofdm_symbol_size);
((int16_t*)txdataF)[2*(l*frame_parms->ofdm_symbol_size + k)] = (a * d_pss[m]) >> 15; ((int16_t*)txdataF)[2*(l*frame_parms->ofdm_symbol_size + k)] = (((int16_t)amp) * d_pss) >> 15;
k++; k++;
if (k >= frame_parms->ofdm_symbol_size) if (k >= frame_parms->ofdm_symbol_size)
......
openair1/PHY/NR_TRANSPORT/nr_sss.c
View file @ f211d26d
...@@ -29,36 +29,28 @@ int nr_generate_sss( int32_t *txdataF, ...@@ -29,36 +29,28 @@ int nr_generate_sss( int32_t *txdataF,
nfapi_nr_config_request_scf_t* config, nfapi_nr_config_request_scf_t* config,
NR_DL_FRAME_PARMS *frame_parms) NR_DL_FRAME_PARMS *frame_parms)
{ {
int i,k,l; int16_t x0[NR_SSS_LENGTH];
int m0, m1; int16_t x1[NR_SSS_LENGTH];
int Nid, Nid1, Nid2;
//int16_t a;
int16_t d_sss[NR_SSS_LENGTH];
int16_t x0[NR_SSS_LENGTH], x1[NR_SSS_LENGTH];
const int x0_initial[7] = { 1, 0, 0, 0, 0, 0, 0 }; const int x0_initial[7] = { 1, 0, 0, 0, 0, 0, 0 };
const int x1_initial[7] = { 1, 0, 0, 0, 0, 0, 0 }; const int x1_initial[7] = { 1, 0, 0, 0, 0, 0, 0 };
/// Sequence generation /// Sequence generation
Nid = config->cell_config.phy_cell_id.value; int Nid = config->cell_config.phy_cell_id.value;
Nid2 = Nid % 3; int Nid2 = Nid % 3;
Nid1 = (Nid - Nid2)/3; int Nid1 = (Nid - Nid2)/3;
for ( i=0 ; i < 7 ; i++) { for (int i=0; i < 7; i++) {
x0[i] = x0_initial[i]; x0[i] = x0_initial[i];
x1[i] = x1_initial[i]; x1[i] = x1_initial[i];
} }
for ( i=0 ; i < NR_SSS_LENGTH - 7 ; i++) { for (int i=0; i < NR_SSS_LENGTH - 7; i++) {
x0[i+7] = (x0[i + 4] + x0[i]) % 2; x0[i+7] = (x0[i + 4] + x0[i]) % 2;
x1[i+7] = (x1[i + 1] + x1[i]) % 2; x1[i+7] = (x1[i + 1] + x1[i]) % 2;
} }
m0 = 15*(Nid1/112) + (5*Nid2); int m0 = 15*(Nid1/112) + (5*Nid2);
m1 = Nid1 % 112; int m1 = Nid1 % 112;
for (i = 0; i < NR_SSS_LENGTH ; i++) {
d_sss[i] = (1 - 2*x0[(i + m0) % NR_SSS_LENGTH] ) * (1 - 2*x1[(i + m1) % NR_SSS_LENGTH] ) * 23170;
}
#ifdef NR_SSS_DEBUG #ifdef NR_SSS_DEBUG
write_output("d_sss.m", "d_sss", (void*)d_sss, NR_SSS_LENGTH, 1, 1); write_output("d_sss.m", "d_sss", (void*)d_sss, NR_SSS_LENGTH, 1, 1);
...@@ -67,11 +59,12 @@ int nr_generate_sss( int32_t *txdataF, ...@@ -67,11 +59,12 @@ int nr_generate_sss( int32_t *txdataF,
/// Resource mapping /// Resource mapping
// SSS occupies a predefined position (subcarriers 56-182, symbol 2) within the SSB block starting from // SSS occupies a predefined position (subcarriers 56-182, symbol 2) within the SSB block starting from
k = frame_parms->first_carrier_offset + frame_parms->ssb_start_subcarrier + 56; //and int k = frame_parms->first_carrier_offset + frame_parms->ssb_start_subcarrier + 56; //and
l = ssb_start_symbol + 2; int l = ssb_start_symbol + 2;
for (int m = 0; m < NR_SSS_LENGTH; m++) { for (int i = 0; i < NR_SSS_LENGTH; i++) {
((int16_t*)txdataF)[2*(l*frame_parms->ofdm_symbol_size + k)] = (amp * d_sss[m]) >> 15; int16_t d_sss = (1 - 2*x0[(i + m0) % NR_SSS_LENGTH] ) * (1 - 2*x1[(i + m1) % NR_SSS_LENGTH] ) * 23170;
((int16_t*)txdataF)[2*(l*frame_parms->ofdm_symbol_size + k)] = (((int16_t)amp) * d_sss) >> 15;
k++; k++;
if (k >= frame_parms->ofdm_symbol_size) if (k >= frame_parms->ofdm_symbol_size)
......
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