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Add support for MIMO 2x2 with USRP B210 at 20 MHz BW and 3/4 sampling rate

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Tested with B210 and Quectel RM500Q-GL
This commit is contained in:
luis_pereira87
2024-06-07 15:16:20 +01:00
parent 9055fabe9b
commit ce0f48d2b2
2 changed files with 13 additions and 1 deletions
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openair1/PHY/NR_TRANSPORT/nr_prach.c
+6
View File
@@ -316,6 +316,12 @@ void rx_nr_prach_ru(RU_t *ru,
dftlen >>= 1;
break;
case 23040:
// 20 MHz @ 23.04 Ms/s
Ncp = (Ncp * 3) / 4;
dftlen = (dftlen * 3) / 4;
break;
case 30720:
// 20, 25, 30 MHz @ 30.72 Ms/s
break;
openair1/PHY/NR_UE_TRANSPORT/nr_prach.c
+7 -1
View File
@@ -65,7 +65,7 @@ int32_t generate_nr_prach(PHY_VARS_NR_UE *ue, uint8_t gNB_id, int frame, uint8_t
c16_t prach[(4688 + 4 * 24576) * 2] __attribute__((aligned(32))) = {0};
int16_t prachF_tmp[(4688+4*24576)*4*2] __attribute__((aligned(32))) = {0};
int16_t Ncp = 0;
int Ncp = 0;
int prach_start, prach_sequence_length, i, prach_len, dftlen, mu, kbar, K, n_ra_prb, k, prachStartSymbol, sample_offset_slot;
fd_occasion = 0;
@@ -332,6 +332,12 @@ int32_t generate_nr_prach(PHY_VARS_NR_UE *ue, uint8_t gNB_id, int frame, uint8_t
dftlen >>= 1;
break;
case 23040:
// 20 MHz @ 23.04 Ms/s
Ncp = (Ncp * 3) / 4;
dftlen = (dftlen * 3) / 4;
break;
case 30720:
// 20, 25, 30 MHz @ 30.72 Ms/s
break;