#include "PHY/defs_gNB.h" #include "PHY/phy_extern.h" #include "nr_transport_proto.h" #include "PHY/impl_defs_top.h" #include "PHY/NR_TRANSPORT/nr_sch_dmrs.h" #include "PHY/NR_REFSIG/dmrs_nr.h" #include "PHY/NR_REFSIG/ptrs_nr.h" #include "PHY/NR_ESTIMATION/nr_ul_estimation.h" #include "PHY/defs_nr_common.h" //#define DEBUG_CH_COMP //#define DEBUG_RB_EXT //#define DEBUG_CH_MAG void nr_idft(uint32_t *z, uint32_t Msc_PUSCH) { #if defined(__x86_64__) || defined(__i386__) __m128i idft_in128[1][1200], idft_out128[1][1200]; __m128i norm128; #elif defined(__arm__) int16x8_t idft_in128[1][1200], idft_out128[1][1200]; int16x8_t norm128; #endif int16_t *idft_in0 = (int16_t*)idft_in128[0], *idft_out0 = (int16_t*)idft_out128[0]; int i, ip; LOG_T(PHY,"Doing lte_idft for Msc_PUSCH %d\n",Msc_PUSCH); // conjugate input for (i = 0; i < (Msc_PUSCH>>2); i++) { #if defined(__x86_64__)||defined(__i386__) *&(((__m128i*)z)[i]) = _mm_sign_epi16(*&(((__m128i*)z)[i]), *(__m128i*)&conjugate2[0]); #elif defined(__arm__) *&(((int16x8_t*)z)[i]) = vmulq_s16(*&(((int16x8_t*)z)[i]), *(int16x8_t*)&conjugate2[0]); #endif } for (i=0,ip=0; i<Msc_PUSCH; i++, ip+=4) { ((uint32_t*)idft_in0)[ip+0] = z[i]; } switch (Msc_PUSCH) { case 12: dft12((int16_t *)idft_in0, (int16_t *)idft_out0); #if defined(__x86_64__)||defined(__i386__) norm128 = _mm_set1_epi16(9459); #elif defined(__arm__) norm128 = vdupq_n_s16(9459); #endif for (i = 0; i < 12; i++) { #if defined(__x86_64__)||defined(__i386__) ((__m128i*)idft_out0)[i] = _mm_slli_epi16(_mm_mulhi_epi16(((__m128i*)idft_out0)[i], norm128), 1); #elif defined(__arm__) ((int16x8_t*)idft_out0)[i] = vqdmulhq_s16(((int16x8_t*)idft_out0)[i], norm128); #endif } break; case 24: dft24(idft_in0, idft_out0, 1); break; case 36: dft36(idft_in0, idft_out0, 1); break; case 48: dft48(idft_in0, idft_out0, 1); break; case 60: dft60(idft_in0, idft_out0, 1); break; case 72: dft72(idft_in0, idft_out0, 1); break; case 96: dft96(idft_in0, idft_out0, 1); break; case 108: dft108(idft_in0, idft_out0, 1); break; case 120: dft120(idft_in0, idft_out0, 1); break; case 144: dft144(idft_in0, idft_out0, 1); break; case 180: dft180(idft_in0, idft_out0, 1); break; case 192: dft192(idft_in0, idft_out0, 1); break; case 216: dft216(idft_in0, idft_out0, 1); break; case 240: dft240(idft_in0, idft_out0, 1); break; case 288: dft288(idft_in0, idft_out0, 1); break; case 300: dft300(idft_in0, idft_out0, 1); break; case 324: dft324((int16_t*)idft_in0, (int16_t*)idft_out0, 1); break; case 360: dft360((int16_t*)idft_in0, (int16_t*)idft_out0, 1); break; case 384: dft384((int16_t*)idft_in0, (int16_t*)idft_out0, 1); break; case 432: dft432((int16_t*)idft_in0, (int16_t*)idft_out0, 1); break; case 480: dft480((int16_t*)idft_in0, (int16_t*)idft_out0, 1); break; case 540: dft540((int16_t*)idft_in0, (int16_t*)idft_out0, 1); break; case 576: dft576((int16_t*)idft_in0, (int16_t*)idft_out0, 1); break; case 600: dft600((int16_t*)idft_in0, (int16_t*)idft_out0, 1); break; case 648: dft648((int16_t*)idft_in0, (int16_t*)idft_out0, 1); break; case 720: dft720((int16_t*)idft_in0, (int16_t*)idft_out0, 1); break; case 768: dft768((int16_t*)idft_in0, (int16_t*)idft_out0, 1); break; case 864: dft864((int16_t*)idft_in0, (int16_t*)idft_out0, 1); break; case 900: dft900((int16_t*)idft_in0, (int16_t*)idft_out0, 1); break; case 960: dft960((int16_t*)idft_in0, (int16_t*)idft_out0, 1); break; case 972: dft972((int16_t*)idft_in0, (int16_t*)idft_out0, 1); break; case 1080: dft1080((int16_t*)idft_in0, (int16_t*)idft_out0, 1); break; case 1152: dft1152((int16_t*)idft_in0, (int16_t*)idft_out0, 1); break; case 1200: dft1200(idft_in0, idft_out0, 1); break; default: // should not be reached LOG_E( PHY, "Unsupported Msc_PUSCH value of %"PRIu16"\n", Msc_PUSCH ); return; } for (i = 0, ip = 0; i < Msc_PUSCH; i++, ip+=4) { z[i] = ((uint32_t*)idft_out0)[ip]; } // conjugate output for (i = 0; i < (Msc_PUSCH>>2); i++) { #if defined(__x86_64__) || defined(__i386__) ((__m128i*)z)[i] = _mm_sign_epi16(((__m128i*)z)[i], *(__m128i*)&conjugate2[0]); #elif defined(__arm__) *&(((int16x8_t*)z)[i]) = vmulq_s16(*&(((int16x8_t*)z)[i]), *(int16x8_t*)&conjugate2[0]); #endif } #if defined(__x86_64__) || defined(__i386__) _mm_empty(); _m_empty(); #endif } void nr_ulsch_extract_rbs_single(int32_t **rxdataF, NR_gNB_PUSCH *pusch_vars, unsigned char symbol, uint8_t is_dmrs_symbol, nfapi_nr_pusch_pdu_t *pusch_pdu, NR_DL_FRAME_PARMS *frame_parms) { unsigned short start_re, re, nb_re_pusch; unsigned char aarx; uint8_t K_ptrs; uint32_t rxF_ext_index = 0; uint32_t ul_ch0_ext_index = 0; uint32_t ul_ch0_index = 0; uint32_t ul_ch0_ptrs_ext_index = 0; uint32_t ul_ch0_ptrs_index = 0; uint8_t is_ptrs_symbol_flag,k_prime; uint16_t n=0, num_ptrs_symbols; int16_t *rxF,*rxF_ext; int *ul_ch0,*ul_ch0_ext; int *ul_ch0_ptrs,*ul_ch0_ptrs_ext; uint16_t n_rnti = pusch_pdu->rnti; uint8_t delta = 0; #ifdef DEBUG_RB_EXT printf("--------------------symbol = %d-----------------------\n", symbol); printf("--------------------ch_ext_index = %d-----------------------\n", symbol*NR_NB_SC_PER_RB * pusch_pdu->rb_size); #endif uint8_t is_dmrs_re; start_re = (frame_parms->first_carrier_offset + (pusch_pdu->rb_start * NR_NB_SC_PER_RB))%frame_parms->ofdm_symbol_size; nb_re_pusch = NR_NB_SC_PER_RB * pusch_pdu->rb_size; is_ptrs_symbol_flag = 0; num_ptrs_symbols = 0; for (aarx = 0; aarx < frame_parms->nb_antennas_rx; aarx++) { rxF = (int16_t *)&rxdataF[aarx][symbol * frame_parms->ofdm_symbol_size]; rxF_ext = (int16_t *)&pusch_vars->rxdataF_ext[aarx][symbol * nb_re_pusch]; // [hna] rxdataF_ext isn't contiguous in order to solve an alignment problem ib llr computation in case of mod_order = 4, 6 ul_ch0 = &pusch_vars->ul_ch_estimates[aarx][pusch_vars->dmrs_symbol*frame_parms->ofdm_symbol_size]; // update channel estimates if new dmrs symbol are available ul_ch0_ext = &pusch_vars->ul_ch_estimates_ext[aarx][symbol*nb_re_pusch]; ul_ch0_ptrs = &pusch_vars->ul_ch_ptrs_estimates[aarx][pusch_vars->ptrs_symbol_index*frame_parms->ofdm_symbol_size]; // update channel estimates if new dmrs symbol are available ul_ch0_ptrs_ext = &pusch_vars->ul_ch_ptrs_estimates_ext[aarx][symbol*nb_re_pusch]; n = 0; k_prime = 0; for (re = 0; re < nb_re_pusch; re++) { if (is_dmrs_symbol) is_dmrs_re = (re == get_dmrs_freq_idx_ul(n, k_prime, delta, pusch_pdu->dmrs_config_type)); else is_dmrs_re = 0; if ( ((pusch_pdu->pdu_bit_map)>>2)& 0x01 ) { K_ptrs = (pusch_pdu->pusch_ptrs.ptrs_freq_density)?4:2; is_ptrs_symbol_flag = is_ptrs_symbol(symbol, (start_re + re)%frame_parms->ofdm_symbol_size, n_rnti, pusch_pdu->rb_size, pusch_pdu->nr_of_symbols, aarx, K_ptrs, pusch_vars->ptrs_symbols, start_re, frame_parms->ofdm_symbol_size, pusch_pdu->dmrs_config_type, pusch_pdu->pusch_ptrs.ptrs_ports_list[0].ptrs_re_offset); if (is_ptrs_symbol_flag == 1) num_ptrs_symbols++; } #ifdef DEBUG_RB_EXT printf("re = %d, symbol = %d\n", re, symbol); #endif if ( is_dmrs_re == 0 && is_ptrs_symbol_flag == 0) { rxF_ext[rxF_ext_index] = (rxF[ ((start_re + re)*2) % (frame_parms->ofdm_symbol_size*2)]); rxF_ext[rxF_ext_index + 1] = (rxF[(((start_re + re)*2) + 1) % (frame_parms->ofdm_symbol_size*2)]); ul_ch0_ext[ul_ch0_ext_index] = ul_ch0[ul_ch0_index]; ul_ch0_ptrs_ext[ul_ch0_ptrs_ext_index] = ul_ch0_ptrs[ul_ch0_ptrs_index]; #ifdef DEBUG_RB_EXT printf("rxF_ext[%d] = (%d,%d)\n", rxF_ext_index>>1, rxF_ext[rxF_ext_index],rxF_ext[rxF_ext_index+1]); #endif ul_ch0_ext_index++; ul_ch0_ptrs_ext_index++; rxF_ext_index +=2; } else { k_prime++; k_prime&=1; n+=(k_prime)?0:1; } ul_ch0_index++; ul_ch0_ptrs_index++; } } pusch_vars->ptrs_sc_per_ofdm_symbol = num_ptrs_symbols; } void nr_ulsch_scale_channel(int **ul_ch_estimates_ext, NR_DL_FRAME_PARMS *frame_parms, NR_gNB_ULSCH_t **ulsch_gNB, uint8_t symbol, uint8_t is_dmrs_symbol, unsigned short nb_rb, pusch_dmrs_type_t pusch_dmrs_type) { #if defined(__x86_64__)||defined(__i386__) short rb, ch_amp; unsigned char aatx,aarx; __m128i *ul_ch128, ch_amp128; // Determine scaling amplitude based the symbol ch_amp = 1024*8; //((pilots) ? (ulsch_gNB[0]->sqrt_rho_b) : (ulsch_gNB[0]->sqrt_rho_a)); LOG_D(PHY,"Scaling PUSCH Chest in OFDM symbol %d by %d, pilots %d nb_rb %d NCP %d symbol %d\n", symbol, ch_amp, is_dmrs_symbol, nb_rb, frame_parms->Ncp, symbol); // printf("Scaling PUSCH Chest in OFDM symbol %d by %d\n",symbol_mod,ch_amp); ch_amp128 = _mm_set1_epi16(ch_amp); // Q3.13 for (aatx=0; aatx < frame_parms->nb_antenna_ports_gNB; aatx++) { for (aarx=0; aarx < frame_parms->nb_antennas_rx; aarx++) { ul_ch128 = (__m128i *)&ul_ch_estimates_ext[aarx][symbol*nb_rb*NR_NB_SC_PER_RB]; if (is_dmrs_symbol==1){ if (pusch_dmrs_type == pusch_dmrs_type1) nb_rb = nb_rb>>1; else nb_rb = (2*nb_rb)/3; } for (rb=0;rb<nb_rb;rb++) { ul_ch128[0] = _mm_mulhi_epi16(ul_ch128[0], ch_amp128); ul_ch128[0] = _mm_slli_epi16(ul_ch128[0], 3); ul_ch128[1] = _mm_mulhi_epi16(ul_ch128[1], ch_amp128); ul_ch128[1] = _mm_slli_epi16(ul_ch128[1], 3); if (is_dmrs_symbol) { ul_ch128+=2; } else { ul_ch128[2] = _mm_mulhi_epi16(ul_ch128[2], ch_amp128); ul_ch128[2] = _mm_slli_epi16(ul_ch128[2], 3); ul_ch128+=3; } } } } #endif } //compute average channel_level on each (TX,RX) antenna pair void nr_ulsch_channel_level(int **ul_ch_estimates_ext, NR_DL_FRAME_PARMS *frame_parms, int32_t *avg, uint8_t symbol, uint32_t len, unsigned short nb_rb) { #if defined(__x86_64__)||defined(__i386__) short rb; unsigned char aatx, aarx; __m128i *ul_ch128, avg128U; int16_t x = factor2(len); int16_t y = (len)>>x; for (aatx = 0; aatx < frame_parms->nb_antennas_tx; aatx++) for (aarx = 0; aarx < frame_parms->nb_antennas_rx; aarx++) { //clear average level avg128U = _mm_setzero_si128(); ul_ch128=(__m128i *)&ul_ch_estimates_ext[(aatx<<1)+aarx][symbol*nb_rb*12]; for (rb = 0; rb < len/12; rb++) { avg128U = _mm_add_epi32(avg128U, _mm_srai_epi32(_mm_madd_epi16(ul_ch128[0], ul_ch128[0]), x)); avg128U = _mm_add_epi32(avg128U, _mm_srai_epi32(_mm_madd_epi16(ul_ch128[1], ul_ch128[1]), x)); avg128U = _mm_add_epi32(avg128U, _mm_srai_epi32(_mm_madd_epi16(ul_ch128[2], ul_ch128[2]), x)); ul_ch128+=3; } avg[(aatx<<1)+aarx] = (((int32_t*)&avg128U)[0] + ((int32_t*)&avg128U)[1] + ((int32_t*)&avg128U)[2] + ((int32_t*)&avg128U)[3] ) / y; } _mm_empty(); _m_empty(); #elif defined(__arm__) short rb; unsigned char aatx, aarx, nre = 12, symbol_mod; int32x4_t avg128U; int16x4_t *ul_ch128; symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol; for (aatx=0; aatx<frame_parms->nb_antenna_ports_gNB; aatx++) { for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) { //clear average level avg128U = vdupq_n_s32(0); // 5 is always a symbol with no pilots for both normal and extended prefix ul_ch128 = (int16x4_t *)&ul_ch_estimates_ext[(aatx<<1)+aarx][symbol*frame_parms->N_RB_UL*12]; for (rb = 0; rb < nb_rb; rb++) { // printf("rb %d : ",rb); // print_shorts("ch",&ul_ch128[0]); avg128U = vqaddq_s32(avg128U, vmull_s16(ul_ch128[0], ul_ch128[0])); avg128U = vqaddq_s32(avg128U, vmull_s16(ul_ch128[1], ul_ch128[1])); avg128U = vqaddq_s32(avg128U, vmull_s16(ul_ch128[2], ul_ch128[2])); avg128U = vqaddq_s32(avg128U, vmull_s16(ul_ch128[3], ul_ch128[3])); if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_gNB!=1)) { ul_ch128+=4; } else { avg128U = vqaddq_s32(avg128U, vmull_s16(ul_ch128[4], ul_ch128[4])); avg128U = vqaddq_s32(avg128U, vmull_s16(ul_ch128[5], ul_ch128[5])); ul_ch128+=6; } /* if (rb==0) { print_shorts("ul_ch128",&ul_ch128[0]); print_shorts("ul_ch128",&ul_ch128[1]); print_shorts("ul_ch128",&ul_ch128[2]); } */ } if (symbol==2) //assume start symbol 2 nre=6; else nre=12; avg[(aatx<<1)+aarx] = (((int32_t*)&avg128U)[0] + ((int32_t*)&avg128U)[1] + ((int32_t*)&avg128U)[2] + ((int32_t*)&avg128U)[3] ) / (nb_rb*nre); } } #endif } void nr_ulsch_channel_compensation(int **rxdataF_ext, int **ul_ch_estimates_ext, int **ul_ch_mag, int **ul_ch_magb, int **rxdataF_comp, int **rho, NR_DL_FRAME_PARMS *frame_parms, unsigned char symbol, uint8_t is_dmrs_symbol, unsigned char mod_order, unsigned short nb_rb, unsigned char output_shift) { #ifdef DEBUG_CH_COMP int16_t *rxF, *ul_ch; int prnt_idx; rxF = (int16_t *)&rxdataF_ext[0][(symbol*nb_rb*12)]; ul_ch = (int16_t *)&ul_ch_estimates_ext[0][symbol*nb_rb*12]; printf("--------------------symbol = %d, mod_order = %d, output_shift = %d-----------------------\n", symbol, mod_order, output_shift); printf("----------------Before compensation------------------\n"); for (prnt_idx=0;prnt_idx<12*nb_rb*2;prnt_idx+=2){ printf("rxF[%d] = (%d,%d)\n", prnt_idx>>1, rxF[prnt_idx],rxF[prnt_idx+1]); printf("ul_ch[%d] = (%d,%d)\n", prnt_idx>>1, ul_ch[prnt_idx],ul_ch[prnt_idx+1]); } #endif #ifdef DEBUG_CH_MAG int16_t *ch_mag; int print_idx; ch_mag = (int16_t *)&ul_ch_mag[0][(symbol*nb_rb*12)]; printf("--------------------symbol = %d, mod_order = %d-----------------------\n", symbol, mod_order); printf("----------------Before computation------------------\n"); for (print_idx=0;print_idx<50;print_idx++){ printf("ch_mag[%d] = %d\n", print_idx, ch_mag[print_idx]); } #endif #if defined(__i386) || defined(__x86_64) unsigned short rb; unsigned char aatx,aarx; __m128i *ul_ch128,*ul_ch128_2,*ul_ch_mag128,*ul_ch_mag128b,*rxdataF128,*rxdataF_comp128,*rho128; __m128i mmtmpD0,mmtmpD1,mmtmpD2,mmtmpD3,QAM_amp128,QAM_amp128b; QAM_amp128b = _mm_setzero_si128(); for (aatx=0; aatx<frame_parms->nb_antennas_tx; aatx++) { if (mod_order == 4) { QAM_amp128 = _mm_set1_epi16(QAM16_n1); // 2/sqrt(10) QAM_amp128b = _mm_setzero_si128(); } else if (mod_order == 6) { QAM_amp128 = _mm_set1_epi16(QAM64_n1); // QAM_amp128b = _mm_set1_epi16(QAM64_n2); } // printf("comp: rxdataF_comp %p, symbol %d\n",rxdataF_comp[0],symbol); for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) { ul_ch128 = (__m128i *)&ul_ch_estimates_ext[(aatx<<1)+aarx][symbol*nb_rb*12]; ul_ch_mag128 = (__m128i *)&ul_ch_mag[(aatx<<1)+aarx][symbol*nb_rb*12]; ul_ch_mag128b = (__m128i *)&ul_ch_magb[(aatx<<1)+aarx][symbol*nb_rb*12]; rxdataF128 = (__m128i *)&rxdataF_ext[aarx][symbol*nb_rb*12]; rxdataF_comp128 = (__m128i *)&rxdataF_comp[(aatx<<1)+aarx][symbol*nb_rb*12]; for (rb=0; rb<nb_rb; rb++) { if (mod_order>2) { // get channel amplitude if not QPSK //print_shorts("ch:",(int16_t*)&ul_ch128[0]); mmtmpD0 = _mm_madd_epi16(ul_ch128[0],ul_ch128[0]); mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift); mmtmpD1 = _mm_madd_epi16(ul_ch128[1],ul_ch128[1]); mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift); mmtmpD0 = _mm_packs_epi32(mmtmpD0,mmtmpD1); // store channel magnitude here in a new field of ulsch ul_ch_mag128[0] = _mm_unpacklo_epi16(mmtmpD0,mmtmpD0); ul_ch_mag128b[0] = ul_ch_mag128[0]; ul_ch_mag128[0] = _mm_mulhi_epi16(ul_ch_mag128[0],QAM_amp128); ul_ch_mag128[0] = _mm_slli_epi16(ul_ch_mag128[0],1); // print_ints("ch: = ",(int32_t*)&mmtmpD0); // print_shorts("QAM_amp:",(int16_t*)&QAM_amp128); // print_shorts("mag:",(int16_t*)&ul_ch_mag128[0]); ul_ch_mag128[1] = _mm_unpackhi_epi16(mmtmpD0,mmtmpD0); ul_ch_mag128b[1] = ul_ch_mag128[1]; ul_ch_mag128[1] = _mm_mulhi_epi16(ul_ch_mag128[1],QAM_amp128); ul_ch_mag128[1] = _mm_slli_epi16(ul_ch_mag128[1],1); if (is_dmrs_symbol==0) { mmtmpD0 = _mm_madd_epi16(ul_ch128[2],ul_ch128[2]); mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift); mmtmpD1 = _mm_packs_epi32(mmtmpD0,mmtmpD0); ul_ch_mag128[2] = _mm_unpacklo_epi16(mmtmpD1,mmtmpD1); ul_ch_mag128b[2] = ul_ch_mag128[2]; ul_ch_mag128[2] = _mm_mulhi_epi16(ul_ch_mag128[2],QAM_amp128); ul_ch_mag128[2] = _mm_slli_epi16(ul_ch_mag128[2],1); } ul_ch_mag128b[0] = _mm_mulhi_epi16(ul_ch_mag128b[0],QAM_amp128b); ul_ch_mag128b[0] = _mm_slli_epi16(ul_ch_mag128b[0],1); ul_ch_mag128b[1] = _mm_mulhi_epi16(ul_ch_mag128b[1],QAM_amp128b); ul_ch_mag128b[1] = _mm_slli_epi16(ul_ch_mag128b[1],1); if (is_dmrs_symbol==0) { ul_ch_mag128b[2] = _mm_mulhi_epi16(ul_ch_mag128b[2],QAM_amp128b); ul_ch_mag128b[2] = _mm_slli_epi16(ul_ch_mag128b[2],1); } } // multiply by conjugated channel mmtmpD0 = _mm_madd_epi16(ul_ch128[0],rxdataF128[0]); // print_ints("re",&mmtmpD0); // mmtmpD0 contains real part of 4 consecutive outputs (32-bit) mmtmpD1 = _mm_shufflelo_epi16(ul_ch128[0],_MM_SHUFFLE(2,3,0,1)); mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1)); mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)&conjugate[0]); // print_ints("im",&mmtmpD1); mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[0]); // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit) mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift); // print_ints("re(shift)",&mmtmpD0); mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift); // print_ints("im(shift)",&mmtmpD1); mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1); mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1); // print_ints("c0",&mmtmpD2); // print_ints("c1",&mmtmpD3); rxdataF_comp128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3); // print_shorts("rx:",rxdataF128); // print_shorts("ch:",ul_ch128); // print_shorts("pack:",rxdataF_comp128); // multiply by conjugated channel mmtmpD0 = _mm_madd_epi16(ul_ch128[1],rxdataF128[1]); // mmtmpD0 contains real part of 4 consecutive outputs (32-bit) mmtmpD1 = _mm_shufflelo_epi16(ul_ch128[1],_MM_SHUFFLE(2,3,0,1)); mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1)); mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate); mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[1]); // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit) mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift); mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift); mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1); mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1); rxdataF_comp128[1] = _mm_packs_epi32(mmtmpD2,mmtmpD3); // print_shorts("rx:",rxdataF128+1); // print_shorts("ch:",ul_ch128+1); // print_shorts("pack:",rxdataF_comp128+1); if (is_dmrs_symbol==0) { // multiply by conjugated channel mmtmpD0 = _mm_madd_epi16(ul_ch128[2],rxdataF128[2]); // mmtmpD0 contains real part of 4 consecutive outputs (32-bit) mmtmpD1 = _mm_shufflelo_epi16(ul_ch128[2],_MM_SHUFFLE(2,3,0,1)); mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1)); mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate); mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[2]); // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit) mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift); mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift); mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1); mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1); rxdataF_comp128[2] = _mm_packs_epi32(mmtmpD2,mmtmpD3); // print_shorts("rx:",rxdataF128+2); // print_shorts("ch:",ul_ch128+2); // print_shorts("pack:",rxdataF_comp128+2); ul_ch128+=3; ul_ch_mag128+=3; ul_ch_mag128b+=3; rxdataF128+=3; rxdataF_comp128+=3; } else { // we have a smaller PUSCH in symbols with pilots so skip last group of 4 REs and increment less ul_ch128+=2; ul_ch_mag128+=2; ul_ch_mag128b+=2; rxdataF128+=2; rxdataF_comp128+=2; } } } } if (rho) { for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) { rho128 = (__m128i *)&rho[aarx][symbol*frame_parms->N_RB_UL*12]; ul_ch128 = (__m128i *)&ul_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_UL*12]; ul_ch128_2 = (__m128i *)&ul_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_UL*12]; for (rb=0; rb<nb_rb; rb++) { // multiply by conjugated channel mmtmpD0 = _mm_madd_epi16(ul_ch128[0],ul_ch128_2[0]); // print_ints("re",&mmtmpD0); // mmtmpD0 contains real part of 4 consecutive outputs (32-bit) mmtmpD1 = _mm_shufflelo_epi16(ul_ch128[0],_MM_SHUFFLE(2,3,0,1)); mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1)); mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)&conjugate[0]); // print_ints("im",&mmtmpD1); mmtmpD1 = _mm_madd_epi16(mmtmpD1,ul_ch128_2[0]); // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit) mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift); // print_ints("re(shift)",&mmtmpD0); mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift); // print_ints("im(shift)",&mmtmpD1); mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1); mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1); // print_ints("c0",&mmtmpD2); // print_ints("c1",&mmtmpD3); rho128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3); //print_shorts("rx:",ul_ch128_2); //print_shorts("ch:",ul_ch128); //print_shorts("pack:",rho128); // multiply by conjugated channel mmtmpD0 = _mm_madd_epi16(ul_ch128[1],ul_ch128_2[1]); // mmtmpD0 contains real part of 4 consecutive outputs (32-bit) mmtmpD1 = _mm_shufflelo_epi16(ul_ch128[1],_MM_SHUFFLE(2,3,0,1)); mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1)); mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate); mmtmpD1 = _mm_madd_epi16(mmtmpD1,ul_ch128_2[1]); // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit) mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift); mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift); mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1); mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1); rho128[1] =_mm_packs_epi32(mmtmpD2,mmtmpD3); //print_shorts("rx:",ul_ch128_2+1); //print_shorts("ch:",ul_ch128+1); //print_shorts("pack:",rho128+1); // multiply by conjugated channel mmtmpD0 = _mm_madd_epi16(ul_ch128[2],ul_ch128_2[2]); // mmtmpD0 contains real part of 4 consecutive outputs (32-bit) mmtmpD1 = _mm_shufflelo_epi16(ul_ch128[2],_MM_SHUFFLE(2,3,0,1)); mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1)); mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate); mmtmpD1 = _mm_madd_epi16(mmtmpD1,ul_ch128_2[2]); // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit) mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift); mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift); mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1); mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1); rho128[2] = _mm_packs_epi32(mmtmpD2,mmtmpD3); //print_shorts("rx:",ul_ch128_2+2); //print_shorts("ch:",ul_ch128+2); //print_shorts("pack:",rho128+2); ul_ch128+=3; ul_ch128_2+=3; rho128+=3; } } } _mm_empty(); _m_empty(); #elif defined(__arm__) unsigned short rb; unsigned char aatx,aarx,symbol_mod,is_dmrs_symbol=0; int16x4_t *ul_ch128,*ul_ch128_2,*rxdataF128; int32x4_t mmtmpD0,mmtmpD1,mmtmpD0b,mmtmpD1b; int16x8_t *ul_ch_mag128,*ul_ch_mag128b,mmtmpD2,mmtmpD3,mmtmpD4; int16x8_t QAM_amp128,QAM_amp128b; int16x4x2_t *rxdataF_comp128,*rho128; int16_t conj[4]__attribute__((aligned(16))) = {1,-1,1,-1}; int32x4_t output_shift128 = vmovq_n_s32(-(int32_t)output_shift); symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol; if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp))) { if (frame_parms->nb_antenna_ports_gNB==1) { // 10 out of 12 so don't reduce size nb_rb=1+(5*nb_rb/6); } else { is_dmrs_symbol=1; } } for (aatx=0; aatx<frame_parms->nb_antenna_ports_gNB; aatx++) { if (mod_order == 4) { QAM_amp128 = vmovq_n_s16(QAM16_n1); // 2/sqrt(10) QAM_amp128b = vmovq_n_s16(0); } else if (mod_order == 6) { QAM_amp128 = vmovq_n_s16(QAM64_n1); // QAM_amp128b = vmovq_n_s16(QAM64_n2); } // printf("comp: rxdataF_comp %p, symbol %d\n",rxdataF_comp[0],symbol); for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) { ul_ch128 = (int16x4_t*)&ul_ch_estimates_ext[(aatx<<1)+aarx][symbol*frame_parms->N_RB_UL*12]; ul_ch_mag128 = (int16x8_t*)&ul_ch_mag[(aatx<<1)+aarx][symbol*frame_parms->N_RB_UL*12]; ul_ch_mag128b = (int16x8_t*)&ul_ch_magb[(aatx<<1)+aarx][symbol*frame_parms->N_RB_UL*12]; rxdataF128 = (int16x4_t*)&rxdataF_ext[aarx][symbol*frame_parms->N_RB_UL*12]; rxdataF_comp128 = (int16x4x2_t*)&rxdataF_comp[(aatx<<1)+aarx][symbol*frame_parms->N_RB_UL*12]; for (rb=0; rb<nb_rb; rb++) { if (mod_order>2) { // get channel amplitude if not QPSK mmtmpD0 = vmull_s16(ul_ch128[0], ul_ch128[0]); // mmtmpD0 = [ch0*ch0,ch1*ch1,ch2*ch2,ch3*ch3]; mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128); // mmtmpD0 = [ch0*ch0 + ch1*ch1,ch0*ch0 + ch1*ch1,ch2*ch2 + ch3*ch3,ch2*ch2 + ch3*ch3]>>output_shift128 on 32-bits mmtmpD1 = vmull_s16(ul_ch128[1], ul_ch128[1]); mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128); mmtmpD2 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1)); // mmtmpD2 = [ch0*ch0 + ch1*ch1,ch0*ch0 + ch1*ch1,ch2*ch2 + ch3*ch3,ch2*ch2 + ch3*ch3,ch4*ch4 + ch5*ch5,ch4*ch4 + ch5*ch5,ch6*ch6 + ch7*ch7,ch6*ch6 + ch7*ch7]>>output_shift128 on 16-bits mmtmpD0 = vmull_s16(ul_ch128[2], ul_ch128[2]); mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128); mmtmpD1 = vmull_s16(ul_ch128[3], ul_ch128[3]); mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128); mmtmpD3 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1)); if (is_dmrs_symbol==0) { mmtmpD0 = vmull_s16(ul_ch128[4], ul_ch128[4]); mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128); mmtmpD1 = vmull_s16(ul_ch128[5], ul_ch128[5]); mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128); mmtmpD4 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1)); } ul_ch_mag128b[0] = vqdmulhq_s16(mmtmpD2,QAM_amp128b); ul_ch_mag128b[1] = vqdmulhq_s16(mmtmpD3,QAM_amp128b); ul_ch_mag128[0] = vqdmulhq_s16(mmtmpD2,QAM_amp128); ul_ch_mag128[1] = vqdmulhq_s16(mmtmpD3,QAM_amp128); if (is_dmrs_symbol==0) { ul_ch_mag128b[2] = vqdmulhq_s16(mmtmpD4,QAM_amp128b); ul_ch_mag128[2] = vqdmulhq_s16(mmtmpD4,QAM_amp128); } } mmtmpD0 = vmull_s16(ul_ch128[0], rxdataF128[0]); //mmtmpD0 = [Re(ch[0])Re(rx[0]) Im(ch[0])Im(ch[0]) Re(ch[1])Re(rx[1]) Im(ch[1])Im(ch[1])] mmtmpD1 = vmull_s16(ul_ch128[1], rxdataF128[1]); //mmtmpD1 = [Re(ch[2])Re(rx[2]) Im(ch[2])Im(ch[2]) Re(ch[3])Re(rx[3]) Im(ch[3])Im(ch[3])] mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)), vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1))); //mmtmpD0 = [Re(ch[0])Re(rx[0])+Im(ch[0])Im(ch[0]) Re(ch[1])Re(rx[1])+Im(ch[1])Im(ch[1]) Re(ch[2])Re(rx[2])+Im(ch[2])Im(ch[2]) Re(ch[3])Re(rx[3])+Im(ch[3])Im(ch[3])] mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(ul_ch128[0],*(int16x4_t*)conj)), rxdataF128[0]); //mmtmpD0 = [-Im(ch[0])Re(rx[0]) Re(ch[0])Im(rx[0]) -Im(ch[1])Re(rx[1]) Re(ch[1])Im(rx[1])] mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(ul_ch128[1],*(int16x4_t*)conj)), rxdataF128[1]); //mmtmpD0 = [-Im(ch[2])Re(rx[2]) Re(ch[2])Im(rx[2]) -Im(ch[3])Re(rx[3]) Re(ch[3])Im(rx[3])] mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)), vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b))); //mmtmpD1 = [-Im(ch[0])Re(rx[0])+Re(ch[0])Im(rx[0]) -Im(ch[1])Re(rx[1])+Re(ch[1])Im(rx[1]) -Im(ch[2])Re(rx[2])+Re(ch[2])Im(rx[2]) -Im(ch[3])Re(rx[3])+Re(ch[3])Im(rx[3])] mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128); mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128); rxdataF_comp128[0] = vzip_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1)); mmtmpD0 = vmull_s16(ul_ch128[2], rxdataF128[2]); mmtmpD1 = vmull_s16(ul_ch128[3], rxdataF128[3]); mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)), vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1))); mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(ul_ch128[2],*(int16x4_t*)conj)), rxdataF128[2]); mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(ul_ch128[3],*(int16x4_t*)conj)), rxdataF128[3]); mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)), vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b))); mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128); mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128); rxdataF_comp128[1] = vzip_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1)); if (is_dmrs_symbol==0) { mmtmpD0 = vmull_s16(ul_ch128[4], rxdataF128[4]); mmtmpD1 = vmull_s16(ul_ch128[5], rxdataF128[5]); mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)), vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1))); mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(ul_ch128[4],*(int16x4_t*)conj)), rxdataF128[4]); mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(ul_ch128[5],*(int16x4_t*)conj)), rxdataF128[5]); mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)), vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b))); mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128); mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128); rxdataF_comp128[2] = vzip_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1)); ul_ch128+=6; ul_ch_mag128+=3; ul_ch_mag128b+=3; rxdataF128+=6; rxdataF_comp128+=3; } else { // we have a smaller PUSCH in symbols with pilots so skip last group of 4 REs and increment less ul_ch128+=4; ul_ch_mag128+=2; ul_ch_mag128b+=2; rxdataF128+=4; rxdataF_comp128+=2; } } } } if (rho) { for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) { rho128 = (int16x4x2_t*)&rho[aarx][symbol*frame_parms->N_RB_UL*12]; ul_ch128 = (int16x4_t*)&ul_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_UL*12]; ul_ch128_2 = (int16x4_t*)&ul_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_UL*12]; for (rb=0; rb<nb_rb; rb++) { mmtmpD0 = vmull_s16(ul_ch128[0], ul_ch128_2[0]); mmtmpD1 = vmull_s16(ul_ch128[1], ul_ch128_2[1]); mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)), vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1))); mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(ul_ch128[0],*(int16x4_t*)conj)), ul_ch128_2[0]); mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(ul_ch128[1],*(int16x4_t*)conj)), ul_ch128_2[1]); mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)), vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b))); mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128); mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128); rho128[0] = vzip_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1)); mmtmpD0 = vmull_s16(ul_ch128[2], ul_ch128_2[2]); mmtmpD1 = vmull_s16(ul_ch128[3], ul_ch128_2[3]); mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)), vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1))); mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(ul_ch128[2],*(int16x4_t*)conj)), ul_ch128_2[2]); mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(ul_ch128[3],*(int16x4_t*)conj)), ul_ch128_2[3]); mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)), vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b))); mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128); mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128); rho128[1] = vzip_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1)); mmtmpD0 = vmull_s16(ul_ch128[0], ul_ch128_2[0]); mmtmpD1 = vmull_s16(ul_ch128[1], ul_ch128_2[1]); mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)), vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1))); mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(ul_ch128[4],*(int16x4_t*)conj)), ul_ch128_2[4]); mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(ul_ch128[5],*(int16x4_t*)conj)), ul_ch128_2[5]); mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)), vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b))); mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128); mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128); rho128[2] = vzip_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1)); ul_ch128+=6; ul_ch128_2+=6; rho128+=3; } } } #endif #ifdef DEBUG_CH_COMP rxF = (int16_t *)&rxdataF_comp[0][(symbol*nb_rb*12)]; printf("----------------After compansation------------------\n"); for (prnt_idx=0;prnt_idx<12*nb_rb*2;prnt_idx+=2){ printf("rxF[%d] = (%d,%d)\n", prnt_idx>>1, rxF[prnt_idx],rxF[prnt_idx+1]); } #endif #ifdef DEBUG_CH_MAG ch_mag = (int16_t *)&ul_ch_mag[0][(symbol*nb_rb*12)]; printf("----------------After computation------------------\n"); for (print_idx=0;print_idx<12*nb_rb*2;print_idx+=2){ printf("ch_mag[%d] = (%d,%d)\n", print_idx>>1, ch_mag[print_idx],ch_mag[print_idx+1]); } #endif } int nr_rx_pusch(PHY_VARS_gNB *gNB, uint8_t ulsch_id, uint32_t frame, uint8_t nr_tti_rx, unsigned char symbol, unsigned char harq_pid) { uint8_t aarx, aatx, dmrs_symbol_flag, ptrs_symbol_flag; // dmrs_symbol_flag, a flag to indicate DMRS REs in current symbol uint32_t nb_re_pusch, bwp_start_subcarrier; uint8_t L_ptrs = 0; // PTRS parameter int avgs; int avg[4]; NR_DL_FRAME_PARMS *frame_parms = &gNB->frame_parms; nfapi_nr_pusch_pdu_t *rel15_ul = &gNB->ulsch[ulsch_id][0]->harq_processes[harq_pid]->ulsch_pdu; uint8_t nodata_dmrs = 1; // FIXME to be properly configured from fapi dmrs_symbol_flag = 0; ptrs_symbol_flag = 0; gNB->pusch_vars[ulsch_id]->ptrs_sc_per_ofdm_symbol = 0; if(symbol == rel15_ul->start_symbol_index){ gNB->pusch_vars[ulsch_id]->rxdataF_ext_offset = 0; gNB->pusch_vars[ulsch_id]->dmrs_symbol = 0; gNB->pusch_vars[ulsch_id]->cl_done = 0; gNB->pusch_vars[ulsch_id]->ptrs_symbols = 0; if ( ((rel15_ul->pdu_bit_map)>>2)& 0x01 ) { // if there is ptrs pdu L_ptrs = 1<<(rel15_ul->pusch_ptrs.ptrs_time_density); set_ptrs_symb_idx(&gNB->pusch_vars[ulsch_id]->ptrs_symbols, rel15_ul->nr_of_symbols, rel15_ul->start_symbol_index, rel15_ul->dmrs_config_type, L_ptrs, 1, // only dmrs of length 1 is currently supported frame_parms->ofdm_symbol_size); } } bwp_start_subcarrier = (rel15_ul->rb_start*NR_NB_SC_PER_RB + frame_parms->first_carrier_offset) % frame_parms->ofdm_symbol_size; dmrs_symbol_flag = ((rel15_ul->ul_dmrs_symb_pos)>>symbol)&0x01; if (dmrs_symbol_flag == 1){ if (((rel15_ul->ul_dmrs_symb_pos)>>((symbol+1)%frame_parms->symbols_per_slot))&0x01) AssertFatal(1==0,"Double DMRS configuration is not yet supported\n"); if (nodata_dmrs) nb_re_pusch = 0; else nb_re_pusch = rel15_ul->rb_size * ((rel15_ul->dmrs_config_type==pusch_dmrs_type1)?6:8); gNB->pusch_vars[ulsch_id]->dmrs_symbol = symbol; } else { nb_re_pusch = rel15_ul->rb_size * NR_NB_SC_PER_RB; } if ( ((rel15_ul->pdu_bit_map)>>2)& 0x01 ) { // if there is ptrs pdu ptrs_symbol_flag = is_ptrs_symbol(symbol, 0, rel15_ul->rnti, rel15_ul->rb_size, rel15_ul->nr_of_symbols, 0, (rel15_ul->pusch_ptrs.ptrs_freq_density)?4:2, gNB->pusch_vars[ulsch_id]->ptrs_symbols, 0, frame_parms->ofdm_symbol_size, rel15_ul->dmrs_config_type, rel15_ul->pusch_ptrs.ptrs_ports_list[0].ptrs_re_offset); } if (ptrs_symbol_flag == 1){ gNB->pusch_vars[ulsch_id]->ptrs_symbol_index = symbol; } //---------------------------------------------------------- //--------------------- Channel estimation --------------------- //---------------------------------------------------------- start_meas(&gNB->ulsch_channel_estimation_stats); if (dmrs_symbol_flag == 1) nr_pusch_channel_estimation(gNB, nr_tti_rx, 0, // p symbol, bwp_start_subcarrier, rel15_ul); stop_meas(&gNB->ulsch_channel_estimation_stats); //---------------------------------------------------------- //--------------------- RBs extraction --------------------- //---------------------------------------------------------- if (nb_re_pusch > 0) { start_meas(&gNB->ulsch_rbs_extraction_stats); nr_ulsch_extract_rbs_single(gNB->common_vars.rxdataF, gNB->pusch_vars[ulsch_id], symbol, dmrs_symbol_flag, rel15_ul, frame_parms); stop_meas(&gNB->ulsch_rbs_extraction_stats); nr_ulsch_scale_channel(gNB->pusch_vars[ulsch_id]->ul_ch_estimates_ext, frame_parms, gNB->ulsch[ulsch_id], symbol, dmrs_symbol_flag, rel15_ul->rb_size, rel15_ul->dmrs_config_type); if (gNB->pusch_vars[ulsch_id]->cl_done==0) { nr_ulsch_channel_level(gNB->pusch_vars[ulsch_id]->ul_ch_estimates_ext, frame_parms, avg, symbol, nb_re_pusch, rel15_ul->rb_size); avgs = 0; for (aatx=0;aatx<frame_parms->nb_antennas_tx;aatx++) for (aarx=0;aarx<frame_parms->nb_antennas_rx;aarx++) avgs = cmax(avgs,avg[(aatx<<1)+aarx]); gNB->pusch_vars[ulsch_id]->log2_maxh = (log2_approx(avgs)/2)+1; gNB->pusch_vars[ulsch_id]->cl_done = 1; } start_meas(&gNB->ulsch_channel_compensation_stats); nr_ulsch_channel_compensation(gNB->pusch_vars[ulsch_id]->rxdataF_ext, gNB->pusch_vars[ulsch_id]->ul_ch_estimates_ext, gNB->pusch_vars[ulsch_id]->ul_ch_mag0, gNB->pusch_vars[ulsch_id]->ul_ch_magb0, gNB->pusch_vars[ulsch_id]->rxdataF_comp, (frame_parms->nb_antennas_tx>1) ? gNB->pusch_vars[ulsch_id]->rho : NULL, frame_parms, symbol, dmrs_symbol_flag, rel15_ul->qam_mod_order, rel15_ul->rb_size, gNB->pusch_vars[ulsch_id]->log2_maxh); stop_meas(&gNB->ulsch_channel_compensation_stats); int rxsig = signal_energy(&gNB->pusch_vars[ulsch_id]->rxdataF_comp[0][(symbol*rel15_ul->rb_size*12)], rel15_ul->rb_size*12); if (rxsig==1) return (rxsig); #ifdef NR_SC_FDMA nr_idft(&((uint32_t*)gNB->pusch_vars[ulsch_id]->rxdataF_ext[0])[symbol * rel15_ul->rb_size * NR_NB_SC_PER_RB], nb_re_pusch); #endif //---------------------------------------------------------- //-------------------- LLRs computation -------------------- //---------------------------------------------------------- start_meas(&gNB->ulsch_llr_stats); nr_ulsch_compute_llr(&gNB->pusch_vars[ulsch_id]->rxdataF_comp[0][symbol * rel15_ul->rb_size * NR_NB_SC_PER_RB], gNB->pusch_vars[ulsch_id]->ul_ch_mag0, gNB->pusch_vars[ulsch_id]->ul_ch_magb0, &gNB->pusch_vars[ulsch_id]->llr[gNB->pusch_vars[ulsch_id]->rxdataF_ext_offset * rel15_ul->qam_mod_order], rel15_ul->rb_size, nb_re_pusch, symbol, rel15_ul->qam_mod_order); stop_meas(&gNB->ulsch_llr_stats); } gNB->pusch_vars[ulsch_id]->rxdataF_ext_offset = gNB->pusch_vars[ulsch_id]->rxdataF_ext_offset + nb_re_pusch; return (0); }