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improvements for 4-layer MIMO at gNB

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francescomani
2024-03-21 18:22:25 +01:00
parent c16bde2928
commit 8f858af876
16 changed files with 375 additions and 218 deletions
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common/utils/nr/nr_common.c
+3 -5
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@@ -85,11 +85,9 @@ static const int tables_5_3_2[5][12] = {
{32, 66, 132, 264, -1, -1, -1, -1, -1, -1, -1, -1} // 120FR2
};
int get_supported_band_index(int scs, int band, int n_rbs)
int get_supported_band_index(int scs, frequency_range_t freq_range, int n_rbs)
{
int scs_index = scs;
if (band > 256)
scs_index++;
int scs_index = scs + freq_range;
for (int i = 0; i < 12; i++) {
if(n_rbs == tables_5_3_2[scs_index][i])
return i;
@@ -224,7 +222,7 @@ bool compare_relative_ul_channel_bw(int nr_band, int scs, int nb_ul, frame_type_
// 38.101-1 section 6.2.2
// Relative channel bandwidth <= 4% for TDD bands and <= 3% for FDD bands
int index = get_nr_table_idx(nr_band, scs);
int bw_index = get_supported_band_index(scs, nr_band, nb_ul);
int bw_index = get_supported_band_index(scs, nr_band > 256 ? FR2 : FR1, nb_ul);
int band_size_khz = get_supported_bw_mhz(nr_band > 256 ? FR2 : FR1, bw_index) * 1000;
float limit = frame_type == TDD ? 0.04 : 0.03;
float rel_bw = (float) (2 * band_size_khz) / (float) (nr_bandtable[index].ul_max + nr_bandtable[index].ul_min);