mirror of https://github.com/PentHertz/srsLTE.git
nr,gnb: fix abs freq ssb arfcn derivation
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@ -142,10 +142,11 @@ uint32_t srsran_band_helper::find_lower_bound_abs_freq_ssb(uint16_t
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return 0;
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}
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double ssb_bw_hz = SRSRAN_SSB_BW_SUBC * SRSRAN_SUBC_SPACING_NR(scs);
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while (!sync_raster.end()) {
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double abs_freq_ssb_hz = sync_raster.get_frequency();
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if ((abs_freq_ssb_hz > min_center_freq_hz) and
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if ((abs_freq_ssb_hz > min_center_freq_hz + ssb_bw_hz / 2) and
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((uint32_t)std::round(abs_freq_ssb_hz - min_center_freq_hz) % SRSRAN_SUBC_SPACING_NR(scs) == 0)) {
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return freq_to_nr_arfcn(abs_freq_ssb_hz);
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}
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@ -161,9 +162,8 @@ uint32_t srsran_band_helper::get_abs_freq_ssb_arfcn(uint16_t
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uint32_t coreset0_offset_rb)
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{
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double freq_point_a_hz = nr_arfcn_to_freq(freq_point_a_arfcn);
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double ssb_bw_hz = SRSRAN_SSB_BW_SUBC * SRSRAN_SUBC_SPACING_NR(scs);
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double coreset0_offset_hz = coreset0_offset_rb * SRSRAN_NRE * SRSRAN_SUBC_SPACING_NR(scs);
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return find_lower_bound_abs_freq_ssb(band, scs, freq_point_a_hz + coreset0_offset_hz + ssb_bw_hz / 2);
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return find_lower_bound_abs_freq_ssb(band, scs, freq_point_a_hz + coreset0_offset_hz);
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}
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srsran_ssb_patern_t srsran_band_helper::get_ssb_pattern(uint16_t band, srsran_subcarrier_spacing_t scs) const
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