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Revert "Modify PUSCH power normalization" 

This reverts commit a4b86e5a0a
which causes low UL throughput against Amarisoft (max MCS not achieved over RF).
See issue #3723.

We need to investigate this again and revert the revert.
This commit is contained in:
Andre Puschmann 2021-12-08 17:27:24 +01:00
parent 57fc2470ad
commit fee0351dd3
1 changed files with 6 additions and 3 deletions
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9
lib/src/phy/ue/ue_ul_nr.c
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@ -133,9 +133,12 @@ int srsran_ue_ul_nr_encode_pusch(srsran_ue_ul_nr_t* q,
// Generate signal
srsran_ofdm_tx_sf(&q->ifft);
// Scale iFFT output to compensate for iFFT amplification (due to FFTW implementation).
float scaling = 1 / sqrtf(q->ifft.cfg.symbol_sz);
srsran_vec_sc_prod_cfc(q->ifft.cfg.out_buffer, scaling, q->ifft.cfg.out_buffer, q->ifft.sf_sz);
// Normalise to peak
uint32_t max_idx = srsran_vec_max_abs_ci(q->ifft.cfg.out_buffer, q->ifft.sf_sz);
float max_peak = cabsf(q->ifft.cfg.out_buffer[max_idx]);
if (isnormal(max_peak)) {
srsran_vec_sc_prod_cfc(q->ifft.cfg.out_buffer, 0.99f / max_peak, q->ifft.cfg.out_buffer, q->ifft.sf_sz);
}
// Apply frequency offset
if (isnormal(q->freq_offset_hz)) {