- this was necessary because as soon as the gNB starts, it tries detecting
the prach preambles and it mesaures the background noise. However, there is
a delay of several dozens of frames before it considers the preables as
detected.
- the solution at the UE consists in avoiding sending preamble as soon as the
UE syncs by introducing an offset, this keeps the power measurements low at
gNB side as long as the preamble detection counter is under threshold
- using nr_extract_dci_info instead of nr_generate_ue_ul_dlsch_params_from_dci as in phy_procedures_nr_ue. The latter was only a (poor) wrapper and not doing what the name suggests. also with FAPI things have to be done differently now. This will come in a next commit.
- other minor changes to remove warning
prepreatory changes
0. unwiring of 40 MHz channel hard-coding and general SSB location
1. PSS dynamic range improvement and DC carrier fix
2. SSS channel estimation and detection corrected
3. PBCH channel estimation fixed
4. PBCH channel extraction/compensation reworked for the general case
5. fixed-point low-complexity polar decoder integrated to PBCH decoding chain
works by default (nr_pbchsim) at 100 MHz / 30 kHz SCS and SSB wherever (but known to UE)
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