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Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

- the issue popped up with the new rx/tx implementation  at the UE
- this was causing false processing of DLSCH PDU and reception of false
  TA commands

- NR UE scheduled response for RA PDSCH case
- UE processing of RAR DCI
- some cleanup and formatting

Guido Casati authored Apr 13, 2020 and Thomas Schlichter committed Apr 14, 2020

- 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 ul_dmrs_symb_pos at UE side instead of assuming that DMRS is only present at 1st symbol of PUSCH

- now the FAPI interface copies the struct directly to NR_UE_PRACH
- NR_PRACH_CONFIG_COMMON and NR_PRACH_CONFIG_INFO have been removed from FP

- ULSCH is temporary disabled

Guido Casati authored Feb 20, 2020 and Thomas Schlichter committed Feb 27, 2020

- takes in input configuration index and TS 38.211 PRACH tables (6.3.3.2.x)
- using FAPI NR UL config request struct, derived from SCF standard for gNB

added longer prefix in PRACH symbol zero period for 15/30 kHz SCS. Both gNB and UE processing is modified. prachsim is functional again with new FAPI interfaces.

ENABLE_ITTI macro removal, modified telnet server to support all executables, modified record player to finalize switch to run-time option and allow usage with any device