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added n1L1_stats.log. improvements to noise level (PUCCH/PUSCH) and signal level (PUCCH) computations. added DTX detection parameters for PUCCH/PUSCH/PRACH in L1 section of configuration file. hotfix from C. Roux for SRB PDCP integrity. extra logging to debug missing PUSCH/DCI at UE.

This commit contains work done by Eurecom and by Benetel.

NR PHY should now be able to handle multiple PRACH occasions

added FAPI interfaces int gNB prach receiver functions (rx_nr_prach,rx_nr_prach_ru) and in indication to MAC.

removal of several warnings. Still lots left. dlsim functional after some recent modifications broke it. New memory leak in dlsch decoding for low mcs high TBS fixed.

Khalid Ahmed authored Sep 23, 2019 and Thomas Schlichter committed Dec 18, 2019

- nr_ulsim supports multiple DMRS configurations

Ahmed Hussein authored May 27, 2019 and Thomas Schlichter committed Oct 08, 2019

Added the following folder:
- ../openair1/PHY/NR_ESTIMATION/

Added the following file to CMakelists.txt:
- ../openair1/PHY/NR_ESTIMATION/nr_ul_channel_estimation.c

Added the following functions:
- nr_pusch_dmrs_rx
- nr_gold_pusch
- nr_ulsch_channel_level
- nr_ulsch_channel_compensation
- nr_ulsch_scale_channel is commented out (I think only used for downlink)

Changes from Khalid Ahmed Mahmoud Mohamed:
- nr_pusch_channel_estimation is used
- nr_ulsch_scale_channel is used
- nr_ulsch_channel_level is used
- nr_ulsch_channel_compensation is used
- multiple logging options for channel and signal magnitude